Mercedes-Benz S 400 2000

🚨 What to check before buying

Overall risk score: 10/10

Serious risks

• Carbon buildup (DI): Direct injection causes carbon deposits on intake valves — walnut blasting needed.
• PCV/oil separator: PCV oil separator can fail, causing oil leaks and idle issues.
• Timing chain tensioner noise: Occasional chain tensioner noise on cold start at higher mileage.
• Car is 26 years old — expect age-related wear: rubber seals, bushings, water pump, AC compressor
• Higher mileage (244,441 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.
• 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.
• Diesel car from before 2018 with very low mileage suggests city-only use — DPF is likely clogged or has been removed (illegal). Check DPF status and EGR condition.