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 It was intended to replace the completely outdated M102 E23 engine technology.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.
Specifications
| 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 10.4 |
| 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 |
10.0 6.4 8.3 |
| 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 ~7.0 ~8.5 |
| Oil change interval, km | 7000-10000 |
| Normal engine operating temperature, °C | ~90 |
| Engine lifespan, km — official information — real |
— 300+ |
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