M254 engine
The M254 engine is fitted to 3 generation(s): Mercedes-Benz E-Class, Mercedes-Benz C-Class, Mercedes-Benz GLC.
Common problems and what to check
Engine: Mercedes M254/M256/M276/M278/M176
- engines are complex and expensive to repair; oil leaks and chain issues occur on M276/M278 at high mileage
What to check when buying: dealer service history; chain noise.
Tip: Service with specialists, oil MB 229.5 or higher.