AUDI S8 2018
Analysis of 5 active listings for AUDI S8 2018 from mobile.bg, cars.bg and other sources. Real market prices, known engine issues and what to check before buying.
Petrol 6
📊 Market data
- Cheap listings34 600 €
- Typical price40 392 €
- Expensive listings47 697 €
- Average mileage163 266 км
⚙️ Engines — what to expect
Audi 2.9 TFSI V6 twin-turbo (RS4/RS5) — EA825_2.9TFSI
Known issues
- GDI carbon deposits on intake valves. (~300–700 € repair)
- Internal V coolant pipe can develop leaks. (~500–1 200 € repair)
Audi 4.2 FSI V8 (R8/S5/A8) — AUDI_4.2_FSI_V8
Known issues
- Severe GDI carbon deposits. Walnut blasting essential. (~400–900 € repair)
- Plastic chain guides wear, causing rattle. (~2 000–5 000 € repair)
- Ignition coils fail, causing misfire. (~100–300 € repair)
🚨 What to check before buying
Overall risk score: 10/10
Serious risks
- Carbon buildup: GDI carbon deposits on intake valves.
- Coolant transfer pipe: Internal V coolant pipe can develop leaks.
- Higher mileage (163,266 km) — check for timing system condition, turbo health, and suspension wear
Additional notes
- 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.
- 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.
- 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.
🔥 Current market offers
5 cheapest active listings for AUDI S8 2018. Click "Analyze" for a full report with market valuation, risk analysis and photo analysis.
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