Reliability Guide
BMW M4 Problems by Year
The M4 is the coupe and convertible sister car to the modern M3, introduced when BMW split its naming conventions. Positioned as an aggressive, highly tuneable sports coupe, it offers devastating straight-line speed and sharp track-ready handling. Many UK cars have seen aftermarket modifications, track days, and aggressive driving, meaning buyers must be wary of hidden damage, crash repairs, and big consumable bills (brakes and tyres). It suits buyers who want the ultimate BMW coupe performance and aren't afraid of high maintenance costs.
Select a year below to see the specific problems affecting that model year, with estimated repair costs and severity ratings.
4
Year Periods
4
Known Issues
1
Serious Faults
3
Moderate Issues
Select a Year Period
Browse M4 in our Directory
View MOT history, registration data, and reliability scores for the BMW M4.
View M4 DirectoryBuying Tips for the BMW M4
- ✓Check for signs of aftermarket tuning (bootmod3, piggyback ECUs); tuned cars place immense stress on the infamous S55 crank hub.
- ✓Inspect the carbon-ceramic brakes (if optioned; indicated by gold calipers) for chipping on the rotor edges; replacement discs cost roughly £4,000 per axle.
- ✓Verify the front radiators and oil coolers for stone damage; the large grilles leave them exposed to debris on UK motorways.
- ✓Look closely at the panel gaps and paint finish; M4s are frequently involved in accidents, so check for hidden crash damage.
- ✓Test the 7-speed DCT gearbox; it should shift with brutal speed in the highest setting, but check for leaks from the transmission pan.
- ✓Ensure the differential bushes aren't completely worn out, which causes a heavy clunk from the rear end when accelerating hard.