The Mercedes M111 E23 engine appeared in 1995 and replaced the 2.3-liter M102 E23, which by this time was completely outdated. The new M111 E23 has acquired a compact cast-iron cylinder block, as on the M111 E20, but with a cylinder diameter increased by 1 mm and a different crankshaft, with a piston stroke increased to 88.4 mm, relative to the E20.
R4 Mercedes engines: M102, M111 E18, M111 E20, M111 E22, M111 E23, M166, M254, M260, M264, M266, M270, M271, M274, M282.
The cylinder head is the same as on the two-liter power unit, with two camshafts and 16 valves, hydraulic lifters and electronic fuel injection. In parallel with the aspirated, a compressor version was also produced, which used an Eaton M62 supercharger. The timing drive used a chain with a resource of about 250 thousand km. Bosch ME 2.1 engine management system.
The engine is still produced and installed on SsangYong under the symbol G23D.
Specifications
| Production years | since 1995 |
| Displacement, cc | 2295 |
| Fuel system | injector |
| Power output, hp | 143 – 150 (M 111 E 23) 193 (M 111 E 23 ML) |
| Torque output, Nm | 210 – 220 (M 111 E 23) 280 (M 111 E 23 ML) |
| Cylinder block | cast iron R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 90.9 |
| Piston stroke, mm | 88.4 |
| Compression ratio | 10.4 (M 111 E 23) 8.8 (M 111 E 23 ML) |
| Features | no |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | at the intake |
| Turbocharging | no (M 111 E 23) kompressor (M 111 E 23 ML) |
| Recommended engine oil | 5W-40 |
| Engine oil capacity, liter | 5.5 |
| Fuel type | petrol |
| Euro standards | EURO 2/3 |
| Fuel consumption, L/100 km (for C230 Kompressor W202) — city — highway — combined |
10.0 6.4 8.3 |
| Engine lifespan, km | ~450 000 |
| Weight, kg | 167 |
Disadvantages of the M111 E23 engine
- Most of all, grease leaks will cause you problems, and their number grows with mileage.
- The mass air flow sensor has a modest resource; if it breaks, fuel consumption increases.
- Up to 100,000 kilometers, the water pump almost always starts to leak in the engine.
- From 100 to 200 thousand km, piston skirts often wear out or the exhaust cracks.
- After 200 – 250 thousand km, the oil pump or timing chain drive already requires attention.
