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The Audi S4 B8.5 is a high-performance luxury sports sedan (or Avant) for enthusiasts seeking a powerful daily driver with Quattro all-wheel drive and premium features. It offers a compelling blend of speed, sophistication, and year-round usability.
Audi S4 offers sourced from ca, ua, us. A total of 37 vehicles available for comparison on Car Spy.
Audi S4 IV (B8) Restyling price range: $1,936–$22,500 with an average mileage of 187K km. Prices update automatically from all tracked markets.
S tronic (DSG) Mechatronics Failure
Carbon Buildup on Intake Valves
PCV Valve (Oil Separator) Failure
Water Pump / Thermostat Housing Leaks

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Found 15 cars
S tronic (DSG) Mechatronics Failure
Carbon Buildup on Intake Valves
PCV Valve (Oil Separator) Failure
Water Pump / Thermostat Housing Leaks
Always get a pre-purchase inspection (PPI) from an Audi specialist, paying close attention to the engine and transmission.
Thoroughly check the service history for regular maintenance, especially transmission fluid changes and carbon cleaning records.
Test drive the car extensively, paying attention to any abnormal shifts, jerking, or hesitation from the S tronic transmission.
Listen for any unusual engine noises, especially during cold starts, which could indicate timing chain issues (though less common in B8.5).
Inspect for oil or coolant leaks around the engine bay, particularly near the water pump and PCV valve.