KNOWN FAULT · Audi

4.0 TFSI turbo oil starvation

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

Engine / equipment: 4.0 TFSI V8 twin-turbo (S6, S7, RS6 and RS7 C7, S8 D4)
Period mentioned: 2012–2018
Symptoms: Hard starting, damaged turbo (smoke, power loss), oil consumption and misfires.
Possible cause described: The mesh strainer in the turbo oil feed, inside the engine's V, can clog and starve the turbos of oil. Audi issued a bulletin (2018, revised in 2021) with an optimised strainer and a check valve. Early engines also consume oil.
Check for the garage: Confirm whether the turbo oil strainer bulletin was applied, measure oil pressure and run an oil consumption test.
Cost cited in the source: Turbos: 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?

Turbos: several thousand euros

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

How is it checked?

Confirm whether the turbo oil strainer bulletin was applied, measure oil pressure and run an oil consumption test.

What are the symptoms?

Hard starting, damaged turbo (smoke, power loss), oil consumption and misfires.

Which cars and years does it affect?

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

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