AUDI S8 2008

🚨 What to check before buying

Overall risk score: 10/10

Serious risks

• Carbon buildup (direct injection): Severe GDI carbon deposits. Walnut blasting essential.
• Timing chain guide wear: Plastic chain guides wear, causing rattle.
• Coil pack failure: Ignition coils fail, causing misfire.
• Car is 18 years old — expect age-related wear: rubber seals, bushings, water pump, AC compressor
• Higher mileage (223,369 km) — check for timing system condition, turbo health, and suspension wear

Additional notes

• Vehicle is 15+ years old. Age-related issues: rubber seals/hoses degrade, electrical connectors corrode, suspension bushings wear. Not specific to any engine, but expect €500-1,500/year in age-related maintenance beyond normal service items.
• Audi 4.2 FSI V8 with 50k+ km: severe carbon buildup on intake valves from direct injection. Causes rough idle, misfires, and power loss. Walnut blasting (€400-900) is essential every 50-60k km. Also check timing chain guides — 8-chain system replacement is €2,000-5,000.
• Any car with 200k+ km requires extra scrutiny. At this mileage: suspension components are worn (bushings, ball joints, shocks), seals and gaskets are hardened, electrical connectors corrode, and major components approach end-of-life. For luxury cars (BMW, Mercedes, Audi) the cost of 200k+ km maintenance can exceed the car's value. Always get a pre-purchase inspection (PPI) and budget 15-25% of purchase price for immediate maintenance.
• S8 petrol (106 listings, avg 170k km, €40k) — 4.0 TFSI V8 biturbo with cylinder deactivation. At high mileage: turbo wastegate actuators (€2000+ pair), carbon buildup on intake valves, adaptive air suspension (standard on S8, €2500+/corner). Fuel consumption 15-18L/100km city.