Audi, A8, D4, 4.0 TFSI Quattro (2012-2018) Common Issues
1. Transmission Slippage
Occurrence: 20%Cost to repair: $1200Symptoms:
Difficulty shifting gears, slipping or hesitation between shifts
2. Coolant Leaks
Occurrence: 15%Cost to repair: $800Symptoms:
Low coolant levels, greenish discharge on pavement or underside of car, overheating
3. Electronic Stability Control (ESC) Light On
Occurrence: 12%Cost to repair: $600Symptoms:
ESC warning light illuminated on dashboard, occasional loss of traction control
4. VW/APC Issues (Variable Valve Timing)
Occurrence: 18%Cost to repair: $1000Symptoms:
Misfire codes, rough engine idle, decreased power and acceleration
5. Exhaust Gas Recirculation (EGR) Valve Problems
Occurrence: 10%Cost to repair: $500Symptoms:
Check Engine light on for EGR related issues, engine performance problems
6. Fuel System Issues
Occurrence: 12%Cost to repair: $900Symptoms:
Engine stalling, poor engine performance, fuel system codes
7. Rear Differential Bearing Wear
Occurrence: 8%Cost to repair: $400Symptoms:
Whining or grinding noises from rear end, vibrations
8. A/C Compressor Issues
Occurrence: 9%Cost to repair: $700Symptoms:
A/C not blowing cold air, refrigerant leaks
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