2007 Audi S8

The 2007 Audi S8 is a high-performance luxury sedan that caters to drivers seeking a blend of power, comfort, and sophisticated styling. This model year S8 came exclusively with a 5.2-liter V10 engine producing 450 horsepower and 398 lb-ft of torque, paired with a six-speed automatic transmission. Owners often praise its robust performance, luxurious interior, and distinctive styling. Common complaints include high maintenance costs, complex electronics, and potential for expensive repairs due to the car’s age and sophisticated systems.

Engine

5.2L V10

• Oil Leaks
  • Description/Symptoms: Oil leaks can occur from various areas, including the valve cover gaskets, rear main seal, and oil cooler lines. Symptoms include visible oil leaks on the engine, low oil level, and burning oil smell.
  • Solution: Replacing the leaking gaskets or seals is usually the solution. For oil cooler lines, replacement with upgraded aftermarket lines may be a more permanent fix.
  • Estimated Cost to Fix: $200 - $1,500+, depending on the source of the leak.
  • Recalls: None Found
• Carbon Buildup
  • Description/Symptoms: Direct injection engines like the V10 are prone to carbon buildup on the intake valves. This restricts airflow and reduces engine performance. Symptoms include rough idling, misfires, and reduced power.
  • Solution: A manual cleaning of the intake valves (walnut blasting) is the most common solution. Installing an oil catch can can help reduce future buildup.
  • Estimated Cost to Fix: $500 - $1,000+
  • Recalls: None Found
• Ignition Coils Failure
  • Description/Symptoms: One or more ignition coils fail, causing misfires.
  • Solution: Replace faulty ignition coil.
  • Estimated Cost to Fix: $100 - $200+ per coil

Transmission

6-Speed Automatic

• Torque Converter Issues
  • Description/Symptoms: The torque converter can experience premature wear, leading to shuddering or slipping during gear changes.
  • Solution: Replacing the torque converter is the typical fix. Sometimes, a transmission rebuild or replacement may be necessary if the issue has caused further damage.
  • Estimated Cost to Fix: $800 - $3,000+
  • Recalls: None Found

Suspension

• Air Suspension Failure
  • Description/Symptoms: The air suspension system is prone to leaks and compressor failure. Symptoms include the car sitting unevenly, the suspension not adjusting properly, and the air compressor running constantly or failing altogether.
  • Solution: Replacing the faulty air struts, compressor, or air lines is required. Some owners opt for a coilover conversion as a more reliable alternative.
  • Estimated Cost to Fix: $500 - $2,000+ per strut, $500 - $1,500+ for the compressor.
  • Recalls: None Found

Electrical

• Battery Drain
  • Description/Symptoms: Excessive battery drain can be caused by various factors, including faulty modules, aftermarket electronics, or a failing alternator. Symptoms include a dead battery after sitting for a short period of time.
  • Solution: Diagnosing the source of the drain is essential. This may involve disconnecting various components to isolate the problem. Replacing the faulty component is the final step.
  • Estimated Cost to Fix: $100 - $1,000+, depending on the cause.
  • Recalls: None Found
• Module Failures
  • Description/Symptoms: Various electronic modules, such as the comfort control module or the navigation unit, can fail. This can lead to a variety of issues, including non-functional accessories, error messages, and starting problems.
  • Solution: Replacing or reprogramming the faulty module.
  • Estimated Cost to Fix: $300 - $1,500+ per module.
  • Recalls: None Found
• Navigation System Issues
  • Description/Symptoms: The factory navigation system can become outdated or experience software glitches.
  • Solution: The system requires either a software update, or replacement of the head unit.
  • Estimated Cost to Fix: $100-$2,000+

Exterior

• Headlight Issues
  • Description/Symptoms: The HID headlights can experience ballast failure or bulb burnout.
  • Solution: Replacing the faulty ballast or bulb.
  • Estimated Cost to Fix: $200 - $500+ per headlight.
  • Recalls: None Found

Interior

• Sunroof Issues
  • Description/Symptoms: The sunroof mechanism can fail, causing it to jam or not open/close properly.
  • Solution: Repairing or replacing the sunroof mechanism.
  • Estimated Cost to Fix: $300 - $1,000+
  • Recalls: None Found

Summary

The 2007 Audi S8 presents a mix of desirable performance and luxury with potential maintenance challenges. The most concerning issues revolve around the air suspension, V10 engine (oil leaks and carbon buildup), and complex electronics. Repair costs can be high, especially due to the specialized nature of the car’s components and the need for qualified technicians. While the S8 offers a rewarding driving experience, prospective buyers should be prepared for potentially significant maintenance expenses.