Fault File
All models / All cars / Coupés, convertibles & GT / BMW i4

BMW i4

All generations and engines together · 1,148 MOT tests in the 2025 data

How this model wears

BMW i4Class average, all tracked models

Known issues

Measured

Computed from DVSA MOT results, all of Great Britain, 2025. Nothing here is opinion.

What testers flag

Share of tests where each item was recorded. The dark tick is the class average across all tracked models; bars are scaled within each group.

Faults with the car itself

The rows that judge the model rather than its keeper. 1,148 tests in this band.

A wheel badly distorted or wear between wheel and hub at spigot mounting
Advisory
1.0%class 0.4%
Excessive fluctuation in brake effort through each wheel revolution.
Advisory
0.3%class 0.3%
A wheel with a loose or missing wheel nut, bolt or stud
Fail
0.3%class 0.1%
A shock absorber damaged to the extent that it does not function or showing signs of severe leakage
Advisory
0.3%class 2.1%

Wear, upkeep and luck

Tyres, pads and stone chips say more about how the car was driven and maintained than about how it was built.

Tyre tread depth not in accordance with the requirements
Advisory
33.2%class 18.8%
A tyre seriously damaged
Advisory
9.8%class 13.1%
A tyre cords visible or damaged
Fail
5.5%class 1.3%
A tyre seriously damaged
Fail
5.4%class 2.3%
Nail in tyre
Advisory
2.4%class 1.7%
Tyre tread depth not in accordance with the requirements
Fail
2.1%class 2.3%
Child Seat fitted not allowing full inspection of adult belt
Advisory
1.7%class 2.1%
The aim of a headlamp is not within limits laid down in the requirements
Fail
1.7%class 1.2%

Unconfirmed issues

Reported

Owner folklore from forums and the motoring press. Most of it never shows up in an MOT, which is why this section exists at all.

Rapid, uneven rear tyre wear

Partly in the MOT data

Owners repeatedly report the rear tyres, especially on the inside edge, wearing out far quicker than you'd expect for the mileage, some quoting as little as 3,000-20,000 miles on original rubber. It's put down to the factory negative camber and toe settings plus the instant torque and regen braking loading the rears harder than a petrol car would. This lines up with the measured wheels fault for this segment: the data shows a real wheel-related pattern, and the folklore explanation (aggressive alignment, not a manufacturing defect) fits it well.

Reported from as early as a few thousand miles · sources: BMW i4 Forum (i4talk), BIMMERPOST i Forums

Charging flap jams shut or won't latch

Confirmed pattern

The motorised charging port flap can stick closed, refuse to pop, or throw a false "charging flap is open" warning while driving. It's common enough that BMW has a documented service procedure for it (SIB 41 05 25), involving a specific push-and-lock sequence on the flap; if that doesn't clear it, dealers have replaced the whole charging door mechanism.

Can appear at any age · sources: BMW i4 Forum (i4talk), BIMMERPOST i Forums, BMW service bulletin SIB 41 05 25

High-voltage battery recall (fire risk)

Confirmed pattern

BMW has run UK safety recalls covering i4 cars built with incorrectly produced high-voltage battery cell modules, where a manufacturing fault in the cell terminals can lead to overheating and a fire risk. A separate recall has also covered a seatbelt retractor defect. Both are free dealer campaigns, but only if the car has actually had the work done.

Free recall repair at any BMW dealer · sources: Vehicle Recall UK, BMW Group official recall database

12V battery drain and "unusual discharge" warnings

Emerging

Several owners report the small 12V auxiliary battery draining flat while the car sits, sometimes with an on-screen warning that convenience functions are being disabled to protect starting ability. BMW has pushed software updates aimed at fixing modules not sleeping properly, but persistent cases have needed a dealer visit to check for parasitic draw or, in some cases, a replacement 12V battery. Not officially acknowledged as a design fault, but it comes up often enough on owner forums to take seriously.

Reported at various ages, more common if left unplugged for long periods · sources: BMW i4 Forum (i4talk), owner community reports

iDrive 8 screen freezing or rebooting

Emerging

The curved iDrive 8 display can freeze mid-drive or drop to a black screen showing just the BMW logo, taking sat-nav, climate and the reversing camera down with it until it reboots or the car is left locked for a few minutes. It's most associated with early software builds on 2022-23 cars, and a full software update usually calms it down, but it isn't a formal recall, just a known annoyance discussed regularly on owner forums.

Most reported on early build software · sources: BMW i4 Forum (i4talk), BimmerFest BMW Forums

Viewing one? Ask this

Built from the two sections above.

Check all four tyres, especially the inside edges of the rears, for feathering or a wear step. Heavy inside-edge wear well before the tyre's rated mileage means an alignment check and a tyre budget, not a fault to reject the car over.
Open and close the charging flap a few times at the viewing. Any sticking, slow action or a false 'flap open' warning on the dash points to the known charging door fault.
Run the registration through BMW's official recall checker before you view. An open HV battery or seatbelt recall with no repair date logged means unresolved safety work outstanding.
Cycle through the iDrive menus, sat-nav and reversing camera during the test drive. Any freeze, black screen or unexpected reboot suggests the car is still on old, bug-prone software.
Ask how the car has been charged and stored, and check for any 12V-related warnings in the history. A car regularly left unplugged for weeks is more likely to have hit the 'unusual discharge' warning or needed a new 12V battery.
Look over the alloys for kerb damage, especially on M50 or larger-wheel cars. Low-profile tyres and big rims mark easily; heavy scuffing suggests careless ownership generally.
Check the service history for any software update visits or charging door work. Repeated visits for the same complaint suggest the underlying cause hasn't actually been fixed.

Others in its class

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