The Mercedes M272 E30 engine occupies a place between the M272 E35 and M272 E25, the main purpose of the model is to replace the outdated M112 E28. The M272 E30 aluminum V-shaped (camber 90°) engine block is similar to that used in the E35, but with smaller cylinders and a short-stroke crankshaft.
The cylinder heads are similar to the E35: aluminum with two camshafts (DOHC) and 4 valves per cylinder, the diameter of the intake valves is reduced to 37 mm, exhaust to 28 mm. Everything also uses a continuously variable valve timing system on the intake and exhaust shafts, hydraulic lifters, a two-stage intake manifold with variable length.
The timing drive uses a double roller chain, its service life is about 150 thousand km. Bosch ME control system 9.7.
|Fuel system||distributed injection|
|Power output, hp||231|
|Torque output, Nm||300|
|Cylinder block||aluminum V6|
|Block head||aluminum 24v|
|Cylinder bore, mm||88|
|Piston stroke, mm||82.1|
|Recommended engine oil||5W-30|
|Engine oil capacity, liter||8.0|
|Euro standards||EURO 4/5|
|Fuel consumption, L/100 km (for Mercedes C280 W204)
|Engine lifespan, km||~300 000|
Disadvantages of the M272 KE30 engine
- The weakest point of this power unit is its timing drive.
- Due to the rapid wear of the balancer shaft sprockets, the entire timing drive becomes unusable.
- Another known problem is a stuck exhaust manifold flap.
- Plastic cylinder head plugs ooze oil for 50 – 70 thousand km.
- Overheating of the engine leads to detonation and destruction of the aluminum coating in the cylinders.