Engine Mercedes M111 E23/E23 ML under the hood

Engine Mercedes M111 E23/E23 ML

In 1995, the last and most voluminous engine in the M111 line of engines came out – this is a 2.3-liter M111 E23 engine. It was intended to replace the completely outdated M102 E23 engine technology. At the heart of the E23 is a cast iron cylinder block, with a bore of 90.9 mm, the piston stroke was increased to 88.4 mm, which is 7.9 mm more than in the 2.0-liter version. In fact, this is the same 2-liter E20 engine, but slightly modernized. Cylinder head, 2 camshafts, 4 valves per cylinder, hydraulic lifters, timing chain drive, ECU from Bosch ME2.1 – all these are the same components as on the E20. Even the compressor version of the E23ML had the same Eaton M62 compressor with a mechanical supercharger, which was driven by a drive belt through an electromagnetic clutch.


Manufacturer Stuttgart-Untertürkheim Plant
Also called M111
Production years 1995
Cylinder block alloy cast iron
Fuel system injector
Configuration inline
Number of cylinders 4
Valves per cylinder 4
Piston stroke, mm 88.4
Cylinder bore, mm 90.9
Compression ratio 8.8
Displacement, cc 2295
Power output, hp 143-150/5000-5400
193-197/5300-5500 (kompressor)
Torque output, Nm / rpm 210-220/3500-4000
280/2500 (kompressor)
Fuel type 95
Euro standards Euro 3
Euro 4 (since 2000)
Weight, kg
Fuel consumption, L/100 km (for C230 Kompressor W202)
— city
— highway
— combined
Oil consumption, gr/1000 km up to 1000
Recommended engine oil 0W-30 / 0W-40 / 5W-30 / 5W-40 / 10W-40 / 15W-40
Engine oil capacity, liter 5.5
7.5 (M111.978)
8.9 (M111.979)
Amount of engine oil for replacement, liter ~5.0
Oil change interval, km 7000-10000
Normal engine operating temperature, °C ~90
Engine lifespan, km
— official information
— real


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