Audi , A6 , C7 , S6 (2014-2018) Common Issues

Faulty or weak fuel pump (10% - 15%)
Problems with the automatic transmission (5% - 8%)
Issues with the adaptive cruise control system (4% - 6%)
Faulty or malfunctioning rear differential (3% - 5%)
Problems with the ESP and traction control systems (3% - 5%)
Water pump failure (2% - 4%)
Timing chain issues (2% - 4%)
Coolant leakages (2% - 4%)
Issues with the DSG transmission (1% - 3%)
Failure of the rear axle bearings (1% - 3%)
Problems with the air suspension system (0.5% - 2%)
Faulty or malfunctioning exhaust gas recirculation (EGR) valve (0.5% - 2%)
Issues with the throttle body and mass airflow sensor (0.5% - 2%)
Failure of the head gasket (0.5% - 2%)
Problems with the PCV system and breather hoses (0.5% - 2%)
Faulty or malfunctioning electronic stability control module (0.2% - 1%)
Issues with the engine oil cooler (0.2% - 1%)
Failure of the power steering pump (0.2% - 1%)
Problems with the starter motor and solenoid (0.2% - 1%)
Issues with the alternator and serpentine belt (0.2% - 1%)