Audi, A3 Common Issues

Faulty Oxygen Sensor (10-15% occurrence)
Issues with Electronic Stability Control (8-12% occurrence)
Problems with Automatic Transmission (7-11% occurrence)
Defects in the Electronic Diesel Fuel Injection System (6-10% occurrence)
Air Conditioning Issues (5-9% occurrence)
Failure of the Sunroof Mechanism (4-8% occurrence)
Leaks and Rattles from the Exhaust System (3-7% occurrence)
Problems with the Power Steering System (2-6% occurrence)
Inoperative Cruise Control (2-6% occurrence)
Ignition Coil Failure (1.5-5% occurrence)
Faulty Fuel Pressure Sensor (1.5-4% occurrence)
Headlight and Taillight Issues due to Worn-out Bulbs or Broken Wiring (1-3.5% occurrence)
Low Fuel Pressure Causing Reduced Engine Performance (1-3% occurrence)
Sudden Failure of the Battery Due to a Faulty Alternator (0.5-2.5% occurrence)
Issues with the Electronic Ignition System, Including Spark Plug Woes (0.5-2% occurrence)