BMW’s N47 and N57 engines have some pretty serious and potentially catastrophic common issues you should know about. So here’s everything you need to know, including the service schedule!
- Maintenance schedule
- Oil change every 5-10k miles
- Air filters every 2-3 services
- Zf8hp after 60k miles /8 years – less if you tow
- Timing chain
- At the rear of the engine so engine out to replace
- Regular oil changes help, DONT FOLLOW BMW RECOMMENDED
- Around 100K miles
- EGR clogs, either clean or remove (do at your own risk)
- DPF – long journeys needed regularly to do DPF regenerate
- Glow plugs – fragile, careful when extracting. Could be module instead
- Crankshaft pulley/damper – apparently cracks and splits at 100k miles
- Injector seal/injectors
- Swirl flaps – brass rod fails
- Sensors – we have personal experience with this. Issues can be masked, no error codes thrown. Massive pain.
- Turbos can fail at higher mileages
