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BMW F91 M8 common problems
2020–2025 · M8 / Competition (coupe, convertible, Gran Coupe) (S63 V8). The known weak spots of the engines used in the F91, with sources, plus the topics that come up most in BMW's service bulletins and NHTSA recalls for this chassis.
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S63 engine
M8 / Competition (coupe, convertible, Gran Coupe) (2020–2025) · S63 bulletins →
Oil consumption and valve stem seals
BMW's valve seal replacement bulletin covers the S63 in the X5 M and X6 M as well as the N63.
Sources: BMW SIB: N63 and S63 valve seal replacement (NHTSA)
Rod bearings, coils and injectors
Rod bearing wear is discussed on early S63s; misfires from coils and injectors and turbo coolant leaks also show up.
BMW bulletins on file for the F91:
- SIB 01 17 24 Fuel injectors failure Fuel injectors failure on N63/S63 engines (2015–2021); the fix is replacing the affected part. Warranty extension · Sep 2025
- SIB 17 03 24 Fuel injectors leak Fuel injectors leak on N63/S63 engines (2018–2022); BMW repairs affected cars free under a service campaign. Service campaign · Jun 2024
- SIB 17 02 22 Coolant leak Coolant leak on N63/S63 engines (2006–2023); BMW explains the cause and the approved repair. Service bulletin · Sep 2022
Most frequent bulletin topics 127 bulletins
| Topic | Bulletins | Examples |
|---|---|---|
| Steering | 5 | SIB 66 24 19, SIB 36 01 21 |
| Key fob | 4 | SIB 61 04 21, SIB 61 22 19 |
| Radio | 4 | SIB 65 19 22, SIB 65 11 21 |
| Seat | 3 | SIB 52 03 21, SIB 52 07 20 |
| Central display | 3 | SIB 61 05 24, SIB 65 24 22 |
| Instrument cluster | 3 | SIB 62 02 23, SIB 65 08 20 |
| Fuel tank | 2 | SIB 16 04 20, SIB 16 01 23 |
| Battery | 2 | SIB 61 13 05, SIB 61 13 19 |
BMW service bulletins and warranty extensions filed with NHTSA that list the F91, grouped by topic. A bulletin tells technicians how to diagnose and fix a known issue; it doesn't mean every car has the problem.
NHTSA recalls by component 5
- digital key ECU software coding · 1 recall23V099
- rearview camera software · 1 recall21V096
- integrated brake system · 1 recall21V062
- pretensioner · 1 recall20V164
- wiring · 1 recall19V883
Matched from NHTSA's public recall file by model and model year. Recall repairs are free; check a VIN.
BMW warranty extensions that list the F91
- SIB 01 17 24 Fuel injectors failure Fuel injectors failure on N63/S63 engines (2015–2021); the fix is replacing the affected part. Warranty extension · Sep 2025
- SIB 01 08 21 Fuel tank leak check warranty extension Fuel tank leak check warranty extension on BMW G01/G02/G05/G06 and other models (2020); BMW extended the warranty on this part for eligible cars. Warranty extension · Dec 2024
- SIB 32 02 23 Steering warranty extension Steering warranty extension on BMW G05/G06/G07/G11 and other models (2015–2024); BMW extended the warranty on this part for eligible cars. Service bulletin · Jan 2024
If a car qualifies, the listed repair may be free. Check eligibility for the VIN with a BMW center.
Sources: BMW service bulletins and recalls filed with NHTSA (public data) and the specialist and owner write-ups linked above. Not affiliated with BMW.