KNOWN FAULT · BMW

N63 / S63 oil consumption and chain

Sources are not verified in real time and no entry confirms that your car is affected.

Engine / equipment: N63 4.4 V8 twin-turbo (550i, 650i, 750i, X5/X6 50i, M550i) and its M version, the S63 (M5, M6, M8, X5 M, X6 M)
Period mentioned: 2008–2026 (most cases on 2008–2013 N63)
Symptoms: High oil consumption, blue or white smoke on start-up, misfires, chain rattle and a battery that drains.
Possible cause described: The turbos sit inside the engine's V and the heat hardens valve stem seals, hoses and plastic chain guides. In 2014 BMW launched the N63 “Customer Care Package” (injectors, chain, seals, battery). The 2012 N63TU reduced oil consumption without eliminating it. On the S63, rod bearings are also worth monitoring.
Check for the garage: Oil consumption test, confirm by VIN that the Customer Care Package was done and listen for the chain on a cold start.
Cost cited in the source: Valve stem seals: approx. €6,500–8,300 (converted from dollars); chain: several thousand eurosA rough figure from the original database, not an up-to-date quote.

Sources from the original database

Anonymous answer, no personal data.

How much does it cost to repair this fault?

Valve stem seals: approx. €6,500–8,300 (converted from dollars); chain: several thousand euros

A rough figure from the original database, not an up-to-date quote.

How is it checked?

Oil consumption test, confirm by VIN that the Customer Care Package was done and listen for the chain on a cold start.

What are the symptoms?

High oil consumption, blue or white smoke on start-up, misfires, chain rattle and a battery that drains.

Which cars and years does it affect?

Brands: BMW
Engine / equipment: N63 4.4 V8 twin-turbo (550i, 650i, 750i, X5/X6 50i, M550i) and its M version, the S63 (M5, M6, M8, X5 M, X6 M)
Period mentioned: 2008–2026 (most cases on 2008–2013 N63)

Find garages near you and, before you say yes, check whether the quote is reasonable.

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