Audi , A6 , C7 Common Issues

Name: Audi, A6, C7
Brand: Audi
Rating: 7.6923076923076925 (13 reviews)

Oil consumption (leading to excessive blue smoke)
Faulty Mass Airflow Sensor (Mafs) - causes rough engine performance
Transmission solenoid pack failure - results in slipping or no shifting
Rear differential leakage - may cause noise and vibration
Sunroof rattle or water leak
Engine mounts failure - can cause excessive vibration
Worn or damaged timing belt tensioner - may result in engine damage
Power steering pump failure - can cause whining or grinding noises
Ignition coil failure - can cause misfires and rough engine performance
Faulty oxygen sensor (O2S) - can cause issues with engine management
Rear air suspension leak - may cause uneven ride height
Coolant temperature gauge malfunction
Airbag light on due to faulty sensors or module
ABS light on due to faulty wheel speed sensors
Electrical system faults (e.g., radio, lights, windows) related to wiring or connectors
Rear window glass failure - may cause water leaks and wind noise
Fuel pump failure - can cause difficulty starting the engine
Spark plug fouling - can lead to rough engine performance
Worn or damaged PCV valve (Positive Crankcase Ventilation)
Exhaust gas recirculation (EGR) system clog or malfunction
Faulty DPF (Diesel Particulate Filter) regeneration light on due to faulty sensors
Turbocharger failure (in diesel models only)
Faulty thermostat - can cause cooling issues and excessive engine temperature
Fuel filter contamination - may cause fuel pump failure
Worn or damaged lower control arm bushings - can cause steering instability