BMW 523 2006

🚨 What to check before buying

Overall risk score: 10/10

Serious risks

• VANOS seals and solenoids: VANOS system components wear — rough idle, rattling on cold start, reduced power. Rebuild kits available for €200-500.
• Oil filter housing gasket leak: Very common leak point. Oil drips onto alternator bracket. Easy to fix but messy if ignored.
• Electric water pump failure: Electric water pump can fail without warning — leads to overheating. Replace preventatively around 80-100k km.
• Valve cover gasket leak: Valve cover gasket hardens and leaks. Common age-related issue.
• Car is 20 years old — expect age-related wear: rubber seals, bushings, water pump, AC compressor
• Higher mileage (237,405 km) — check for timing system condition, turbo health, and suspension wear

Additional notes

• Older BMW with 200k+ km will likely need suspension refresh (control arms, bushings: €600-1,200), possibly cooling system components (water pump, thermostat: €300-700), and various sensor replacements. Budget accordingly.
• 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.