Audi, A6, C8, 35 TDI (2019-) Common Issues
1. Rough Engine Idling
Occurrence: 12%Cost to repair: $700Symptoms:
Unstable engine performance, hesitating or stumbling when accelerating
2. Oil Leak from Valve Cover Gasket
Occurrence: 8%Cost to repair: $900Symptoms:
Visible oil leaks under the vehicle, strong oil smell, increased oil consumption
3. Transmission Harsh Shifting
Occurrence: 9%Cost to repair: $600Symptoms:
Rough or abrupt shifting between gears, slipping or hesitation when accelerating
4. Coolant Leak from Water Pump
Occurrence: 7%Cost to repair: $800Symptoms:
Visible coolant leaks under the vehicle, overheating engine, decreased performance
5. Faulty Fuel Pressure Regulator
Occurrence: 6%Cost to repair: $700Symptoms:
Poor fuel economy, stalling or hesitating when accelerating, rough engine performance
6. Rattling or Vibrations from Engine Mounts
Occurrence: 5%Cost to repair: $400Symptoms:
Unusual vibrations or rattling sounds from the engine area, decreased comfort during driving
7. Faulty Rear Air Suspension
Occurrence: 4%Cost to repair: $1000Symptoms:
Ride height issues, poor handling, increased wear on tires and suspension components
8. Clogged or Faulty Diesel Particulate Filter (DPF)
Occurrence: 3%Cost to repair: $1200Symptoms:
Reduced engine performance, decreased fuel efficiency, error lights on dashboard
9. Transmission Software Issues
Occurrence: 2%Cost to repair: $800Symptoms:
Transmission malfunction, erratic shifting, or inability to select gears
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