| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | Fault Name | Description | Severity | Status | Notes | Forum Threads | ||||||||||||||||||||
2 | Locked In | Locked inside the car, key does not work and nor do the door unlock buttons, only exit possible via emergency release of rear hatch as documented in the manual. | 1-Critical | 5-Resolved | A handful of confirmed cases, quickly resolved through a software update that became a recall for all affected MG4s. Check with your dealer if you have this update. Also note the emergency escape procedure linked in the forum threads to the right. | https://www.mgevs.com/threads/car-froze-unable-to-exit-car.10020/ https://www.mgevs.com/threads/emergency-exit-instructions.10028/ https://www.mgevs.com/threads/locked-in-my-mg4-unable-to-escape-serious-safety-issue.8137/ | ||||||||||||||||||||
3 | Speed Limited | Car stops accelerating at particular speed (which may vary), will not go faster. Unpredictable onset but seems linked to low battery charge. | 2-High | 2-Confirmed | A handful of confirmed cases mainly on the SR model with LFP battery pack. BMS update rumoured to be available to address this. Unclear if this is a fix. | https://www.mgevs.com/threads/mg4-restricted-speed-weird.8620/ | ||||||||||||||||||||
4 | Airbag Deployment | The airbag partially deploys while the car is parked. | 2-High | 2-Confirmed | Only a single case so far (seems like a one off, hence why this is not Critical). Suspected faulty airbag module. | https://www.mgevs.com/threads/airbag-partially-deployed-whilst-parked-up-after-dealer-update.8932/ | ||||||||||||||||||||
5 | Software Update Failures | When the dealer tries to update the car's software it fails into an inconsistent state. | 2-High | 2-Confirmed | It seems to be difficult and take a long time for most dealers to recover the car from this situation, which is why this is a High severity issue if it occurs. | https://www.mgevs.com/threads/mg4-software-recall-upgrade-not-working.10048/ https://www.mgevs.com/threads/mg4-recall.10156/ https://www.mgevs.com/threads/safety-recall-update-failed.9498/ | ||||||||||||||||||||
6 | Broken Charger | The on-board type 2 charger fails, sometimes accompanied with a bang. | 2-High | 2-Confirmed | Happened on at least one car, not as simple as a charging unit replacement, investigations ongoing. | https://www.mgevs.com/threads/mg4-loud-bang-when-charger-connected.9604/ https://www.mgevs.com/threads/charge-control-unit-recall.10472/ | ||||||||||||||||||||
7 | Head Unit Activation | The infotainment screen ask to "activate head unit" when attempting to access weather or settings. | 2-High | 2-Confirmed | A few people have had this, possible causes are MG China server problems and an earlier version of the R33 infotainment update which had this bug (replaced by a more recent version). Apparently there is special "transport mode" software that can get left on the car that needs removal by the dealer. | https://www.mgevs.com/threads/mg4-activate-head-unit-message.9091/ | ||||||||||||||||||||
8 | Rejections | A number of people have ended up rejecting their car and returning it to the dealer for a refund. This has normally been due to a catalogue of faults that their dealer cannot solve. It seems some cars (particularly early ones) had quite a number of faults and bugs. | 2-High | 2-Confirmed | The threads linked to the right are the key ones that have recently involved users rejecting cars. Inside the threads are advice and information on how to reject as well as customer's experiences when they try to do so. | https://www.mgevs.com/threads/car-finally-rejected-recalcitrant-dealer.8774/ https://www.mgevs.com/threads/what-can-i-do-about-waiting-over-60-days-for-an-mg4-repair-advice-wanted.9839/ https://www.mgevs.com/threads/mg4-restricted-speed-weird.8620/ https://www.mgevs.com/threads/what-happens-to-rejected-cars.8753/ https://www.mgevs.com/threads/rejected-the-car.9768/#post-166144 https://www.mgevs.com/threads/ongoing-rejection-saga-advice-would-be-appreciated.9710/#post-163486 https://www.mgevs.com/threads/car-rejection-after-30-days.9038/#post-149702 | ||||||||||||||||||||
9 | Oil Leak | The car drips oils from the rear reduction gearbox unit, showing up as drops on a driveway and/or streaks on the undertray. | 2-High | 3-Fix (Partial) | Early cars suffer badly from this, later seem better. Several fixes have come from MG: first a new breather solution with a bend in the pipe, then a kit to better secure this to the gearbox (since some early applications leaked from the join) and now a 3rd version (changes unclear). Newer batches are fitted with this solution from the factory. Some cars still leaking despite all the attempts to fix. Controversy over the right amount of oil to put in the gearbox (900ml vs. 750ml). One enterprising forum member has created their own breather solution using a different port on the gearbox. | https://www.mgevs.com/threads/mg4-reduction-gearbox-oil-leak.7641/ https://www.mgevs.com/threads/mg4-oil-leak-poll-part-1.7786/ https://www.mgevs.com/threads/mg4-oil-leak-poll-part-2.7920/ | ||||||||||||||||||||
10 | LKA Dangerous | Lane Keeping Assist violently grabs the wheel and attempts to drive the car into the ditch. | 2-High | 3-Fix (Partial) | It seems as if this is the Emergency Lane Keeping (ELK) function, rather than the assist. Module updates are available to fix this and make it happen less often. LKA and ELK can be disabled on every drive, however will default to 'on' for each new drive if the car has the latest updates. For some reason - unclear - not everyone is seeing the fix work for them. | https://www.mgevs.com/threads/lane-keep-assist-feature.10124/ https://www.mgevs.com/threads/mg4-lane-keep-assist.9076/ https://www.mgevs.com/threads/my-mg4-trophy-is-dangerous-and-other-rants.8544/ | ||||||||||||||||||||
11 | Driver Monitoring Alert | Alert noise and flashing coffee cup when the driver is not looking straight ahead. | 2-High | 5-Resolved | This has been resolved through software updates to disable the whole system and for later cars the infrared driver monitoring system has been removed completely. The coffee cup is still present but no alarm. | https://www.mgevs.com/threads/mg4-trophy-focus-warning-alert-fix-incoming.7624/ | ||||||||||||||||||||
12 | Key Battery Failure | The battery in the MG key fails | 2-Low | 5-Resolved | The batteries are replaceable and the physical key can be used or the remote key via iSmart App. | https://www.mgevs.com/threads/dead-battery-in-key.9911/ https://www.mgevs.com/threads/mg4-smart-key-not-detected-alarm-going-off.9835/page-2 | ||||||||||||||||||||
13 | Boot Fails to Unlock | The boot doesn't unlock with the key. | 2-Low | 5-Resolved | Seems to be a software bug (may be addressed in more recent updates) and it fixes itself relatively quickly. | https://www.mgevs.com/threads/mg4-couldnt-open-the-boot.9826/ | ||||||||||||||||||||
14 | Power Limited | Car loses power after enthusiastic driving or lots of hard work on hills. | 3-Medium | 2-Confirmed | Believed to be characteristic of the motor/cooling system, which can overheat if pushed hard. Not clear if this is a fault or if MG are aware. | (A reviewer did a hill climb test and found the MG4 throttled the power back well before the competition) | ||||||||||||||||||||
15 | Emergency Braking | The car suddenly applies emergency brakes without warning or obvious cause. | 3-Medium | 2-Confirmed | Many manufacturers have this problem with false-positive AEB activation. Awaiting future module updates to improve the behaviour. Can be disabled before each journey. | https://www.mgevs.com/threads/sudden-automatic-braking-issue.10123/ https://www.mgevs.com/threads/front-collision-assist-issue.9447/ | ||||||||||||||||||||
16 | Airbag Warnings | The car declares a fault with the airbag system. | 3-Medium | 2-Confirmed | If persistent, probably due to a faultly airbag module, needs a dealer visit. Otherwise can be software issue. | https://www.mgevs.com/threads/anyone-else-been-plagued-by-airbag-warning-messages.8877/ | ||||||||||||||||||||
17 | Camera Failure | One or more cameras in the system fail. | 3-Medium | 2-Confirmed | A handful of examples so far, requiring camera module replacement. Long wait times to get parts. | https://www.mgevs.com/threads/forward-camera-not-working.10183/ https://www.mgevs.com/threads/mg4-front-camera-recalibration-issue.10051/ | ||||||||||||||||||||
18 | Infotainment Dark / Flashes | The infortainment screen doesn't start or freezes or it keeps cycling between screens or it says it requires activation. | 3-Medium | 3-Fix (Partial) | Most of the time holding down the home button for 10 seconds will cause it to reset and fix the problem. However, some people have had infotainment screen failures with long delays to get a replacement shipped in. | https://www.mgevs.com/threads/what-can-i-do-about-waiting-over-60-days-for-an-mg4-repair-advice-wanted.9839/ https://www.mgevs.com/threads/mg4-infotainment-cycling-between-screens.8771/ https://www.mgevs.com/threads/head-activate.10382/ https://www.mgevs.com/threads/mg4-flicking-screen.9749/ https://www.mgevs.com/threads/mg4-main-screen-stopped-working.7853/ | ||||||||||||||||||||
19 | Bluetooth Pairing | The car forgets the pairing with a phone and re-prompts to download contacts or otherwise re-connect. | 3-Medium | 3-Fix (Partial) | Recent infotainment updates have improved this for some people, but others - especially on some Android phones - report that it is still not working. | https://www.mgevs.com/threads/bluetooth-bug-pairing-constantly.9323/ | ||||||||||||||||||||
20 | Auto-hold Fault | The car declares that the auto-hold system is not working. | 3-Medium | 3-Fix Available | Sometimes due to infotainment unit needing a reboot but can also be due to insufficiently lubricated brake sliders / calipers causing this failure. If the latter, it needs attention to avoid long-term damage to the brakes. | https://www.mgevs.com/threads/thunk-from-rear-brakes.9557/ | ||||||||||||||||||||
21 | Door Button Failure | The exterior buttons on one or more door handles stop working, sometimes accompanied with (or preceeded by) the horn sounding. | 3-Medium | 4-Fix Available | Current diagnosis is replacement handles, which are very slow as they have to be shipped and then painted to the right colour. | https://www.mgevs.com/threads/mg4-new-fault-drivers-door-unlock-button.9251/ https://www.mgevs.com/threads/mg4-new-fault-horn-beeping-before-driving.9792/ | ||||||||||||||||||||
22 | 12V Battery Failure | The car is dead, will not respond to the key or startup, or if starts up complains about the 12V battery charge state. | 3-Medium | 4-Fix Available | Some 12V batteries are failing, need replacing, leisure batteries are best solution. Sometimes the terminals are loose (due to disconnection in ship transit?). Also caused by a bug for which there are updates available. | https://www.mgevs.com/threads/completely-dead-this-morning.10439/ https://www.mgevs.com/threads/information-on-the-12v-battery.10539/#post-178976 https://www.mgevs.com/threads/another-one-for-the-delivery-checklist-😗.10522/ https://www.mgevs.com/threads/not-charging-charger-not-unlocking.10349/ https://www.mgevs.com/threads/mg4-12volt-battery-not-charging.9916/ https://www.mgevs.com/threads/mg4-low-voltage-battery-chasing-system-fault.9204/ https://www.mgevs.com/threads/mg4-dead.8840/ https://www.mgevs.com/threads/airbag-email-whilst-on-drive-and-car-dead.9325/ | ||||||||||||||||||||
23 | Vibration at Speed | At higher speeds there's a strong vibration through the car / steering wheel. | 3-Medium | 4-Fix Available | Some early cars suffered from mis-shapen tyres and/or lack of wheel balancing. Requires replacement tyres and/or wheel balancing. No recent reports on later batches. | https://www.mgevs.com/threads/mg4-rumbling-and-vibration.8222/ https://www.mgevs.com/threads/steering-vibration.10292/ | ||||||||||||||||||||
24 | Heater Failure / Temp | The heater doesn't work at all, or requires a high temperature to blow any heat. | 3-Medium | 4-Fix Available | Seems to have been mainly a software bug, fixed on more recent builds. In a handful of cases the heater itself was faulty. | https://www.mgevs.com/threads/heating-problem.10250/ https://www.mgevs.com/threads/mg4-heating-working-but-wont-heat-up.8956/ | ||||||||||||||||||||
25 | Water Ingress / Draughts | Water is getting into the cabin from somewhere, leading to steamed up windows on the inside. | 3-Medium | 4-Fix Available | Some cases on early cars. Caused by one of: improper windscreen sealing, ill-fitting door seals, loose quarterlights without proper sealing. | https://www.mgevs.com/threads/damp-inside.10013/ https://www.mgevs.com/threads/mg4-water-ingress-soggy-headliner.9441/ https://www.mgevs.com/threads/mg4-drivers-right-side-wind-noise.9772/ https://www.mgevs.com/threads/wet-passenger-footwell.9317/ | ||||||||||||||||||||
26 | Sat Nav Activation | Sat Nav says it needs activation but doesn't work or no obvious way to do it | 3-Medium | 5-Resolved | Once a car is on recent updates, this is a relatively simple procedure, see the details in the forum thread. | https://www.mgevs.com/threads/mg4-trophy-sat-nav-activation.8206/ | ||||||||||||||||||||
27 | Seat Uncomfortable | There's a sharp point under the seat base that makes sitting uncomfortable for any length of time. | 3-Medium | 5-Resolved | Happened on at least one car, diagnosed as a misaligned seat ring. No recent reports of this. | https://www.mgevs.com/threads/seat-comfort.8175/ | ||||||||||||||||||||
28 | Misaligned Headlights | The headlights give poor illumination on dipped beam | 3-Medium | 5-Resolved | Some early cars had badly adjusted headlights. They are adjustable via screws easily accessible under the bonnet. More recent cars do not seem to have this issue. | https://www.mgevs.com/threads/mg4-trophy-headlamp-adjustment.8830/ | ||||||||||||||||||||
29 | Windows Dropping | On return to the car, a window is partially or fully open. | 4-Low | 1-Suspected | Suspected bug but possible this is user-error touching the sensitive window controls on exit from the car. Not confirmed as a bug. Quite a few people seeing it. | https://www.mgevs.com/threads/mg4-windows-dropping.9431/ | ||||||||||||||||||||
30 | Stuck Active Grille | One of the active grilles on a Trophy is stuck in the open position (e.g. when parked). | 4-Low | 1-Suspected | Never actually confirmed as a fault, though it may well be. | https://www.mgevs.com/threads/active-grille-shutters.9148/ https://www.mgevs.com/threads/front-auto-grille-opening.10119/ | ||||||||||||||||||||
31 | Broken Footrest | Driver's footrest breaks off without warning and not necessarily when a lot of pressure is applied. | 4-Low | 2-Confirmed | Has happened on a few customer's cars, unknown if this is resolved in more recent models or a risk for all. | https://www.mgevs.com/threads/already-broken.7615/ | ||||||||||||||||||||
32 | Noisy AC Pump | The AC pump makes a loud whine or drone, or sounds like a noisy fridge, clearly audible outside the car. | 4-Low | 2-Confirmed | Some cars suffer from this, some do not, cause unknown. | https://www.mgevs.com/threads/aircon-pump-squeak-chirp.9005/ | ||||||||||||||||||||
33 | Washer Jets Feeble | The washer jets don't reach the screen either at a standstill or at speed. | 4-Low | 2-Confirmed | Some early cars seem to have had this failure but not reported recently, suspect it is addressed on newer builds. | https://www.mgevs.com/threads/windscreen-washers.7931/ | ||||||||||||||||||||
34 | iSmart Connection | The iSmart App fails to connect to the car or connects with strange warnings. | 4-Low | 2-Confirmed | This can be due to MG server problems and also due to local phone network coverage: the car needs to have a signal (or be on Wifi for the Trophy) for the app to be able to connect. | https://www.mgevs.com/threads/remote-control-function-failed.10208/ https://www.mgevs.com/threads/ismart-security-warning.10361/ https://www.mgevs.com/threads/ismart-ac.7654/ https://www.mgevs.com/threads/mg4-ismart-loses-car-while-charging.9934/ | ||||||||||||||||||||
35 | Logo Peeling | The silver MG logo on the front is bubbling and losing its silver. | 4-Low | 2-Confirmed | A single example so far, probably a faulty batch | https://www.mgevs.com/threads/front-mg-logo-peeling.10341/ | ||||||||||||||||||||
36 | iSmart App AC Error | The iSmart App cannot turn on the cabin heating when the car is plugged in (even if not charging). | 4-Low | 2-Confirmed | A possible workaround is to initiate a charge, then set the AC, then cancel the charge | https://www.mgevs.com/threads/ismart-ac.7654/#post-172547 | ||||||||||||||||||||
37 | iSmart App Registration | When trying to register with the iSmart App, it fails. | 4-Low | 3-Fix (Partial) | This can happen either when the MG servers are down or if cars have been left off the list of VINs registered to the system. Some people struggling to get it to work at all. | https://www.mgevs.com/threads/ismart-connection-problem.10200/ https://www.mgevs.com/threads/smart-app-doesnt-recognise-the-bind.10237/ https://www.mgevs.com/threads/binding-issues-with-mgismart-app.9998/ | ||||||||||||||||||||
38 | Rusty Discs / Hubs | Brake discs are rusty and wheel hubs are rusty underneath the wheel trims | 4-Low | 3-Fix (Partial) | This is normal for mild steel discs which are not getting much use. Regularly do some hard braking to clean them up. Some people have had to have the discs replaced when the rust penetrates. | https://www.mgevs.com/threads/rusty-wheel-nuts.10488/ https://www.mgevs.com/threads/mg4-rear-brake-discs-corroded-3700-miles-in-bonus-other-issues.9635/ | ||||||||||||||||||||
39 | Dashboard Rattle | A rattle is heard from behind the dash - glovebox, vents or the infotainment unit. | 4-Low | 3-Fix Available | Generally fixed by removing the offending part of the dash and installing felt to stop rattles of plastic against plastic. More recent cars seem to have fewer rattles. | https://www.mgevs.com/threads/mg4-driver-side-dashboard-rattle-buzzing.9945/ https://www.mgevs.com/threads/mg4-glovebox-rattles-fixed.8301/ https://www.mgevs.com/threads/mg4-central-vibration-rattle.9730/ | ||||||||||||||||||||
40 | Radio cuts out | The radio just stops working after a while. | 4-Low | 4-Fix (Partial) | Recent infotainment updates seem to have improved this, though some people are still having problems. | https://www.mgevs.com/threads/radio-freeze.8121/ https://www.mgevs.com/threads/mg4-trophy-dab-radio-issues.9805/ https://www.mgevs.com/threads/dab-radio-intermittent-fault.9442/ | ||||||||||||||||||||
41 | Android Auto Problems | General Android Auto connection problems including annot get the MG to hear my voice on Android Auto | 4-Low | 4-Fix (Partial) | Some of the issues have fixes and workaround and others remain unresolved. Some are problems with specific phone+MG4 combinations. | https://www.mgevs.com/threads/mg4-android-auto-not-responding-or-hearing-my-voice.8607/ https://www.mgevs.com/threads/android-auto-stopped-working.10180/ https://www.mgevs.com/threads/radio-bluetooth-irritation.8237/ https://www.mgevs.com/threads/android-auto-not-working-well.9303/ https://www.mgevs.com/threads/android-auto-no-voice-guidance-from-google-maps-on-top-of-dab-fm-radio.9421/ | ||||||||||||||||||||
42 | ChargePort Light Failure | The lights around the charge port stop working (but charging still works). | 4-Low | 4-Fix Avaialble | Seems to fix itself after a while or may be a bad connection in the fusebox. | https://www.mgevs.com/threads/mg4-charging-port-lights-stopped-working.9348/ | ||||||||||||||||||||
43 | TPMS Errors | The car complains that one or more sensors are below the required pressure. | 4-Low | 4-Fix Available | Sometimes the TPMS sensors need resetting by reducing the pressure and then re-inflating. Sometimes this will be due to a faulty sensor that needs replacing. | https://www.mgevs.com/threads/tyre-pressure-settings-tpms-warnings.8430/#post-137633 https://www.mgevs.com/threads/tyre-pressure-tpms-fault.7577/ | ||||||||||||||||||||
44 | Loose Exterior Trim | Loose pieces of exterior trim, e.g. Trophy spoiler, side skirts, trim pieces near mirrors. | 4-Low | 5-Resolved | Some early cars suffered with this, seems better on more recent models. | https://www.mgevs.com/threads/draught-from-rear-on-trophy.9163/ | ||||||||||||||||||||
45 | Seat Trim Bad | The seat trim is crumpled or otherwise not properly stitched or aligned. | 4-Low | 5-Resolved | Some early cars suffered from this, newer ones seem much better. | https://www.mgevs.com/threads/mg4-seat-quality.7981/#post-158772 | ||||||||||||||||||||
46 | Apple CarPlay Problems | General Apple CarPlay problems | 4-Low | 5-Resolved | Most problems seem to be have been resolved through using the right cables and getting the latest software updates. | https://www.mgevs.com/threads/apple-car-play.10059/ https://www.mgevs.com/threads/best-iphone-cable.10154/ | ||||||||||||||||||||
47 | Sagging Undertray | Rear undertray sags down, may be small or a large gaping hole. Low severity if a small sag, but obviously higher for those with a gaping hole. | 4-Low | 6-Will Not Fix | Early cars particularly prevalent. MG confirmed a redesigned tray is in the works but no timescale and no plans to retrofit. Considered by many dealers as "characteristic of the car" and will not fix. | https://www.mgevs.com/threads/mg4-undertray-dip-bulge.7796/ https://www.mgevs.com/threads/mg4-undertray-poll.8596/ | ||||||||||||||||||||
48 | Settings Reset | Car does not retain drive mode and regen settings and starts with LKA enabled. | 4-Low | 6-Will Not Fix | Various settings reset for every drive believed due to NCAP and WLTP requirements (changes in 2022). | https://www.mgevs.com/threads/mg4-lane-assist-speed-assist-keep-resetting.9429// | ||||||||||||||||||||
49 | Condensation in Lights | The rear lights (in particular) fog up on winter mornings. | 4-Low | 6-Will Not Fix | This is confirmed as normal behaviour. The lights will clear as the day warms up. Not considered a fault although some people think it should be. | https://www.mgevs.com/threads/rear-lights-condensating-on-mg4-se.9529/ | ||||||||||||||||||||
50 | ||||||||||||||||||||||||||
51 | ||||||||||||||||||||||||||
52 | ||||||||||||||||||||||||||
53 | ||||||||||||||||||||||||||
54 | ||||||||||||||||||||||||||
55 | ||||||||||||||||||||||||||
56 | ||||||||||||||||||||||||||
57 | ||||||||||||||||||||||||||
58 | ||||||||||||||||||||||||||
59 | ||||||||||||||||||||||||||
60 | ||||||||||||||||||||||||||
61 | ||||||||||||||||||||||||||
62 | ||||||||||||||||||||||||||
63 | ||||||||||||||||||||||||||
64 | ||||||||||||||||||||||||||
65 | ||||||||||||||||||||||||||
66 | ||||||||||||||||||||||||||
67 | ||||||||||||||||||||||||||
68 | ||||||||||||||||||||||||||
69 | ||||||||||||||||||||||||||
70 | ||||||||||||||||||||||||||
71 | ||||||||||||||||||||||||||
72 | ||||||||||||||||||||||||||
73 | ||||||||||||||||||||||||||
74 | ||||||||||||||||||||||||||
75 | ||||||||||||||||||||||||||
76 | ||||||||||||||||||||||||||
77 | ||||||||||||||||||||||||||
78 | ||||||||||||||||||||||||||
79 | ||||||||||||||||||||||||||
80 | ||||||||||||||||||||||||||
81 | ||||||||||||||||||||||||||
82 | ||||||||||||||||||||||||||
83 | ||||||||||||||||||||||||||
84 | ||||||||||||||||||||||||||
85 | ||||||||||||||||||||||||||
86 | ||||||||||||||||||||||||||
87 | ||||||||||||||||||||||||||
88 | ||||||||||||||||||||||||||
89 | ||||||||||||||||||||||||||
90 | ||||||||||||||||||||||||||
91 | ||||||||||||||||||||||||||
92 | ||||||||||||||||||||||||||
93 | ||||||||||||||||||||||||||
94 | ||||||||||||||||||||||||||
95 | ||||||||||||||||||||||||||
96 | ||||||||||||||||||||||||||
97 | ||||||||||||||||||||||||||
98 | ||||||||||||||||||||||||||
99 | ||||||||||||||||||||||||||
100 |