Mercedes-Benz C 350 2015

🚨 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 11 years old — some age-related maintenance expected (seals, suspension components)
• Higher mileage (218,036 km) — check for timing system condition, turbo health, and suspension wear

Additional notes

• Plug-in hybrids with 120k+ km face dual risk: both ICE engine wear AND high-voltage battery degradation. Maintenance costs combine both worlds. HV battery SoH check is essential. Budget for both engine and EV system maintenance.
• 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.
• Plug-in hybrids with 120k+ km face dual risk: both ICE engine wear AND high-voltage battery degradation. Maintenance costs combine both worlds. HV battery SoH check is essential. Budget for both engine and EV system maintenance.
• 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.