Engine Mercedes M112 E26

The M112 E26 engine – one of the youngest representatives in the extensive family of M112 engines appeared in 2000 as a replacement for the M112 E24 and was intended for Mercedes models with an index of 240.

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 engine is based on a cylinder block from the M112 E28, in which a crankshaft with an even smaller piston stroke was placed. The cylinder heads are the same as on the M112 E28: aluminum, with one camshaft (SOHC) and three valves per cylinder: two intake, one exhaust. The diameter of the intake valves is 36 mm, the exhaust valves are 41 mm. There is a variable valve timing system, hydraulic lifters, an intake manifold with variable length.


Production years 2000-2006
Displacement, cc 2597
Fuel system distributed injection
Power output, hp 170 – 177
Torque output, Nm 240
Cylinder block aluminum V6
Block head aluminum 18v
Cylinder bore, mm 89.9
Piston stroke, mm 68.2
Compression ratio 11.0
Features no
Hydraulic lifters yes
Timing drive chain
Phase regulator yes
Turbocharging no
Recommended engine oil 5W-30
Engine oil capacity, liter 7.5
Fuel type petrol
Euro standards EURO 3/4
Fuel consumption, L/100 km (for E240 W211)
— city
— highway
— combined
Engine lifespan, km ~300 000
Weight, kg 160

Disadvantages of the M112 E26 engine

  • The signature failure of this series of engines is the destruction of the crankshaft pulley.
  • The remaining engine problems are somehow related to increased oil consumption.
  • Due to contamination of the crankcase ventilation, grease creeps out from under the gaskets and seals.
  • The main cause of oil burnout here is usually in hardened valve stem seals.
  • Lubrication leak points are also the oil filter housing and heat exchanger.

1 thought on “Engine Mercedes M112 E26”

  1. As far as I know m112 engines dont have phase regulators of the camshafts. Intake manifold has variable lenght

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