2020 MERCEDES-BENZ C-Class M264 (1.5L I4 turbo, mild hybrid – some markets)/M274 (2.0L I4 turbo) (W205)
W205 / Sedan / Coupe / Cabriolet / Estate (varies by market) / Global (with market-specific variants)
M264 (1.5L I4 turbo, mild hybrid – some markets)M274 (2.0L I4 turbo)OM654 (2.0L diesel I4 turbo, Europe and select markets)M176 (4.0L V8 biturbo – AMG C63 models, limited markets)Exakter Jahres-/Varianten-DatensatzGold
Engine identity
Oils and fluids
Service and parts data
Common and chronic problems
- Electronics updates required for MBUX system
- Timing chain wear on early M274 engines
- Diesel particulate filter clogging on diesel variants
First checks
- Verify engine code and local emission controls
- Check updated software versions for engine management
- Inspect timing chain guides and turbocharger condition
Vor dem Teiletausch
- 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
- The W205 C-Class continued the model line introduced in 2014, with a significant facelift in 2018 carried into 2020.
- Engine availability and specs vary significantly by market due to emissions regulations.