2015–2020 BMW M3
Browse our directory of 2015–2020 BMW M3 vehicles. Access instant MOT history reports, tax status, and reliability insights for any registration listed below.
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Common Problems & Reliability
The 2015–2020 BMW M3 has 2 known issues. 1 of these are classified as serious faults that could be expensive to repair. 1 are moderate concerns worth inspecting before purchase.
Crank Hub Slip / Timing Risk
SeriousHighly publicised on tuned S55 cars, crank-hub slip can throw engine timing out and destroy the valvetrain. Stock cars are less vulnerable, but mapped examples deserve extra caution.
Symptoms: Sudden misfire after a hard pull, Engine light and loss of power after overrun or kickdown
Est. repair cost: £2,000–£8,000
Coolant Loss / Charge Cooling Leaks
ModerateTurbo M3s can develop small coolant leaks around expansion tanks, auxiliary coolers, or charge-cooling hardware. They are often minor at first, but repeated top-ups are not normal.
Symptoms: Sweet smell after a spirited drive, Low coolant warnings without obvious overheating
Est. repair cost: £150–£900
Buying Tips for the 2015–2020 BMW M3
- ✓On E46 and E90/E92 models, demand proof that the rod bearings have been replaced; failure to do so will result in a destroyed engine.
- ✓On the F80 generation (S55 engine), check if the crank hub has been upgraded or pinned, especially if the car has an aftermarket tune.
- ✓Inspect the boot floor on E46 models for the notorious subframe mounting cracks; this is a guaranteed failure point requiring structural welding.
- ✓Check the electronic damper control (EDC) suspension for leaks; replacement M-specific shock absorbers are eye-wateringly expensive.
- ✓Verify the 1,200-mile running-in service was completed precisely on time, as BMW can deny warranty or goodwill claims if it was missed.
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