Oil specification
Mercedes-Benz C-Class
2.0 OM654 · 2018–2021 · Diesel
Viscosity grade
0W-20
Mercedes moved the OM654 to a 0W-20. Using a 5W-30 raises consumption and is outside the approval.
Oil capacity
5.8 litres
Including filter change. Fill to the dipstick, not to the litre.
Service interval
Up to 15,500 miles or 12 months
Whichever comes first.
Required approvals — the oil must carry at least one
MB 229.71
ACEA C5
229.71 is engine-specific. Check the oil filler cap, which is stamped with the required approval on most of these cars.
Specification sourced from manufacturer service documentation for this engine code. Where a vehicle has been modified, rebuilt or is running an extended interval on a non-standard oil, check the service book before topping up.