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BMW G22 4 Series coupe, convertible and Gran Coupe common problems
2021–present · 430i / xDrive, M440i / xDrive (B46/B48, B58). The known weak spots of the engines used in the G22, with sources, plus the topics that come up most in BMW's service bulletins and NHTSA recalls for this chassis.
Last updated
B46/B48 engine
430i / xDrive (2021–present) · B46/B48 bulletins →
Oil filter housing and coolant leaks
The oil filter housing / oil cooler gasket and cooling system leaks are the most common repairs on these modular four-cylinders.
BMW bulletins on file for the G22:
- SIB 11 05 21 Water pump cracking Water pump cracking on BMW G05/G06/G07/G20 and other models (2017–2022); BMW repairs affected cars free under a service campaign. Service campaign · Dec 2024
- SIB 11 10 25 Oil filter housing leak Oil filter housing leak on BMW G02/G20/G22/G23 and other models (2025); BMW explains the cause and the approved repair. Service bulletin · Dec 2025
- SIB 64 06 24 Coolant changeover valve leak Coolant changeover valve leak on Electric engines (2023–2024); BMW gives an inspection and repair procedure. Service campaign · Jul 2024
B58 / B48 oil filter housing (coolant leak): prices →
Fuel tank vent (purge) valve
BMW extended coverage on the EVAP purge valve to 15 years/150,000 miles on many cars. A failed valve sets check-engine codes and can cause rough idle after refuelling.
BMW bulletins on file for the G22:
- SIB 01 01 26 EVAP system warranty extension EVAP system warranty extension on B46/B48/B58 engines (2020–2025); BMW extended the warranty on this part for eligible cars. Warranty extension · May 2026
B58 engine
M440i / xDrive (2021–present) · B58 bulletins →
Oil filter housing, valve cover/PCV and coolant leaks
The B58's best-known repairs: oil filter housing gasket leaks, the valve cover with built-in PCV, and coolant leaks from the water pump or expansion tank.
BMW bulletins on file for the G22:
- SIB 11 05 21 Water pump cracking Water pump cracking on BMW G05/G06/G07/G20 and other models (2017–2022); BMW repairs affected cars free under a service campaign. Service campaign · Dec 2024
- SIB 06 13 26 Auxiliary Water Pump Return Auxiliary Water Pump Return on BMW G01/G20/G22/G23 and other models (2024); BMW explains the cause and the approved repair. Other communication · Feb 2026
- SIB 11 10 25 Oil filter housing leak Oil filter housing leak on BMW G02/G20/G22/G23 and other models (2025); BMW explains the cause and the approved repair. Service bulletin · Dec 2025
B58 / B48 oil filter housing (coolant leak): prices → B58 valve cover / PCV failure: prices → B58 water pump (coolant pump): prices →
Fuel tank vent (purge) valve
Covered by BMW's 15-year/150,000-mile EVAP purge valve extension on many cars.
BMW bulletins on file for the G22:
- SIB 01 01 26 EVAP system warranty extension EVAP system warranty extension on B46/B48/B58 engines (2020–2025); BMW extended the warranty on this part for eligible cars. Warranty extension · May 2026
Most frequent bulletin topics 227 bulletins
| Topic | Bulletins | Examples |
|---|---|---|
| Central display | 9 | SIB 65 20 25, SIB 65 20 26 |
| Battery | 7 | SIB 61 18 24, SIB 17 01 24 |
| Instrument cluster | 5 | SIB 12 05 23, SIB 61 20 23 |
| Navigation | 5 | SIB 65 28 25, SIB 65 21 24 |
| Key fob | 4 | SIB 61 04 21, SIB 65 17 24 |
| Steering squeak | 4 | SIB 32 01 23, SIB 31 02 23 |
| Trunk lid | 4 | SIB 51 07 25, SIB 51 18 23 |
| Door | 4 | SIB 41 05 25, SIB 51 04 23 |
BMW service bulletins and warranty extensions filed with NHTSA that list the G22, 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 13
- power distribution module/ipdm · 1 recall25V643
- starter-generator · 1 recall25V202
- cylinder head cover · 1 recall23V863
- integrated transmission control unit · 1 recall23V821
- receiver audio module (ram) ECU · 1 recall23V584
- body domain controller (bdc) ECU · 1 recall23V118
- roof function control unit software · 1 recall22V267
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 G22
- SIB 01 01 26 EVAP system warranty extension EVAP system warranty extension on B46/B48/B58 engines (2020–2025); BMW extended the warranty on this part for eligible cars. Warranty extension · May 2026
- SIB 51 12 23 Body fault codes Body fault codes on BMW G05/G06/G07/G20 and other models (2020–2025); BMW extended coverage for eligible cars. Warranty extension · Jul 2025
- SIB 66 07 25 Electrical system warranty extension Electrical system warranty extension on BMW G05/G06/G07/G09 and other models (2024); BMW extended the warranty on this part for eligible cars. Service bulletin · May 2025
- SIB 01 14 23 Crankcase vent valve (PCV) warranty extension Crankcase vent valve (PCV) warranty extension on BMW G01/G02/G11/G12 and other models (2016–2021); BMW extended the warranty on this part for eligible cars. Service bulletin · Nov 2023
If a car qualifies, the listed repair may be free. Check eligibility for the VIN with a BMW center.
Repair prices for these engines
B58 / B48 oil filter housing (coolant leak) B58 valve cover / PCV failure B58 / B48 fuel tank vent valve (purge valve) B58 coolant expansion tank (G05 X5 40i, high- or low-temp) B58 heat management module (thermostat) replacement B58 oil pump replacement B58 water pump (coolant pump)
Prices on these pages are for other chassis with the same engine.
Sources: BMW service bulletins and recalls filed with NHTSA (public data) and the specialist and owner write-ups linked above. Not affiliated with BMW.