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BMW G45 X3 common problems
2025–present · 30 xDrive, M50 xDrive (B46/B48, B58). The known weak spots of the engines used in the G45, 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
30 xDrive (2025–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 G45:
- 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 17 06 24 Coolant line service campaign Coolant line service campaign on B46/B48/B58 engines (2025); BMW repairs affected cars free under a service campaign. Service campaign · Nov 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 G45:
- SIB 01 03 24 EVAP system warranty extension EVAP system warranty extension on BMW G01/G02/G05/G06 and other models (2017–2025); BMW extended the warranty on this part for eligible cars. Warranty extension · Jun 2026
B58 engine
M50 xDrive (2025–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 G45:
- 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 17 06 24 Coolant line service campaign Coolant line service campaign on B46/B48/B58 engines (2025); BMW repairs affected cars free under a service campaign. Service campaign · Nov 2024
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 G45:
- SIB 01 03 24 EVAP system warranty extension EVAP system warranty extension on BMW G01/G02/G05/G06 and other models (2017–2025); BMW extended the warranty on this part for eligible cars. Warranty extension · Jun 2026
Most frequent bulletin topics 96 bulletins
| Topic | Bulletins | Examples |
|---|---|---|
| Steering | 4 | SIB 32 09 25, SIB 32 02 26 |
| Door | 4 | SIB 51 10 26, SIB 51 22 24 |
| Body | 3 | SIB 51 11 25, SIB 51 02 26 |
| Central display | 3 | SIB 65 20 25, SIB 65 07 26 |
| Wipers | 2 | SIB 61 12 26, SIB 61 09 25 |
| Unknown or other | 2 | SIB 65 01 26, SIB 65 01 25 |
| Seat | 2 | SIB 52 03 26, SIB 52 05 25 |
| Camera | 2 | SIB 51 08 24, SIB 66 09 25 |
BMW service bulletins and warranty extensions filed with NHTSA that list the G45, 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 9
- steering spindle · 1 recall26V524
- steering system software · 1 recall25V857
- front brake disc · 1 recall25V247
- starter-generator · 1 recall25V202
- rear brake hose · 1 recall25V154
- electrical connection between battery and starter · 1 recall25V109
- left swivel bearing · 1 recall24V909
- head curtain air bag · 1 recall24V856
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 G45
- SIB 01 03 24 EVAP system warranty extension EVAP system warranty extension on BMW G01/G02/G05/G06 and other models (2017–2025); BMW extended the warranty on this part for eligible cars. Warranty extension · Jun 2026
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.