PCV system / exhaust gas recirculation fault
Often reportedThe crankcase ventilation system (PCV/SFI valve) can clog or fail, causing excessive pressure or vacuum in the system, leading to oil consumption, leaks, or rough running.
Engine Bay
When buying a used Audi A6 2.0 TFSI 2015 (C7 / facelift), the most frequently mentioned issue is: PCV system / exhaust gas recirculation fault. Also, Timing Chain Tensioner Wear or Failure is commonly reported.
Engine varies by trim; verify the engine code on the listing.
Listed from most frequently reported, each with its source.
The crankcase ventilation system (PCV/SFI valve) can clog or fail, causing excessive pressure or vacuum in the system, leading to oil consumption, leaks, or rough running.
Engine Bay
Metallic noises and misfires when cold are reported, caused by wear or failure of the timing chain tensioner. If the tensioner fails, the chain can slip, risking serious engine damage (piston/valve collision).
Timing chain
Some 2.0 TFSI engines report turbo abnormalities, power loss, or unusual noises due to failures in the turbo housing, bearings, or control components (wastegate).
Turbo
Same trim, different year
We only publish claims we can verify. Cards come from Difetti fault records matched to this vehicle on brand, fuel, engine and generation.