The M112 is a family of V6 engines that were widely used in the 2000s. The first V6 engine ever built by Mercedes. Some time later, the Mercedes M113 V8 engine was designed on its basis. Like the M104 engine, the M112 could be installed on all model lines of rear-wheel drive Mercedes – from C- to S-class. The younger version M112 E24 was intended for models with index 240. The engine turned out to be very compact and lightweight. This was mainly achieved through the use of cylinder heads with one camshaft and three valves per cylinder (two intake and one outlet valves).
Specifications
| Manufacturer | Stuttgart-Bad Cannstatt Plant |
| Also called | M112 |
| Production years | 1997-2000 |
| Cylinder block alloy | aluminum |
| Fuel system | injector |
| Configuration | V |
| Number of cylinders | 6 |
| Valves per cylinder | 3 |
| Piston stroke, mm | 73.5 |
| Cylinder bore, mm | 83.2 |
| Compression ratio | 10 |
| Displacement, cc | 2398 |
| Power output, hp | 170/5900 |
| Torque output, Nm / rpm | 225/3000 |
| Fuel type | 95 |
| Euro standards | Euro 3 |
| Fuel consumption, L/100 km — city — highway — combined |
14.3 7.5 10.0 |
| Oil consumption, gr/1000 km | up to 800 |
| Recommended engine oil | 0W-30 / 0W-40 / 5W-30 / 5W-40 / 5W-50 / 10W-40 / 10W-50 / 15W-40 / 15W-50 |
| Engine oil capacity, liter | 8.0 |
| Amount of engine oil for replacement, liter | ~7.5 |
| Oil change interval, km | 7000-10000 |
| Normal engine operating temperature, °C | ~90 |
| Engine lifespan, km — official information — real |
— 300+ |
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