The Mercedes M272 E25 engine, with a working volume of 2.5 liters, was released in 2005 and was intended to replace the previous M112 E26. The engine block is the same as that of the M272 E30, but a crankshaft with a piston stroke reduced to 68.4 mm is used.
The cylinder heads are similar to the M272 E30: aluminum, with two camshafts (DOHC), 4 valves per cylinder, inlet valve diameter 37 mm, exhaust 28 mm. The technology of stepless variable valve timing on the intake and exhaust camshafts, hydraulic lifters, a dual-mode intake manifold with adjustable length was used. The timing drive is chain, the chain resource is about 150 thousand km. Bosch ME control system 9.7.
Mercedes V6 family: M112 E24, M112 E26, M112 E28, M112 E32, M112 E37, M272 E25, M272 E30, M272 E35, M276 DE30, M276 DE35.
Specifications
| Production years | 2005-2011 |
| Displacement, cc | 2496 |
| Fuel system | distributed injection |
| Power output, hp | 204 |
| Torque output, Nm | 245 |
| Cylinder block | aluminum V6 |
| Block head | aluminum 24v |
| Cylinder bore, mm | 88 |
| Piston stroke, mm | 68.4 |
| Compression ratio | 11.2 |
| 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 C230 W204) — city — highway — combined |
13.5 6.9 9.3 |
| Engine lifespan, km | ~275 000 |
| Weight, kg | 177 |
The engine was installed on:
- Mercedes C-Class CL203 in 2004 – 2011 (C 230 SportCoupe and CLC 230), C-Class W203 in 2005 – 2007, C-Class W204 in 2007 – 2009;
- Mercedes E-Class W211 in 2005 – 2009;
- Mercedes V-Class W639 in 2010 – 2012 (China).
Disadvantages of the M272 KE25 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.
Frequently asked questions about the Mercedes M272 E25
How much power does the Mercedes M272 E25 make?
The Mercedes M272 E25 develops 204 hp and 245 Nm of torque.
How much oil does the Mercedes M272 E25 take and which one?
Engine oil capacity: 8.0 liters. Recommended oil: 5W-30.
Does the Mercedes M272 E25 have a timing belt or chain?
The Mercedes M272 E25 uses a timing chain.
Is the Mercedes M272 E25 turbocharged?
No, the Mercedes M272 E25 is naturally aspirated.
Does the Mercedes M272 E25 need valve clearance adjustment?
No, the Mercedes M272 E25 has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the Mercedes M272 E25 last?
The typical lifespan of the Mercedes M272 E25 is ~275 000 km with proper maintenance.
What is the fuel consumption of the Mercedes M272 E25?
Mercedes C230 W204: city 13.5, highway 6.9, combined 9.3 L/100 km.
What cars was the Mercedes M272 E25 installed on?
Mercedes C-Class CL203 in 2004 - 2011 (C 230 SportCoupe and CLC 230), C-Class W203 in 2005 - 2007, C-Class W204 in 2007 - 2009; Mercedes E-Class W211 in 2005 - 2009; Mercedes V-Class W639 in 2010 - 2012 (China).
What are the common problems of the Mercedes M272 E25?
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. All known problems.
