BMW B47
vs B48
B47 70–73/100 · B48 79–82/100
On our scores the BMW B48 is the safer buy: 79–82/100 against 70–73/100 for the BMW B47.
Same car, either engine
The F30 was sold with both.
73/100
8 confirmed issues
Best-known problemEGR cooler leak (fire risk) · from 80k km · up to €1,800
79/100
12 confirmed issues
Best-known problemOil filter housing coolant leak · from 80k km · €700–1,800
The F20 was sold with both.
72/100
8 confirmed issues
Best-known problemEGR cooler leak · from 80k km · up to €1,600
70/100
8 confirmed issues
Best-known problemEGR cooler leak (fire risk) · from 60k km · up to €1,800
82/100
13 confirmed issues
Best-known problemWater pump failure · from 112k km · €300–900
Version by version
BMW B47
73/100
8 confirmed issues
Best-known problemEGR cooler leak (fire risk) · from 80k km · up to €1,800
72/100
8 confirmed issues
Best-known problemEGR cooler leak · from 80k km · up to €1,600
70/100
8 confirmed issues
Best-known problemEGR cooler leak (fire risk) · from 60k km · up to €1,800
BMW B48
82/100
13 confirmed issues
Best-known problemWater pump failure · from 112k km · €300–900
79/100
12 confirmed issues
Best-known problemOil filter housing coolant leak · from 80k km · €700–1,800
The problems they share
Reported on both
- Timing chain stretch / guide wear
- Thermostat / temperature sensor failure
- Intercooler failure or leak
- Piston ringland failure
- ECU fault or wiring issue
- Excessive oil consumption
Only on the BMW B47
- EGR cooler leak (fire risk)
- Turbocharger failure
- DPF clogging / regeneration failure
- Dual-mass flywheel / clutch wear
- EGR valve / swirl flap clogging
- EGR cooler leak
- Engine sensor failure
Only on the BMW B48
- Water pump failure
- Head gasket failure
- Wastegate / boost actuator failure
- High-pressure fuel pump failure
- Oil leak from seals or gaskets
- Fuel injector failure
- Variable valve timing solenoid/actuator failure
- Oil filter housing coolant leak
- Oil pump wear / sludge buildup