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Technical service bulletins and software campaigns

Every bulletin, campaign and named dealer fix we have found, with its number where one is known. Owner reports with a link to each source — not MG statements, and not advice.

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Technical service bulletins and software campaigns

Every bulletin, campaign and named dealer fix we have found, with its number where one is known

Gathered from owners who were shown a bulletin, dealers who quoted a number, and regulator notices. Where a number is known it is in the entry. Ask for a fix by its number: a dealer can look up a bulletin they have never heard of, and cannot look up a description.

Scope. Bulletins and campaigns are issued per market. A UK or EU campaign number is not an Australian one; the market tag on each entry says which.

76 reports · 40 safety-related

Reports

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Recalls & campaigns 12

918
No MG4 recall exists on the Australian register — MG3, ZS, HS and MG6 are on it, the MG4 is not

Australia's national vehicle recall register lists five SAIC Motor Australia recalls — MG3 (Nov 2025), MG HS PHEV and HS +EV (May 2023), MG3 (Jun 2021), ZS (Nov 2018) and MG6 (Aug 2018) — and no MG4 of any variant. Searching the register for the supplier rather than the model returns the same five, so this is not a model-name spelling problem. Don't read it as "nothing was ever fixed": a recall is a safety defect notified to the regulator, and the MG4 work owners talk about — the XPOWER vibration measures, the undertray bracket, the module updates — is service-campaign and technical-bulletin territory, which never appears on this register.

Aug 2026AUnumber not knownAustralian-delivered MG4, all variants; register state as at 12 August 2026

Detail

Safety / recall Widely reported Vehicle Recalls Australia — national vehicle recall register
921
The Australian recall register lists no MG4 recall at all as at September 2026

The Australian Government vehicle recall register was searched directly on 5 September 2026 by two independent methods: a free-text search for MG4, and the register's own manufacturer filter for the make MG. The make filter returns seven MG recalls covering the MG3 (2021, and 2024-2025), the MG HS PHEV and HS +EV (2021-2022), the ZS (2016-2018), the MG6, the MG TF and the MGF. The importer filter for SAIC Motor Australia returns five recalls, being the MG3 twice, the HS plug-in hybrid, the ZS and the SAIC MG6. The MG4 does not appear in any of them. A control search for MG3 returned the two known MG3 recalls, which confirms the search itself was working rather than silently failing.

Sep 2026AUnumber not knownSearched for the MG4 across all model years on the Australian register; no variant appeared, so all variants are listed

Detail

Safety / recall Widely reported Australian Government vehicle recall register (Department of Infrastructure, Transport, Regional Development, Communications and the Arts)
916
EU service campaign SC077 desensitises lane assist — EU only, not Australia

If your MG4 is a UK or European car, ask your dealer about the free service campaign SC077, which updates the steering and front radar modules and makes lane-keep assist markedly less aggressive.

Jan 2025UK/EUSC077AS-25-006EU MG4, all variants 2022-2025; NOT confirmed for Australia

Detail

Safety / recall Widely reported MGEVs.com owners forum
924
There IS an Australian phantom-braking fix — bulletin AS-TEC-07022024-01, ask for it by number

MG Motor Australia issued technical bulletin AS-TEC-07022024-01, dated 7 February 2024, to address false AEB and forward-collision activations, so quote that number when booking the car in.

Feb 2024AUAS-TEC-07022024-01all Australian MG4 variants (FCW is part of MG Pilot on every AU trim)

Detail

Safety / recall Several reports Electrifying Everything (Neerav Bhatt) — MG4 AEB software update
927
A 2023-registered MG4 shows zero recalls on the DVSA checker — the superlock recall is filed under 2022

The GOV.UK check-vehicle-recalls service returns 'This vehicle has no recalls' for MG MOTOR MG4 model year 2023. The superlock recall sits under model year 2022 instead: R/2022/355, launched 07-01-2023, 1,960 vehicles, for MG4s superlocking while still in running mode — doors unopenable from inside or out, key disabled, windows dead — remedied by a software update. A clean result on a 2023 car therefore proves nothing; check the 2022 listing as well, and note that service campaigns are not what this service is for, so ask the dealer separately by SC number.

Jan 2023UK/EUnumber not known2023 model-year MG4s checked on the UK DVSA recall service

Detail

Safety / recall Several reports GOV.UK check-vehicle-recalls (DVSA)
936
There is a lane keep assist service campaign, so ask the dealer if your car is covered if it is twitchy

Owners have been called in by their dealer for a service campaign that updates the lane keep assist, and in at least one case the same campaign was applied a second time with further refinement. Owners who had it done report fewer false lane-keep interventions and better lane centring afterwards. If your lane keep assist feels twitchy or intervenes when it should not, it is worth asking the dealer whether there is an outstanding lane keep or driver-assist campaign for your car rather than assuming the behaviour is final. Updates like this are applied at the dealer, not over the air.

2026GeneralSC077Dealer-applied lane keep / driver-assist campaign; market and coverage to be confirmed by VIN all variants

Detail

Safety / recall Single report XDA Forums
932
MG uses RCxxx for recalls and SCxxx for service campaigns — dealers call them all 'recalls'

A forum regular sets out MG's convention: "If it's a recall then it'll have an RCxxx number. If it's an SCxxx number then it's a service campaign item, but dealers are lazy and just call them all recalls." RC008 is the MG4's 'getting locked in' superlock fix, and a genuine recall brings a DVSA letter — one owner had his done a year earlier off the back of one. Because dealers use the words interchangeably, ask for outstanding work by bulletin number rather than asking whether there are 'any recalls'. This thread does not establish that RC008 is the only MG4 recall, and does not mention SC077, SC047 or SCUK001.

Jan 2024GeneralSC077SC047SCUK001All 2022-2025 MG4 variants; the naming is MG's own dealer convention, used in both AU and UK

Detail

Safety / recall Single report MGEVs.com — 'Software Recall' thread
933
SCUK001 is a four-module software bundle — EVCC, FDR, BCM and FICM — done in one dealer visit

An owner's October 2023 dealer booking confirmation reads "carry out MG campaign SCUK001 Software updates to be completed (EVCC, FDR, BCM, FICM)" — the EV charge controller, front detection radar, body control module and forward camera module, all in one visit. The same owner hoped it would cure lane-keep and AEB behaviour, AC charger compatibility, head-unit black screens, Android Auto and Bluetooth dropouts, but that is what he was hoping for, not a documented scope, and the confirmation lists no symptoms. A moderator corrected owners calling it a recall: "That's a Service Campaign item (the bulletin will be SCxxxx) not a recall (which would be RCxxx, like the locking in one was RC008)." Ask your dealer whether SCUK001 specifically has been applied, by number.

Nov 2023UK/EUSCUK001UK MG4s delivered 2022-2023, applied at dealer service all variants

Detail

Safety / recall Single report MGEVs.com — 'BCM update (recall)'
923
A VIN-listed charging software campaign, SC47, was issued in March 2023 to improve MG4 charging performance

Service campaign SC47 (bulletin SI-SC2023031001, dated 10 March 2023) had dealers reprogram the charging control unit to a newer version in order to improve charging performance. Eligibility was by VIN list rather than by symptom, cars sitting in stock had to be updated before they were handed over, and the job was quoted at 0.4 hours with the diagnostic report attached to the claim as a condition of payment. Because it is a VIN-based campaign rather than a recall, nobody necessarily contacts you about it, and a car that changed hands or was imported can slip through. If you have an early MG4 and charging has never been quite right, it is reasonable to ask the dealer to check your VIN against SC47 specifically.

Mar 2023UK/EUnumber not knownEuropean VIN-list service campaign from March 2023; covers launch-period cars, Australian equivalence not stated.

Detail

Widely reported SC47 SI SC2023031001 CCU software update on MG4 (MG official repair and maintenance information)
925
OPD was retrofitted to the Excite 51 by a dealer campaign — check yours has it

A service campaign dated 1 September 2023 added one-pedal driving to the Australian 51 kWh LFP Excite after launch, so a used 2023 example may not have it unless the campaign was carried out.

May 2024AUnumber not knownExcite 51 (LFP) only, Australian market

Detail

Several reports Electrifying Everything (Neerav Bhatt) — Australian MG4 software update list
926
The gearbox leak fix was a raised breather — check it was done

On any used 2023 MG4, check both that the modified higher gearbox breather is fitted and that there is no fresh oil under the motor, since a few 2023-build cars still leaked after the change.

Aug 2023AU+UKnumber not knownAustralian-delivered MG4; fix also rolled out in UK/Europe all variants

Detail

Several reports Neerav Bhatt — Australian MG4 FAQ
934
The UK recall register lists no recalls at all for 2023 and 2024 model year MG4s

Checked in September 2026, the UK government recall register returns no recalls for the MG4 in either the 2023 or the 2024 model year, stating plainly that the vehicle has no recalls. The only MG4 entry on that register remains the 2022 model year superlocking recall. This is worth knowing because forum discussion of software updates can read like recall activity when it is not.

Checked September 2026UK/EUnumber not knownUK register only, checked September 2026; says nothing about Australian recall activity

Detail

Single report GOV.UK vehicle recall register (DVSA)

Dealer servicing & updates 10

764
Dealers only apply updates you ask for — bring a list

Book the service with a written list of the actual faults, such as Bluetooth dropping, a laggy or rebooting screen or over-eager lane keeping, because software goes on only when you ask about it by symptom.

Mar-Apr 2025GeneralSC077all 2023 MG4

Detail

Safety / recall Widely reported MGEVs.com — MG4 Software updates
853
SC098 is a 2026 full-software campaign — every controller module, and a download so big it filled a dealer's laptop

An April 2026 thread in the MG4 Urban forum covers service campaign SC098, a full software update across what one owner counts as the car's 23 different controller modules. The package is large enough that one dealer could not fit it on their laptop and was wiping a machine to make room. Owners in the thread are unsure whether it reaches the earlier 2022-2025 MG4 as well as the Urban — one says he can only speak for the MG4 but is fairly sure it is the same for the Urban — so ask your dealer by campaign number rather than assuming either way.

Apr 2026UK/EUSC098MG4 Urban (2025-on) only; explicitly not the 2022-2025 MG4 range all variants

Detail

Safety / recall Several reports MGEVs.com — 'SC098 service campaign - full software update'
770
Australian MG4s run their own infotainment software line, so European version numbers are no guide to whether yours is current

Australian-delivered cars left the factory on a software family that is entirely separate from the UK and European one, with its own numbering that starts much lower. Australian owners comparing notes on the forum keep concluding their car is dozens of releases behind a British car, when in fact the two numbering schemes cannot be compared at all. There is a claim that a service bulletin allows Australian cars to be moved onto the international software, and at least one Australian owner has run a European build, but the long-standing members warn against swapping families: the software is matched to the hardware modules fitted to that car, and the wrong family can cost you functions or leave the head unit unusable. The practical result is that a version number quoted by a UK owner tells you nothing about your own car.

Jun 2026AUnumber not knownAustralian-delivered MG4s, all variants, comparing software versions with overseas owners

Detail

Widely reported MGEVs.com owner forum
768
Independent workshops, not just MG dealers, can access MG's repair information and diagnostic tools by law

In Australia the Motor Vehicle Service and Repair Information Sharing Scheme, a right-to-repair law, requires MG to sell its technical service and repair information and its diagnostic tool access to any qualified repairer, not only its own dealers. MG publishes the process openly: independents apply through MG's technical information portal and request access by email. Access is tiered, from general technical information, to an EV high-voltage safety tier, to a security tier for keys and immobiliser work, and is sold as a paid subscription. In practice this means you are not locked into a dealer for servicing or diagnosis; a properly equipped independent can do the same work.

Nov 2025AUnumber not knownAU right-to-repair (MVIS): independents can obtain MG technical info and diagnostic tools; tiered paid access all variants

Detail

Widely reported AASRA - MG Motor page (Australian Automotive Service and Repair Authority)
793
MG's own MG4 service sheet requires the dealer to look for outstanding service actions before starting work

The very first line of the official MG4 EV maintenance check sheet, before any physical job, is to check for outstanding service actions on the car. The sheet then requires the technician to connect the diagnostic equipment and read, log and clear all stored fault codes as part of the service. Together those two lines are the most useful thing an owner can quote at a service booking: MG's own procedure obliges the dealer to check whether your VIN has any campaign, bulletin or software action waiting, and to pull the codes out of the car. Ask for both in writing - what service actions were found and whether they were carried out, and what codes were logged before they were cleared. Codes are wiped as part of the job, so if you do not ask for the log you lose the record of any intermittent fault the car has quietly been storing.

2023UK/EUnumber not knownMandatory pre-service checks in MG's official MG4 maintenance check sheet; UK/EU document. all variants

Detail

Widely reported Maintenance schedule (MG official repair and maintenance information)
804
MG requires seven powertrain and charging modules to be updated as a matched set, so a single-module update is not the whole job

Bulletin SI-TB2023071101 sets an update rule that explains a lot of half-finished dealer visits. Seven modules - the gateway, the battery management system, the charging control unit, the charge port controller, the suspension/chassis control unit and the two motor power control units - are version-locked together. If a workshop updates or replaces any one of them for any reason, it must read the software level of the other six and bring anything older up to at least the listed level. MG also gives an order of operations, and a later revision of the bulletin adds a specific trap: after updating the charging control unit, the charge port controller can stop responding, and the way to wake it is to plug a charger into the socket, after which its version can be read and updated. Battery management software is specific to your battery size, with different versions for the 51, 64 and 77 kWh cars. If a module has been changed on your car, ask for written confirmation that all seven were checked.

Aug 2023UK/EUnumber not knownMG Motor Europe bulletin, applicable to one identified build variant of the MG4; version levels are European. all variants

Detail

Widely reported SI TB2023071101 EN Software update strategy on MG4 EH32 X1 V2 0 updated on 17082023 (MG official repair and maintenance information)
814
MG's own diagnostic process tells the technician that what you are reporting may simply be normal for the car

Before anything is measured, MG's diagnostic strategy has the technician establish what normal operation of the system looks like, then compare your car against other examples of the same model in normal working order. The manual states plainly that the condition you describe may be a normal condition, and instructs the technician to explain the check results and how the system works back to you. Later, in the vibration section, MG goes further: if the symptom has been reproduced and the car matches known-good cars of the same model, year and configuration, the technician is to treat it as a potential operating characteristic of the vehicle and check the service bulletins to see whether MG has since decided otherwise. This is the documented route by which a real, repeatable complaint ends up written up as no fault found. It also tells you what actually shifts that outcome: not arguing, but a service bulletin, or a comparison against another MG4 that genuinely behaves differently.

2022UK/EUnumber not knownMG4 EV first-generation guided fault finding; UK/EU RMI document, process may differ at Australian dealers all variants

Detail

Widely reported MG4 EV UK Guided Fault Finding, General v1.02 (MG official repair and maintenance information)
791
If a dealer strips the car to find a fault that turns out not to be MG's responsibility, the owner pays the investigation

The warranty statement says exploratory dismantling charges are only reimbursed as part of a valid claim, and that it is the warranty holder's responsibility to authorise and pay those charges if the failure proves not to be MG's. That is the written basis for something owners find outrageous - being asked to approve or pre-pay a diagnostic fee on a car that is still in warranty. It is not a dealer inventing a charge; it is how the policy is written. The practical defence is to ask, before you sign the authority, what the charge will be, what would make it a valid claim, and to have the symptom and any relevant bulletin or service action recorded on the job card first, because a fault that maps to a known campaign is far less likely to end up billed to you.

Oct 2021UK/EUnumber not knownWho pays for warranty investigation work; UK warranty statement. all variants

Detail

Widely reported MG Online Warranty Statement October 2021 (MG official repair and maintenance information)
874
The reduction gearbox holds only 0.75 litres of oil, throws it around by splash, and breathes through a vent plug

MG specifies Shell E-Fluids E6 iX for the single-speed two-stage reducer, with a dry fill of just 0.75 litres, and says the internals are lubricated by splash - the gears fling the oil about, there is no pump. The casing carries an oil filler plug, a drain plug, both sealed with aluminium washers, and a vent plug assembly with a sealing tube at the top. That tiny oil volume is why the oil leaks owners reported were worth taking seriously: there is very little to lose before the gears are running dry. It is also the context for the breather modification that cured them - if the gearbox cannot vent as it warms up, internal pressure pushes oil past the shaft seals. If you find oil under the rear of the car, this is the assembly to name at the dealer.

2023Generalnumber not knownFirst-generation MG4 electric drive unit reducer; UK/EU document. all variants

Detail

Several reports EH32 MG4 EV Description and Operation (MG official repair and maintenance information)
879
A scheduled service is when outstanding software campaigns actually get applied

MG's Australian service sheet carries "check for any outstanding campaigns" and "software updates as required" as standard line items, so a routine service is the appointment at which pending updates go on. You do not need to book a separate visit to ask for them.

August 2026AUnumber not knownAustralian dealers. Observed on a 15,000km first service on a 2025 MG ZS, not an MG4 - the same MG service sheet is used across the Australian range but the campaigns themselves are per-model all variants

Detail

Single report MG4 Owners Australia (Facebook group)

Lane keep & steering assist 6

295
Which? found the LKA steering cars toward oncoming traffic — a UK software update (SC077) followed

Lane-keep assist on the MG4 could steer the car toward oncoming traffic when passing on narrow roads, according to Which? testing in the UK, and MG Motor UK issued an ADAS software update in February 2025.

Feb 2025AU+UKSC077UK MG4s primarily; the underlying LKA behaviour is reported by Australian owners as well all variants

Detail

Safety / recall Widely reported Which? — "MG issues software update following Which? safety concerns with MG4"
304
A 2025 software update turned lane-keep and traffic-jam assist from unusable into something owners leave switched on

Owners who had been turning lane-keep assist off because it made abrupt, unwanted steering inputs report that a 2025 lane-keep software update, applied at the dealer as a service campaign, made both lane-keep and traffic-jam assist far better behaved. Several now leave lane-keep on full-time, describing only an occasional slight tug at the wheel, a beep, and a red lane-line warning when you drift toward the markings, rather than the earlier behaviour they felt could steer them off the road. If your car's lane-keep is still twitchy, it's worth asking the dealer whether this update has been applied.

Mar 2025UK/EUnumber not known2025 lane-keep/TJA update makes LKA usable; owners now leave it on (relates to the AU Aug-2024 update and the LKA campaign already logged) all variants

Detail

Safety / recall Widely reported MGEVs.com owner forum
310
The gentler Lane Keep Assist calibration reached the UK first and Australia later

If your Lane Keep Assist feels aggressive, note that MG's softer calibration (campaign SC077) reached UK and European cars in late January 2025 and, as of the last public report in August 2025, had not been released in Australia.

Feb 2025AU+UKSC077all 2023 MG4; SC077 is UK-only, Australian calibration delayed

Detail

Safety / recall Several reports Neerav Bhatt — Australian MG4 2025 software update improvements
311
SC077 improves the intervention but does not stop the daily reset

On UK and European cars the SC077 update softens how hard lane-keep assist intervenes but does not stop the system re-arming itself every time you get back in, so expect to keep switching it off.

Mar 2025UK/EUSC077AS-25-006EU MG4 post-SC077 all variants

Detail

Safety / recall Several reports MGEVs.com owners forum
313
Australia has NOT received the UK's LKA fix — MG says it's still being "refined for Australian roads"

SC077 is a UK and EU service campaign with no Australian equivalent released, and MG Australia's response was that headquarters are refining the update for Australia, so verify with your dealer rather than assume.

Feb 2025 (comments to Oct 2025)AU+UKSC077Australian-delivered MG4, all variants

Detail

Safety / recall Several reports Electrifying Everything (Neerav Bhatt) — Australian MG4 2025 software updates
312
Least-intrusive LKA config: Alert mode, low sensitivity, audio off

Rather than fighting the master switch, which re-arms at every ignition, UK and EU owners cut the nuisance by setting lane assist to Alert mode with Low sensitivity and the audible warning off, so crossing a line only vibrates the wheel.

Dec 2024UK/EUSC077all 2023 MG4 variants

Detail

Safety / recall Several reports MGEVs.com owners forum

Cruise control & braking 5

327
Phantom braking: MG Australia issued a specific FCW software fix

Ask your dealer for technical bulletin AS-TEC-07022024-01, the 7 February 2024 AEB and Forward Collision Warning software update for Australian MG4s, which is free when applied at a scheduled service.

Feb 2024AUAS-TEC-07022024-01all Australian MG4 variants

Detail

Safety / recall Widely reported Neerav Bhatt — Electrifying Everything (AU)
335
Adaptive cruise shedding speed in corners was a known bug with a named fix

If your MG4's adaptive cruise sheds speed through bends, ask your dealer which software level the car is on — the bug had a named, dealer-applied fix, delivered in Australia and New Zealand via the R11 release and later builds.

Mar 2025AU+UKSCUK0012023 MG4; SCUK001 is the UK campaign code, Australian equivalent came via R11+ all variants

Detail

Safety / recall Several reports MGEVs.com — MG4 Software updates
337
AEB false-triggers when you cross into the oncoming lane past parked vehicles

Crossing into the oncoming lane to pass a stopped bus, truck or parked car can false-trigger the automatic emergency braking, which reads the approaching vehicle as being in your path despite adequate clearance.

Mar 2023-Aug 2025UK/EUAS-TEC-07022024-01all MG4 variants

Detail

Safety / recall Several reports MGEVs.com owners forum
344
Phantom braking has been experienced on Australian cars, not just UK ones

Australian owners are not insulated from the phantom braking reports that dominated UK coverage. One Australian Essence 64 owner recorded the front collision assist triggering unexpectedly twice at highway speeds, alongside lane keeping that jerked the car sideways without cause. This matters because MG Australia subsequently issued a bulletin specifically updating the emergency braking software, which indicates the problem was recognised locally rather than treated as a UK-only issue.

Oct 2023AUnumber not knownReported on an Australian Essence 64; forward collision warning is fitted across the Australian range all variants

Detail

Safety / recall Several reports Electrifying Everything (Neerav Bhatt)
352
MG Australia says its 2025 update cut the cruise set-speed step from 5 km/h to 1 km/h

MG Australia told an owner-blogger its recent software delivers 'better lane keeping warning and steering control, speed control by 5kmh to 1kmh'. On the separate lane-keep campaign SC077, announced in the UK in January 2025, MG Australia said only that 'Headquarters are refining the update for Australia' and that it would be in touch when the update was ready for Australian vehicles. The cruise step is therefore a free, one-minute way to tell whether your Australian car has had any 2025 software at all. The source does not name the UK cruise-control campaign code.

2025AUSC077Australian MG4s serviced from 2025 onward all variants

Detail

Safety / recall Single report Neerav Bhatt — Australian MG4 2025 software update improvements

Tyres, wheels & brakes 3

408
MG itself blames long storage and flat-spotted tyres for part of the high-speed vibration, and requires a road-force test

Owners worked out for themselves that MG4s vibrating on the highway were often sitting on tyres flat-spotted by weeks of standing still in transit or in stock. MG's own bulletin says the same thing: poor stock maintenance during storage, such as long-term parking without the car being moved, causes tyre flat spots which intensify steering wheel and body vibration. It also makes a road-force test part of the official inspection sequence - not an ordinary balance, but a test of the tyre's road force, with any tyre that fails to be replaced before anything else is done to the car. That matters when a dealer says the wheels balanced fine, because an ordinary balance will not find this.

Mar 2024Generalnumber not knownStated in the XPOWER vibration bulletin; the mechanism is general but MG documents it only for that variant.

Detail

Safety / recall Widely reported TI 20240321 EH32 XPower High speed Vibration Solution (MG official repair and maintenance information)
428
Raising XPOWER cold tyre pressure to ~40 psi largely kills the vibration

Several owners found the high-speed vibration largely disappears with cold pressures raised to about 40-41 psi, well above the placard setting, at the cost of a harsher low-speed ride. One owner also found the dashboard was reporting 2.7 bar while a trusted gauge read only 36 psi on the same tyre, so check with your own gauge rather than trusting the TPMS readout. This is a mitigation, not a repair — MG's own bulletin lists pressure adjustment as only one of four steps.

Apr 2024AU+UKnumber not knownMG4 XPOWER with the 100-120 km/h vibration, before dealer work

Detail

Safety / recall Several reports MGEVs.com owners forum
409
Tyre pressure units switching from bar to kPa is a known configuration regression with a documented reversal

MG documented this one precisely. An instrument pack configuration file released on 12 September 2023 changed the tyre pressure display from bar to kPa. Bulletin SI-TB2024011801 says that if the customer prefers bar, the dealer reconfigures the instrument pack to a newer configuration released in January 2024, which puts the units back. It is a 0.2 hour job on MG's diagnostic system, claimed as a technical service bulletin, with the diagnostic report attached to the claim. The important point for an owner is that the units are set by a configuration file loaded into the instrument cluster, not by a menu you can reach - so if the units changed on their own after a dealer visit, that is why, and it is reversible by another dealer visit rather than something you have to live with.

Jan 2024UK/EUnumber not knownMG Motor Europe bulletin; the configuration file versions cited are European releases. all variants

Detail

Widely reported SI TB2024011801 Solution for changing the tire pressure back from Kpa to bar MG4 (MG official repair and maintenance information)

iSMART app & remote 1

060
A flickering SOS warning light is a recognised telematics fault with a software fix, bulletin SI-TB2024042201

MG's April 2024 bulletin describes the symptom exactly as owners see it: the SOS warning light appears on the instrument cluster sporadically and then goes out again on its own, with fault code B1526 stored in the telematics box. The documented fix is to load the newest telematics software, which the dealer downloads and installs from a USB stick, then restart the car and confirm the warning has gone; it is a 0.6 hour job claimed as a technical service bulletin. Just as usefully, MG tells dealers what to do when that does not work: the problem can be caused by hardware or wiring, and the dealer is then obliged to raise a technical support ticket with MG rather than send you away. So an intermittent SOS light is neither normal nor a dead end.

Apr 2024UK/EUnumber not knownMG Motor Europe bulletin; telematics software releases are market-specific, the fault code is not. all variants

Detail

Safety / recall Widely reported SI TB2024042201 Solution for SOS warning light on MG4 (MG official repair and maintenance information)

Accessories & aftermarket 2

726
The MG4 has a factory connector ready for an alcohol interlock, but the function has to be switched on with MG's diagnostic tool

MG's August 2024 bulletin SI-TB2024081501 confirms that the MG4 is not supplied with an alcohol interlock, but that a dedicated connector is reserved for one on the facia harness behind the glovebox. Devices meeting the European standards EN 50436-1 or EN 50436-2 can be wired to it - five wires covering the detection result, the vehicle start status, an ignition wake-up feed, battery power and earth - with the control unit mounted in the passenger side lower trim and the handset placed in the glovebox where the driver can reach it. The part owners and installers most often miss is at the end: the function has to be activated afterwards with MG's dealer diagnostic system, and deactivated the same way before the device is removed. Once active, the cluster displays a prompt to pass the test and the car will not start until it is passed.

Aug 2024UK/EUnumber not knownMG Motor Europe bulletin referencing European alcohol interlock standards; installation is a dealer-level job requiring diagnostic activation.

Detail

Safety / recall Widely reported EH32 X9X10 Alcohol interlock installation facilitation (MG official repair and maintenance information)
734
Better tyres reduced the XPOWER vibration for most, but did not cure it — the thread starter blamed the driveshafts

On the XPOWER tyre-upgrade thread, owners who moved off the original fitment to Michelin Pilot Sport 5 or CrossClimate 2 mostly report the vibration reduced rather than gone. The thread starter, asked directly whether his had been cured by the Pilot Sports, answered "Are the vibes gone? In a word....... No. Much reduced? Yes", and concluded the real cause was the driveshafts not being perfectly balanced — a year later he was calling it a manufacturing and quality-control problem in the driveshafts and suspension mountings. Rebalancing likewise "did reduce vibes, but did not dispel them completely". One owner does claim his CrossClimate 2s "solved the problem not only with regards vibration but also the grip", so a cure is contested rather than unheard of. Fit better tyres for grip and noise if you want them, but do not expect them to close out the vibration — push for the drivetrain bulletin instead of buying a second set.

Dec 2023AU+UKnumber not knownMG4 XPOWER on original Bridgestone fitment with high-speed vibration

Detail

Safety / recall Several reports MGEVs.com owners forum

Service bulletins & tech notes 19

898
MG's own pre-delivery inspection makes clearing outstanding recalls and service actions the dealer's first job before you collect the car

The very first numbered item in MG's UK Pre-Delivery Inspection manual for the MG4 tells the technician to check the register of service actions, recalls and technical bulletins and to carry out anything outstanding before touching the rest of the car. The later revision of the manual widened the wording from just 'service action bulletins' to explicitly include recalls and technical bulletins, and the same line heads both PDI tick sheets and both maintenance check sheets. That matters because owners are routinely told a fix is not available for their car: if a campaign existed when your car was prepared, applying it was not optional, and the signed PDI sheet filed with your customer record is the dealer's certificate that it was done. Ask to see that sheet, and ask again at every service, because the maintenance sheets repeat the same requirement.

2023UK/EUnumber not knownUK PDI and service process; the obligation to clear outstanding campaigns before handover and at every service.

Detail

Safety / recall Widely reported MG 4 UK PDI Manual V1 02UK (MG official repair and maintenance information)
901
The sagging rear undertray is documented as a guard-to-battery gap, and MG says it is only fixed if you complain

Technical Information TI-20231228, issued by SAIC Motor CEE, describes what owners call the drooping undertray: after a long period of driving, the gap between the rear subframe lower guard and the high-voltage battery can open up. The remedy is an aftersales aluminium alloy bracket (part 11769392) mounted externally on the guard to control the gap, held by two longer bolts (90006778) replacing the originals, all torqued to 4-6 Nm, with the middle mounting point keeping its original bolt. It is quoted at 0.2 hours and claimed under fault code 62 (IMPROPER CLEARANCE). The line that matters most to an owner is in capitals in the document: no proactive action is needed and no marketing activity was run, and the work is to be done only where a customer raises the concern. So a dealer saying there is 'nothing outstanding on your car' is not the same as saying nothing exists - you have to report it.

Dec 2023UK/EUnumber not knownSAIC Motor CEE technical information, Central and Eastern Europe; explicitly complaint-driven, not a campaign. all variants

Detail

Safety / recall Widely reported TI 20231228 EH32 Rear Subframe lower guard to Battery Gap CEE (MG official repair and maintenance information)
902
An airbag warning light for a low-resistance left curtain airbag is usually a connector lever, not a new airbag

If the airbag warning lamp comes on and the stored fault is B0021-1A - left curtain airbag resistance too low - MG's documented first action is not to replace the airbag. Bulletin SI-TB2023072101 tells the dealer to remove the connector at the airbag control module (shown as BY068 on the wiring diagram), separate the green locking lever from the cover hinges and fit a new lever, then refit and re-diagnose. The new lever is identified by a spot of white paint because it is otherwise indistinguishable from the old one. The whole job is 0.6 hours plus a small connector part, and only if the fault survives the repair is it escalated to MG for further support. If you are quoted for a curtain airbag replacement on this fault code, this is the document to raise first.

Jul 2023UK/EUnumber not knownMG Motor Europe bulletin; applies to the specific fault code B0021-1A, not to airbag lights generally.

Detail

Safety / recall Widely reported SI TB2023072101 Left curtain airbag resistance low repair on MG4 (MG official repair and maintenance information)
900
An early campaign (SC42) retuned the MG4's driver monitoring, and a renamed menu item tells you whether your car has had it

MG ran a service campaign in December 2022 - SC42, bulletin SI-SC2022122201 - because the driver monitoring system was not adapting well to how customers actually drive. The fix is not a mechanical one: the configuration in three modules (the instrument pack, the infotainment head unit and the front camera module) is reloaded to a newer level, and MG told dealers to reload all three even if the files already looked current. The genuinely useful part for an owner is the verification step MG gives its own technicians: after the campaign the function is renamed in the car's menus from 'Driver Drowsiness Detection' to 'Driver attention warning system'. If your car still shows the old wording, the campaign has not been applied. Cars sitting in stock were supposed to be done before delivery, and eligibility was by VIN list, so a car that changed hands early could have been missed.

Dec 2022UK/EUnumber not knownEuropean VIN-list campaign from Dec 2022, so it covers launch-period cars only; Australian equivalence not stated.

Detail

Safety / recall Widely reported SI SC2022122201 Improvement of Driver Monitor System on MG4 (MG official repair and maintenance information)
904
A February 2024 Australian bulletin updated the AEB software specifically to reduce phantom braking

MG Australia released a software update for all MG4 variants to improve autonomous emergency braking, under bulletin AS-TEC-07022024-01 dated 7 February 2024, described as the MG4 AEB Software Update. It targets the forward collision warning system and specifically the behaviour when cars are turning across traffic, which is one of the situations owners described as triggering unexpected braking. Every Australian MG4 has forward collision warning as part of MG Pilot, so it applies across the range.

Feb 2024AUAS-TEC-07022024-01All Australian MG4 variants, since forward collision warning is part of MG Pilot on every one

Detail

Safety / recall Several reports Electrifying Everything (Neerav Bhatt)
905
The emergency braking update applies to cars built February 2024 and earlier; later stock should already have it

Useful for working out whether the phantom braking software update is relevant to your car. Australian owners understand the emergency braking update to apply to vehicles built up to and including February 2024, with cars built after that expected to leave the factory with it already installed. If your car is older than that and has not been back to a dealer, it is a strong candidate for the update. If it is newer, the update is probably not what is causing your problem.

Dec 2024AUnumber not knownAustralian cars built to February 2024; applies across the range all variants

Detail

Safety / recall Several reports Whirlpool Australian owner forum
906
The undertray fix is a metal bracket and takes about ten minutes at the dealer

The Australian undertray bulletin turns out to be a small job. Owners report the remedy is a metal bracket fitted under warranty to stop the undertray sagging, and that the dealer work takes around ten minutes. Several owners had it done proactively on 2023 cars without having complained, while others had to ask for it and were then accommodated. Given how cheap it is to do and that a sagging undertray is one of the suspected causes of highway vibration, it is worth asking about at your next service whether or not you have a symptom.

Oct 2024AUAS-TEC-02112023-01Australian bulletin; build range not stated by owners, so all variants are listed

Detail

Safety / recall Several reports Whirlpool Australian owner forum
907
Undertray sagging was a UK complaint before it became an Australian bulletin, and some dealers just removed the tray

The undertray problem has a history worth knowing. UK owners reported the protective undertray sagging and buckling as early as 2023, with reports of dealers declining to repair it or simply removing the tray altogether. Australia later got a formal bulletin with a bracket fix. If a dealer proposes removing your undertray rather than fixing it, that is not the remedy: the tray is there for aerodynamics and to protect the underside, and a bracket fix exists.

Mar 2023AU+UKnumber not knownReported on UK cars in 2023; the bracket remedy is documented for Australia all variants

Detail

Safety / recall Several reports Whirlpool Australian owner forum
908
The reduction gearbox oil leak was fixed by a breather pipe modification within about a month

The early gearbox oil leak that worried a lot of prospective buyers has a resolution. UK owners reporting it in April 2023 had it addressed by May via a breather pipe modification, which is a small job rather than a gearbox replacement. If you are looking at an early car and find oil leak reports in its history, the question to ask is whether the breather modification was carried out, not whether the gearbox was replaced.

Apr - May 2023UK/EUnumber not knownEarly UK cars from 2023; the Long Range 77 and XPOWER arrived later

Detail

Safety / recall Several reports Which Mobility Car forum
911
A forum member's AI tool cites MG bulletin TI-20240321-EH32, blaming the driveshaft for the ~110 km/h XPOWER vibration

In February 2025 an MGEVs.com member posted the output of an MG4-specific GPT he was training. It cites a Technical Information bulletin, TI-20240321-EH32, and says the XPOWER's high-speed vibration occurs specifically around 110 km/h, is felt in both the steering wheel and the seat, and is primarily caused by the driving shaft acting as an excitation source. Another XPOWER owner replied that this matched what he had observed since October 2023. The reference number is worth quoting to a dealer, but note what the source actually is: an AI summary posted by an owner, not the document itself — nobody in the thread posted the bulletin, and no title for it is given.

Dec 2024GeneralTI-20240321-EH32MG4 XPOWER at steady cruise around 100-120 km/h; vibration felt through steering wheel and seat

Detail

Safety / recall Single report MGEVs.com owners forum
914
There is an Australian bulletin for an undertray fix, and it may be behind a vibration you can feel

MG Australia issued a technical bulletin covering an undertray fix, reference AS-TEC-02112023-01, and Australian buyers were advised to confirm it had been carried out before taking delivery. This is worth knowing beyond delivery day: owners chasing a rumble or vibration at highway speed have repeatedly suspected an undertray that is not properly secured, where it can flap and transmit into the body. If your car has an unexplained vibration, asking whether this bulletin has been applied is a cheap first question.

Sep 2024AUAS-TEC-02112023-01Australian bulletin; the build range it covers is not stated in the source, so all variants are listed

Detail

Safety / recall Single report Electrifying Everything (Neerav Bhatt)
896
MG bulletin AS-TEC-02112023-01 adds a support bracket, part 11769392, for the sagging MG4 undertray

The undertray under the battery bulges and sags, and MG's remedy is a support bracket — part number 11769392, quoted on the forum by a moderator, with at least one UK dealer showing it in stock. Ask by bulletin number, because owners repeatedly hit dealers who denied all knowledge of both the bulge and the bracket; one owner was told MG no longer supplies it and it is out of stock, yet others had it ordered in about a week and fitted in roughly half an hour at a service. What the thread does not establish is a price, the bolt count, or trays being lost in standing water.

Nov 2025AU+UKAS-TEC-02112023-01Any 2022-2025 MG4 whose front undertray edge hangs below the sill line; worst if you drive through standing water at speed all variants

Detail

Widely reported MGEVs forum
897
There is an MG service bulletin and sealant parts kit for the boot water leak, needing bumper removal

MG has issued a technical bulletin covering the water-in-boot problem, with a dedicated sealant parts kit the dealer must order in. The documented repair means removing the rear bumper, applying the specified sealant to a gap in the bodywork sealing behind the bumper, and leaving it to cure, so it is typically a two-day job rather than a quick reseal. Owners have seen the printed bulletin, with strip-down photos, in their service paperwork, though dealers generally do not hand a copy over. Note that owners disagree over what the bulletin targets: at least one dealer stated it seals a gap in the bodywork behind the bumper and not the vent flaps themselves.

Aug 2024Generalnumber not knownDealer-applied sealant bulletin, bumper-off, ~2-day cure all variants

Detail

Widely reported MGEVs.com owner forum
899
The transmission leak repair includes topping the gearbox oil back up, and metal in the drained oil means the job must be escalated

The German-market version of the same breather bulletin adds detail the English one leaves out. When the gearbox oil is checked as part of the repair, roughly 0.7 litres (plus or minus 0.05) has to be put back in, and MG tells workshops the drained oil may be caught and reused. Critically, it also says that if the oil contains metal particles or is otherwise in poor condition, the dealer must stop and contact MG technical support rather than simply refitting it - that is the point at which the problem is no longer a leaking breather. MG Germany supplied the repair kits to dealers free of charge and told them not to claim the parts back on warranty. If your car has this repair done, it is worth asking what the drained oil looked like and whether it was replaced or reused.

Mar 2023UK/EUnumber not knownGerman-language MG Motor Deutschland bulletin; free repair kits and parts claiming are German dealer process only. all variants

Detail

Widely reported SI TB2022110901 MG4 Ventilation KIT Reparatur Kit update 22 03 2023 (MG official repair and maintenance information)
909
Radio that freezes or cuts out on 2022-2024 cars is usually a faulty DAB module, and the fix is a replacement

If your radio randomly freezes, loses sound, changes station on its own or needs a reboot to come back, you are not imagining it and it is not something you are doing wrong. Cars from roughly 2022 to 2024 were built with a separate external DAB radio module that runs hot and has buffering faults, a part substituted in during the chip shortage. Later cars moved that hardware onto the main infotainment board, which is why newer cars behave differently. The real fix is having the module replaced under warranty, not another software reflash, so ask the dealer specifically about the DAB module rather than accepting 'no fault found'.

2024 - 2026Generalnumber not knownCars built roughly 2022-2024 with the external DAB module; later builds moved it onto the main board all variants

Detail

Several reports XDA Forums
903
Undertray sag has an Australian bracket fix — bulletin AS-TEC-02112023-01, ask before delivery

Australian owners found the front plastic undertray sagging on new cars, and MG Australia's fix is a metal bracket done under warranty at no cost. Owners who spotted the dip at handover made the dealer do it before they accepted the car; one dealer quoted a couple of hours, another forum member said it is about a ten-minute job. Look under the front of the car at delivery and quote the bulletin number.

date not establishedAUAS-TEC-02112023-012023 and 2024 Australian-delivered cars with a visible dip in the front underbody cover all variants

Detail

Several reports Whirlpool Forums
910
When the traction battery management module is replaced, your mileage and battery history are carried across

MG's programming and configuration manual documents a battery management system parameter backup and write procedure. Before a battery management module is replaced, the dealer diagnostic system reads the battery data, mileage, date and other information from the old module, and after fitting writes that information into the new one. The manual gives a separate procedure for the case where the old module can no longer communicate, in which case the backup step is not possible. The execution conditions include that nobody sits in the driver's seat during the operation and that the 12 volt battery is on an external charger.

Jul 2023Generalnumber not knownDocumented for the MG4 generally, so all variants are listed

Detail

Several reports MG4 EV Programming and Configuration Manual, July 2023 (MG official repair and maintenance information)
913
MG Australia had a list of MG4 software improvements in development in 2025, with the Excite getting fewer of them

An Australian round-up of software work in development listed several items: a refinement of lane keep assist being adapted from the UK version, which reportedly softened the aggressive steering corrections; wireless CarPlay and Android Auto possibly enabled through an add-on device; a new voice command; a toggle for the built-in navigation's suburb alerts; customer-installable map updates via USB under investigation; and the possibility of custom drive mode settings persisting between trips. The article noted these were aimed mostly at Essence and above, with the Excite receiving fewer changes because it has fewer infotainment features to change.

Feb 2025AUnumber not knownAustralian variants; the article notes Excite receives fewer updates than Essence and above all variants

Detail

Single report Electrifying Everything (Neerav Bhatt)
912
A forum member lists MG bulletins AS-22-TB053, TB059 and TB061 covering CCU, FVCM and BCM

MG's technical bulletins are not published, but one long-standing forum member lists three by number: AS-22-TB053, which updated the charge control unit, gateway and instrument cluster (CCU, GW, IPK); AS-22-TB059 for the forward camera module (FVCM); and AS-22-TB061 for the body control module (BCM). The same thread names SC47 and SCUK001 as service campaigns. Only one poster gives these codes, so treat them as a lead to hand the service desk rather than confirmed MG documentation. The CCU work here was software; a hardware CCU replacement is a separate, much more expensive job.

Nov 2023UK/EUAS-22-TB053AS-22-TB059AS-22-TB061SCUK0012022-2023 MG4s at UK dealers; CCU/gateway/cluster, forward camera and BCM modules all variants

Detail

Single report MGEVs.com — 'Charge Control Unit Recall'

Vibration & drivetrain NVH 6

471
MG's own order for an MG4 that shakes at speed is tyre condition, then wheel balance, then springs and dampers

The highway shake that MG4 owners have argued about for years has a manufacturer cause list, and it is short. For a car that jitters while driving, MG says check the tyre tread is smooth and free of anything embedded in it, then check the wheels are dynamically balanced within tolerance, then look at whether a front spring has lost its rate, then check the front damper for leakage or damage. Nothing else is on the list. That is first-party support for what owners worked out themselves: the vibration is overwhelmingly a tyre and balance problem, not a mysterious chassis defect, and a proper balance or a fresh set of tyres is the sensible first spend. The related complaint of uneven tyre wear starts with tyre pressure and balance too, with wheel alignment checked only at the very end.

May 2022Generalnumber not knownMG4 Electric first generation; UK/EU documentation, symptom-cause list is a vehicle fact all variants

Detail

Safety / recall Widely reported MG4 EV Service Diagnostic and Measurement Manual, Phenomena Based (MG official repair and maintenance information)
489
A motor-mount replacement under warranty cured one XPOWER's vibration completely

A French owner took the MG technical bulletin to his dealer, who replaced the motor mounts under warranty, after which he reported the car no longer vibrated at all. This is the clearest documented success in the public threads and it followed handing the workshop the bulletin rather than describing the symptom. Photographs of the removed mounts numbered to match the bulletin were posted alongside.

Dec 2024UK/EUTI-20240321-EH32MG4 XPOWER with high-speed vibration, dealer working from TI-20240321-EH32

Detail

Safety / recall Single report MGEVs.com owners forum
462
MG's own bulletin recognises the XPOWER vibration at about 110 km/h and lays out a four-step remedy in order

Technical Information TI-20240321-EH32, issued by SAIC Motor International for all overseas markets, states plainly that the XPOWER can produce a vibration felt through the steering wheel and the seat at around 110 km/h, and that not every car does it. MG's engineering explanation is that at speed the driveshafts act as an excitation source and the vibration is carried into the seat and wheel through the body structure. The prescribed order of investigation is: set the tyre pressures to the recommended values and retest; road-force test the tyres and replace any that fail; fit the steering wheel damper and retest; and only for customers still complaining severely after that, consider the revised suspension parts. This is the document to name if a dealer has told you the shake is normal, cannot be reproduced, or that nothing exists for it.

Mar 2024GeneralTI-20240321-EH32SAIC Motor International bulletin marked for all overseas markets; XPOWER only, not the two-wheel-drive cars.

Detail

Widely reported TI 20240321 EH32 XPower High speed Vibration Solution (MG official repair and maintenance information)
463
There is a revised XPOWER suspension for severe vibration, in production from 21 February 2024, but MG tells dealers not to fit it routinely

The same MG bulletin goes further than the steering wheel damper. It says the engineering team evaluated a new suspension solution that meets the expectations of customers most sensitive to vibration, and lists the parts involved: revised left and right rear mounts, a revised front upper mount crossmember and a revised rear suspension frame. MG is careful about it - the work is described as technically demanding, recommended only for individual customers with severe complaints, and explicitly not suitable for a blanket service campaign. Two production breakpoints are given: the steering wheel damper went into build on 15 October 2023 and the revised suspension on 21 February 2024, so an XPOWER built after that date should already have both. For an owner who has had the damper fitted and still feels the shake, this is the documented next step rather than the end of the road.

Mar 2024Generalnumber not knownSAIC Motor International bulletin for all overseas markets; XPOWER only.

Detail

Widely reported TI 20240321 EH32 XPower High speed Vibration Solution (MG official repair and maintenance information)
464
The XPOWER steering wheel damper is a documented part built into the horn mechanism, for cars produced before 15 October 2023

Bulletin SI-TB2024011601 describes the steering wheel damper repair in detail. The dealer first confirms the complaint and checks that the car was produced before the 15 October 2023 breakpoint - after that date the damper is factory-fitted. The airbag comes off, the old horn mechanism (three bolts) is removed and a new damped assembly, part number 11623528, goes in its place; it is a 0.4 hour warranty job claimed under fault code 36 (VIBRATES), and MG restricts it to all-wheel-drive cars. One line in the bulletin is worth knowing: MG warns that the springs and rubbers in the new part can shift out of position in the packaging, and shows which positions are right and wrong. A damper assembled with a displaced spring is a plausible reason why some owners report the fix made no difference.

Jan 2024UK/EUnumber not knownMG Motor Europe bulletin, AWD (XPOWER) only; the part number and breakpoint are corroborated by the international bulletin.

Detail

Widely reported SI TB2024011601 Damper installation in steering wheel on MG4 (MG official repair and maintenance information)
483
Wind noise at speed usually comes from the quarter light, and dealers often say there is no bulletin for it

A whistle or roar that appears somewhere between about 50 and 80 km/h and grows with speed is most often the small fixed quarter light window not being properly sealed, rather than the door seal or the mirror. Owners are clear it is a fault rather than a characteristic, but dealer response has been inconsistent: several were told no service bulletin exists, while at least one owner had the quarter light replaced. The workaround owners use is residue-free tape around the quarter light edge, which noticeably reduces it.

Oct 2023UK/EUnumber not knownReported on UK cars across trims; variant not identified as a factor all variants

Detail

Several reports MGEVs.com owner forum

Drive modes & regen 2

379
One-pedal driving is not remembered between starts on MY23 cars, but MY24 and a dealer update fix it

On the 2023 model year the one-pedal driving setting resets every time you start the car, so you have to turn it back on for each drive. MG confirmed this in writing to an owner, saying the memory was added on the 2024 model year following customer feedback. Owners report the newest infotainment and control-module software from the dealer makes a 2023 car keep the one-pedal setting after a restart too, so if this annoys you it is worth asking the service centre to bring the car up to the latest software. Note the lane-keep 'alert only' preference is still not remembered even on the latest software.

Jan 2025Generalnumber not knownReported on 2023 vs 2024 model-year cars; applies across the range all variants

Detail

Safety / recall Several reports XDA Forums
384
One-pedal driving was added to the 51 kWh car by a dealer campaign, so the earliest ones did not have it

If you have an early Excite 51 with no one-pedal driving option, it may not have been built with it. MG Australia ran a campaign from September 2023 that added one-pedal driving to the 51 kWh variants specifically. Cars that never went back to a dealer may still be without it. Since Australian MG4s do not update over the air, the feature does not arrive on its own; it needs a dealer visit.

Sep 2023AUnumber not knownAustralian 51 kWh variants; the larger packs were not part of this campaign

Detail

Single report Electrifying Everything (Neerav Bhatt)

12V battery & parasitic drain 1

563
Flat 12V batteries usually trace to one of four causes, and only one of them is a faulty battery

Owners collecting cases together identified four recurring causes. A genuinely defective 12V battery that no longer holds charge is only one. The others are a charging system not topping the 12V up properly, which dealers address with a software update; the car being left unused for over a month; and parasitic drain from things owners added themselves, most often dashcams and plugged-in diagnostic dongles. Before replacing the battery, work out which of the four you have, because three of them are not fixed by a new battery.

Jul 2024Generalnumber not knownReported across MG4 trims; variant not identified as a factor all variants

Detail

Widely reported MGEVs.com owner forum

Body, water & rattles 4

500
The official boot water leak fix is sealant brushed into a body cavity behind the rear bumper, bulletin SI-TB2024042401

MG's April 2024 bulletin states that water can get into the boot because of improper sealing, and sets out the repair. The rear bumper comes off - sixteen screws into the wheelhouse liners and brackets, a black cover, four more screws and the electrical plugs - and the technician then brushes self-adhesive sealer down into the hollow cavity from top to bottom, checks that every hole and gap in that area is covered and that no residue is left around it, and refits the bumper. It is booked at 0.4 hours under fault code 42 (LEAKS). Note what MG identifies as the cause: a sealing gap in the body structure behind the bumper. That is not quite the same as the air-extractor vent flaps that owners most often blame, so a workshop that only reseals the vents has not done this bulletin.

Apr 2024UK/EUnumber not knownMG Motor Europe bulletin; the repair is body sealing behind the rear bumper, quoted at 0.4 hours. all variants

Detail

Widely reported SI TB2024042401 Solution for water ingress the trunk on MG4 (MG official repair and maintenance information)
501
MG's own layout confirms the pressure-relief vents behind the rear bumper that owners identified as the boot water path

The cabin is fitted with pressure relief valves that let air out when you close a door or the blower pushes fresh air in, so the pressure equalises and your ears do not pop. MG states there is one at each side of the boot, and that they discharge into the covered space between the body and the rear bumper. Each is a grille covered by a soft rubber flap acting as a one-way check valve, whose opening automatically adjusts to the pressure difference between the cabin and outside. That is exactly the location and mechanism owners diagnosed as the usual entry point for water in the boot — and this is manufacturer confirmation that they are one-way rubber flaps in the body, not sealed panels. If a flap is distorted, contaminated or poorly seated, there is a direct path into the car. It also explains why the doors need a firmer push to close than owners expect.

2023Generalnumber not knownRelief valve design and location from MG's UK/EU training material; a body design characteristic common to the model. all variants

Detail

Widely reported EH32 MG4 EV Description and Operation (MG official repair and maintenance information)
510
Water round a door, window or tailgate does not mean a bad seal - MG's first answer is to adjust the panel

The water leak section carries an explicit warning against the obvious conclusion: if a leak is found around the door, window, trunk lid or liftgate, that does not necessarily indicate a poor weatherstrip, and an adjustment to the area may resolve the condition on its own. For MG4 owners with boot water this is important, because the usual dealer response is a new seal or a sealant kit, and owners repeatedly report those not holding. MG's own hierarchy puts panel and closure alignment ahead of replacing rubber. The same idea runs through the wind noise section, where misaligned body surfaces sit alongside leaking seals as a primary cause. If a replacement seal has already failed to cure your leak, asking about tailgate or door alignment is asking for the step MG documents rather than a repeat of the one that did not work.

2022Generalnumber not knownMG4 EV first-generation; body sealing principle, not market specific all variants

Detail

Widely reported MG4 EV UK Guided Fault Finding, General v1.02 (MG official repair and maintenance information)
529
Automatic headlights trigger under bridges and shadows; sensitivity isn't adjustable

The MG4's automatic headlights have no user-adjustable sensitivity, and owners report them switching on under overpasses and in tree shadow.

Wiki, 2022-2026AU+UKSCUK001MG4 2022–2025; SCUK001 is a UK update reference all variants

Detail

Several reports MGEVs forum — MG4 Wiki: Hints, Tips and Solutions

Screen, audio & radio 3

007
There are two different MG4 head units, iSMART Full and iSMART Lite, and the weather panel on the home screen tells you which you have

MG's infotainment bulletins are split by head unit rather than by model year or trim, and the manufacturer gives a simple way to tell them apart: iSMART Full shows an online weather report on the home screen, and iSMART Lite does not. This is not cosmetic - the two run entirely separate software lines with different version numbering and different feature lists, and MG warns dealers in capitals that the Lite software package must not be loaded onto a Full head unit. So before you read anything about an infotainment update, or ask a dealer for one, establish which head unit your car has, because a change list written for one is not a promise for the other, and the wrong package on the wrong unit is a real risk.

Sep 2023Generalnumber not knownStated in MG's European head unit bulletins; the Full/Lite split itself is a car characteristic, the version numbering is European. all variants

Detail

Widely reported SI TB2023081101 iSMART Full FICM software update on MG4 (MG official repair and maintenance information)
008
A 2023 head unit update stopped the driver assist buttons and the radio switching themselves when the display changed brightness

Bulletin SI-TB2023081101 lists what the August 2023 iSMART Full head unit release actually fixed, and it reads like a list of owner complaints. The MG Pilot driver assistance buttons will no longer switch on by themselves when the screen backlight changes; FM radio will no longer jump to DAB by itself on a backlight change; the 360 degree camera will stay on screen in front view when you shift out of reverse into drive instead of dropping away; the climate interface is redesigned; the climate menu opens automatically at start-up if the air conditioning was left on; and the battery and charging screen is improved. The significance is the backlight link - MG confirms that the car changing settings on its own was a genuine software fault triggered by the day/night display transition, not owners imagining it. The update is loaded by a dealer from a USB stick in the left-hand port under the screen.

Aug 2023UK/EUnumber not knownEuropean iSMART Full release; the fix list is manufacturer-stated, the version numbering is not applicable to Australian cars. all variants

Detail

Widely reported SI TB2023081101 iSMART Full FICM software update on MG4 (MG official repair and maintenance information)
009
A missing outside temperature reading on the Lite head unit has a documented software fix, which also added the Power Off shortcut

Bulletin SI-TB2023092701 covers the September 2023 release for the iSMART Lite head unit and lists three changes: the exterior temperature reading is shown on the screen again after an earlier version had dropped it, the climate interface is redesigned, and a shortcut to Power Off is added to the drop-down menu. That last one is where the car's much-discussed 'off button' actually came from - it is a software-added shortcut, not something every car has always had. If your outside temperature display disappeared, this is a known regression with a documented fix rather than a fault to be chased. MG also warns that the screen goes black for a short time partway through the update and must not be touched, which is worth knowing if you are watching it being done.

Sep 2023UK/EUnumber not knownEuropean iSMART Lite release; applies only to cars with the Lite head unit. all variants

Detail

Widely reported SI TB2023092701 iSMART Lite FICM software update on MG4 (Lite head unit) (MG official repair and maintenance information)

Styling & protection 1

709
MG publishes the MG4's paint codes and matched refinish formulas, so give a body shop the code rather than the colour name

MG's paint bulletin SI-TB2023102601 lists the MG4's factory colours against a three-letter paint code and a matched refinish code: Dover White (WSB), Pebble Black (PBC), Diamond Red (RSJ), Medal Silver (SSA), Brighton Blue (JAY), Fizzy Orange (NFZ), Andes Grey (PAG) and Hunter Green (GWH). It also tells refinishers where to get the mixing formula - registering on the paint supplier's online service and searching the code. The practical point for an owner is that the three-letter code, which is on the car's identification label, is what a paint supplier or body shop actually needs; marketing colour names are inconsistent between markets and years, and ordering touch-up paint by name is how you end up with a slightly wrong shade on a black car that shows everything.

Oct 2023Generalnumber not knownEuropean paint bulletin covering several MG models; MG4 colour availability differs by market. all variants

Detail

Widely reported SI TB2023102601 EN MG paint codes (MG official repair and maintenance information)

Cold & hot weather 1

285
Cabin temperature setting reads several degrees high until the R63 HVAC update

On UK and European cars, early MG4 infotainment software scaled the climate temperature control too high — one owner's detailed report puts it 4-5 degrees out, so the cabin ran cooler than the number set.

Mar 2025UK/EUnumber not known2023 MG4 on pre-R63 infotainment software all variants

Detail

Single report MGEVs.com — MG4 Software updates