2022 BMW 4 Series 430i B48B20M0 (G22 (Coupe), G23 (Convertible))

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• Occasional high-pressure fuel pump issues reported in some markets
• Oil consumption can vary depending on driving conditions

First checks

• Inspect turbocharger oil supply lines for leaks
• Check VANOS timing components for rattling noise
• Verify software version for emissions compliance

Vor dem Teiletausch

• 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 430i in 2022 uses the B48 engine across most global markets with minor variations related to emissions and tuning.
• Manual transmission availability is limited to select markets like Europe; many global markets offer only automatic.