2015 BMW 320i N20B20/B48B20O0 (F30)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• High-pressure fuel pump failure (N20 engine)
• Timing chain issues in early N20 engines
• Cooling system water pump failures

First checks

• Verify condition of timing chain and related components
• Inspect cooling system hoses and water pump
• Check for oil leaks around turbocharger

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

• Market variations exist, with Europe and Asia commonly having the N20 engine early in 2015, while some markets received the updated B48 engine later that year.
• Service-fill oil capacity includes filter change; refer to BMW workshop documentation for exact procedures.