2018 BMW 230i B48B20M0 (F22)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• Oil leaks around valve cover gasket
• Coolant thermostat failure
• High-pressure fuel pump wear

First checks

• Check oil leaks around turbo and valve cover
• Inspect coolant system for leaks
• Verify software updates

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

• The 2018 BMW 230i uses the modular B48 engine introduced since 2015, with slight tuning updates over prior years.
• Available markets include North America, Europe, and selected regions; engine output and transmission type may vary by country.