Audi, A6, C8, 55 TFSIe Quattro Competition (2021-) Common Issues
1. Rear Main Seal Leaks
Occurrence: 12%Cost to repair: $800Symptoms:
Oil leaks under the car, engine noises
2. DSC (Electronic Stability Control) Module Failure
Occurrence: 9%Cost to repair: $600Symptoms:
Lights on dashboard, pulling to one side while driving
3. Battery Drain Issues
Occurrence: 8%Cost to repair: $400Symptoms:
Car not starting in the morning, alarm constantly going off
4. Software Glitches with the Quattro System
Occurrence: 7%Cost to repair: $500Symptoms:
Lights on dashboard, reduced engine performance
5. Faulty Air Suspension Sensors
Occurrence: 6%Cost to repair: $700Symptoms:
Uncomfortable ride, uneven tire wear
6. Rear Brake Squeal and Wear Issues
Occurrence: 5%Cost to repair: $900Symptoms:
Squealing or grinding noises when braking
7. Coolant Leaks around the Engine Block
Occurrence: 4%Cost to repair: $600Symptoms:
Engine overheating, puddles of green fluid under the car
8. Faulty Driver Information Display (SID)
Occurrence: 3%Cost to repair: $300Symptoms:
Blank or distorted display in the instrument cluster
9. Fuel System Sensor Failure
Occurrence: 2%Cost to repair: $400Symptoms:
Poor engine performance, reduced fuel efficiency
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