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M272 E30 engine occupies a place between the M272 E35 and M272 E25, the main purpose of the model is to replace the outdated M112 E28.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 V6-family includes: M112 E24, M112 E26, M112 E28, M112 E32, M112 E37, M272 E25, M272 E30, M272 E35, M276 DE30, M276 DE35.
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.
Specifications
| Production years | 2004-2013 |
| Displacement, cc | 2996 |
| 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 |
| Compression ratio | 11.3 |
| Features | no |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | yes |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 8.0 |
| Fuel type | petrol |
| Euro standards | EURO 4/5 |
| Fuel consumption, L/100 km (for Mercedes C280 W204) — city — highway — combined |
13.6 7.0 9.4 |
| Engine lifespan, km | ~300 000 |
| Weight, kg | 177 |
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.
