Audi, A8, D3, 3.7 Quattro (2002-) Common Issues
1. Faulty VSV (Vacuum Switching Valve)
Occurrence: 12%Cost to repair: $800Symptoms:
Difficulty starting, rough idling, and poor engine performance
2. Clogged or dirty Mass Airflow Sensor
Occurrence: 15%Cost to repair: $300Symptoms:
Poor engine performance, decreased fuel efficiency, and rough idle
3. Faulty Oxygen Sensor (O2S)
Occurrence: 8%Cost to repair: $250Symptoms:
Difficulty starting, poor engine performance, and 'Check Engine' light illumination
4. Worn or loose Timing Belt
Occurrence: 20%Cost to repair: $1200Symptoms:
Whining noise from the timing belt area, engine hesitation, and decreased power output
5. Faulty DME (Digital Motor Electronics) Module
Occurrence: 5%Cost to repair: $1000Symptoms:
Random misfires, poor engine performance, and 'Check Engine' light illumination
6. Clogged or dirty Fuel Filter
Occurrence: 6%Cost to repair: $200Symptoms:
Difficulty starting, decreased fuel efficiency, and rough idle
7. Faulty Fuel Pressure Regulator (FPR)
Occurrence: 4%Cost to repair: $450Symptoms:
Difficulty starting, poor engine performance, and 'Check Engine' light illumination
8. Worn or loose Power Steering Pump Belt
Occurrence: 18%Cost to repair: $900Symptoms:
Whining noise from the power steering pump area, difficulty turning the wheels, and uneven tire wear
9. Faulty Brake Master Cylinder (BMC)
Occurrence: 3%Cost to repair: $850Symptoms:
Spongy brake pedal feel, difficulty stopping the vehicle, and 'Brake' light illumination on the dashboard
10. Faulty Rear Axle Bearing (RAB)
Occurrence: 9%Cost to repair: $1800Symptoms:
Clunking or grinding noise from the rear axle area, uneven tire wear, and difficulty turning the wheels
11. Faulty Rear Wiper Motor
Occurrence: 2%Cost to repair: $300Symptoms:
Inoperable rear wiper blade, noise from the rear wiper area, and water spots on the rear windshield