2014 BMW 335 N55B30/N54B30 (F30/F31)
F30/F31 / Sedan and Touring / Global (Europe, North America, Asia, Australia)
N55B30N54B30Exact year/trim recordGold
Engine identity
Oils and fluids
Service and parts data
Common and chronic problems
- High-pressure fuel pump failures (mostly N54 engine)
- Wastegate rattle (N55 engines)
- Oil leaks from valve cover gasket
First checks
- Inspect turbocharger and boost pressure systems
- Check VANOS and fuel injectors for faults
- Verify condition of cooling system components
Before replacing parts
- Save fault codes and freeze-frame data before clearing anything.
- Check engine oil, coolant and transmission fluid using the correct temperature and service procedure.
- Verify power, ground, connectors, hoses, leaks and live data before replacing expensive parts.
Important notes
- N54 twin-turbo was mostly replaced by N55 single twin-scroll turbo in 2013 model year globally but may appear in some specific markets.
- Technical details may vary slightly by market due to emissions and equipment regulations.