Engine Mercedes M112 E24

The Mercedes M112 E24 engine appeared in 1997 and was intended for models with an index of 240. The youngest member of the family is based on the M112 E28 cylinder block, modified for a 83.2 mm piston.

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 from the M112 E28 were adapted to the new cylinder block, the diameter of the intake valves was reduced to 30 mm, the exhaust valves to 34 mm. Otherwise, these are the same aluminum single-shaft cylinder heads with three valves per cylinder, with a variable valve timing system and hydraulic compensators. Intake manifold for M112 E24 with adjustable length. Timing chain drive, chain service life is approximately 200 thousand km. Bosch Motronic ME 2.0 engine management system.


Production years 1997-2000
Displacement, cc 2398
Fuel system distributed injection
Power output, hp 170
Torque output, Nm 225
Cylinder block aluminum V6
Block head aluminum 18v
Cylinder bore, mm 83.2
Piston stroke, mm 73.5
Compression ratio 10.0
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
— city
— highway
— combined
Engine lifespan, km ~275 000
Weight, kg 160

Disadvantages of the M112 E24 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.

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