

Audi, A6, C7, 3.0 TDI (2011-) Common Issues
1. Oil Leaks
Occurrence: 12%Cost to repair: $450Symptoms:
Leakage of oil on the ground from the engine or transmission area
2. Timing Chain Tensioner Failure
Occurrence: 20%Cost to repair: $1200Symptoms:
Noise from the engine compartment when accelerating
3. Faulty DPF (Diesel Particulate Filter)
Occurrence: 18%Cost to repair: $800Symptoms:
Increased backpressure and reduced performance
4. Transmission Problems
Occurrence: 15%Cost to repair: $1000Symptoms:
Unusual noises or vibrations when shifting gears
5. Engine Knock/Low Compression
Occurrence: 10%Cost to repair: $600Symptoms:
Rattling noise from the engine and decreased performance
6. Faulty O2 Sensors
Occurrence: 8%Cost to repair: $250Symptoms:
Check Engine Light illumination and poor fuel efficiency
7. Coolant Leaks
Occurrence: 12%Cost to repair: $350Symptoms:
Leakage of coolant on the ground from the radiator or hoses
8. Faulty Glow Plugs
Occurrence: 6%Cost to repair: $200Symptoms:
Difficulty starting the engine and poor performance at low temperatures
9. Air Suspension Problems
Occurrence: 5%Cost to repair: $900Symptoms:
Unusual noises or vibrations when driving over bumps
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