2001 MERCEDES-BENZ C-Class M111 E20 (2.0L I4 petrol)/M112 E24 (2.4L V6 petrol) (W203)
W203 / Sedan / Wagon (market dependent) / Global (Europe, USA, Asia, other markets; engine and features vary by region)
M111 E20 (2.0L I4 petrol)M112 E24 (2.4L V6 petrol)OM611 (2.2L I4 diesel)OM646 (2.2L I4 diesel, introduced late 2001 in some markets)Exact year/trim recordSilver
Engine identity
Oils and fluids
Service and parts data
Common and chronic problems
- Front suspension wear (control arm bushings)
- Electrical gremlins in early W203 units
- Rust concerns in certain climates
First checks
- Inspect timing chain condition
- Check for oil leaks from camshaft seals
- Verify condition of suspension bushings
Before replacing parts
- 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
- In some markets, C-Class was also sold as a station wagon (T-model).
- Engine availability and specs vary significantly by market and production month.
- Official service manuals should be consulted for exact oil and fluid types.