2022 BMW M340i B58B30M1 (G20)
G20 / Sedan / Global (USA, Europe, Asia, select markets with variations)
B58B30M1Registro exacto de año/versiónGold
Engine identity
Oils and fluids
Service and parts data
Common and chronic problems
- Coolant leaks in water pump housing
- Turbocharger wastegate rattling (rare)
- Valve cover gasket oil leaks
First checks
- Check for oil leaks around valve cover and oil filter housing
- Inspect cooling system hoses and water pump
- Evaluate turbocharger boost response and noises
Antes de cambiar piezas
- 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
- M340i in some markets features a 48V mild-hybrid starter generator improving fuel economy and reduce turbo lag.
- Manual transmission versions are less common and mostly available in Europe; automatic transmission dominates global sales.
- BMW markets the G20 M340i as the performance trim of the 3 Series with sport-tuned chassis and enhanced dynamics.