Mercedes M111 Engine 2.0L Specs, Problems, Reliability

Mercedes M111 Engine 2.0L Specs, Problems, Reliability. The producer began the production of the 2.0-liter engine in 1992. This engine replaced the old one 2.0 l M102 engine. The M111 series includes the M111 E18, M111 E22, and M111 E23 engines.

Mercedes M111 Engine 2.0L Specs

The brand-new compact cast iron cylinder block was established specifically for this engine. Also, the engine got brand-new crankshaft, linking rods, pistons, and other parts. Now there is the 16-valve aluminum cylinder head with 2 camshafts, hydraulic lifters/tappets, and electronic fuel injection. Manufacturer produced a naturally aspirated engine in addition to a supercharged engine – the M111 E20 ML (supercharger Eaton M62). The engine has the timing chain and the ECU system Bosch ME 2.1.

Mercedes M111 Engine 2.0L Specs, Problems, Reliability

The M111 series got some upgrades in 2000: strengthened cylinder block, brand-new cylinder head, private ignition coils with new spark plugs, connecting rods and pistons for greater compression ratio, fuel injection enhancements, the brand-new engine control system Siemens ME-SIM4. The supercharger Eaton M62 was replaced by Eaton M45.

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In 2004, the M111 series was entirely taken out from production and replaced by M271 engines.

M111 E20 2.0 l Engine Problems and Reliability

1. Oil Leakages. This is the common problem of the 111 series. The causer is bad cylinder head gasket.
2. Loss of power, high fuel consumption. The root of evil is the air flow sensor.
3. All M111 series engines are rather noisy and featured by a short sparkplug life.

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Mercedes M111 Engine 2.0L Specs

Manufacturer Stuttgart-Untertürkheim Plant
Production years 1992-2004
Cylinder block material Cast Iron
Cylinder head material Aluminum
Fuel type Gasoline
Fuel system Fuel Injection
Configuration Inline
Number of cylinders 4
Valves per cylinder 4
Valvetrain layout DOHC
Bore, mm 79.9
Stroke, mm 78.7
Displacement, cc 1998
Type of internal combustion engine Four-stroke, naturally aspirated and supercharged versions
Compression Ratio 8.5 (Kompressor); 9.6; 10.6
Power, hp 136-129/5100-5500
163-192/5300-5400 (Kompressor)
Torque, lb ft 136-140/3500-4000
177-184/2500 (Kompressor)
Engine weight
Firing order 1-3-4-2
Engine oil weight 0W-30, 0W-40, 5W-30, 5W-40, 10W-40, 15W-40
Engine oil capacity, liter 5.5 (7.0 since 2000)
Oil change interval, mile 6,000
Applications C 200 W202, C 200 Kompressor W202, C 200 Kompressor W203, CLK 200 C208, CLK 200 Kompressor C208, E 200/ 200 E W124,
E 200 W210, E 200 Kompressor W210, SLK 200 R170, SLK 200 Kompressor R170, V 200/ Vito 113 W638
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Mercedes M111 Engine 2.0L Modifications

M111.940 (1992-1998) – the first 136 hp version with compression ratio 10.4 and PMS injection. This engine you can find in Mercedes-Benz E200 W124/W210, C200 W202.
M111.941 (1994-2000) – the very same motor however with Bosch Motronic for Mercedes-Benz C200 W202.
M111.942 (1994-2000) – the exact same 940 engine with HFM injection for Mercedes-Benz E200 W210.
M111.943 (1996-2000) – M111.940 engine with supercharger Eaton 62 (0.5 bar), 192 hp of power and 177 lb-ft of torque. Mercedes-Benz SLK 200 Kompressor R170 was equipped by this engine.
M111.944 (1996-2000) – M111.943 for Mercedes-Benz CLK 200 Kompressor C208 and C 200 Kompressor W202.
M111.945 (1994-2002) – M111.942 variation for Mercedes-Benz CLK 200 C208 and C 200 W202.
M111.946 (1996-2000) – variation of M111.945 for Mercedes-Benz SLK 200 R170.
M111.947 (1997-2002) supercharged engine modification with 186 hp of power and 192 lb-ft of torque. Mercedes-Benz E200 Kompressor W210.
M111.951 (2000-2002) – EVO engine. Compression ratio is 10.6, the power is 129 hp, torque – 140 lb-ft. This engine is for Mercedes-Benz C 180 W203.
M111.955 (2000-2002) – supercharged M111.951 with supercharger Eaton 45 (0.37 bar). This adjustment is for Mercedes-Benz C 200 Kompressor W203, CLK 200 Kompressor C208 and E 200 Kompressor W210.

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