Audi, A6, C8, 55 TFSI Quattro (2018-) Common Issues
1. Oil Leaks
Occurrence: 8%Cost to repair: $300Symptoms:
Blue or brown stains on the ground under the car, especially near the oil pan gasket.
2. Vibrations and Unsteady Engine
Occurrence: 5%Cost to repair: $600Symptoms:
Rough engine idle, vibrations felt in the cabin, especially at low RPMs.
3. Turbocharger Failure
Occurrence: 4%Cost to repair: $1200Symptoms:
Lack of power, loss of boost pressure, strange noises from the turbo area.
4. Transmission Issues (DQ250)
Occurrence: 3.5%Cost to repair: $800Symptoms:
Slipping or hesitation between gears, unusual noises from the transmission, failure to engage into gear.
5. Coolant Leaks
Occurrence: 3%Cost to repair: $200Symptoms:
Green or yellow fluid leaks under the car, especially near the radiator and water pump area.
6. Faulty Rear Air Suspension
Occurrence: 2.5%Cost to repair: $900Symptoms:
Sagging or uneven rear end, unusual noises from the suspension area.
7. Faulty Climate Control System
Occurrence: 2%Cost to repair: $400Symptoms:
Failure to control cabin temperature, unusual noises from the HVAC system, air leaks inside the car.
8. Cylinder Head Failure
Occurrence: 1.5%Cost to repair: $1800Symptoms:
Lack of power, misfires, unusual noises from the engine area.
9. Faulty 12V Battery Drain
Occurrence: 1.2%Cost to repair: $100Symptoms:
Dead battery despite a fully charged one, unusual electrical system behavior.
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