2017 MERCEDES-BENZ C-Class M274 DE16 LA/M274 DE20 LA (W205)
W205 / Sedan / Coupe / Estate (varies by market) / Global (Europe, North America, Asia, others; some engine variations apply per market)
M274 DE16 LAM274 DE20 LAOM654M264OM651Registro exacto de año/versiónSilver
Engine identity
Oils and fluids
Service and parts data
Common and chronic problems
- Timing chain tensioner wear on some M274 engines
- Balance shaft gear wear in early production models
- Electric water pump failures (mostly on diesel engines)
First checks
- Inspect timing chain tensioner and chain noise
- Check for oil leaks around valve covers and turbocharger area
- Verify functioning of electrical components (common on W205)
Antes de cambiar piezas
- Save fault codes and freeze-frame data before clearing anything.
- Check engine oil, coolant and transmission fluid using the correct temperature and service procedure.
- Verify power, ground, connectors, hoses, leaks and live data before replacing expensive parts.
Important notes
- Technical details vary by market, especially between North America (gasoline focus) and Europe (gasoline and diesel).
- Oil capacity includes full service fill with filter change; always verify latest MB documentation for service recommendations.