2015 BMW 650i N63B44T3 (F12 (Convertible), F13 (Coupe))

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• N63 engine issues including high oil consumption, timing chain wear, and coolant leaks
• High-pressure fuel pump failures
• Cooling system component failures in hot climates

First checks

• Check for oil leaks around valve cover gaskets
• Monitor oil level frequently due to consumption trends
• Inspect turbocharger mounts and intake boots for cracks

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 650i for 2015 retained the N63B44T3 in most global markets except the US, where it was replaced by the updated N63B44T4 starting mid-2015 model year.
• No manual gearbox available; this model was offered only with the 8-speed automatic.
• Oil capacity includes service-fill volume accounting for oil filter replacement.