Mercedes M112 engine
Content
The V6 series of Mercedes M112 engines with a volume of 2.4 to 3.7 liters was assembled from 1997 to 2007 and was installed on almost the entire very extensive model range of the German concern. There was an AMG version of the 3.2-liter twin-turbo engine with 354 hp. 450 Nm.
The V6 line also includes internal combustion engines: M272 and M276.
Technical characteristics of motors of the Mercedes M 112 series
| Exact volume | 2398 cm³ |
| Supply system | distribution injection |
| Internal combustion engine power | 170 hp |
| Torque | 225 Nm |
| Cylinder block | aluminum V6 |
| Block head | aluminum 18v |
| Bore | 83.2 mm |
| Piston stroke | 73.5 mm |
| Compression ratio | 10 |
| Features of the internal combustion engine | no |
| Hydraulic compensators | Yes |
| Timing drive | chain |
| Phase regulator | inlet and outlet |
| Turbocharging | no |
| What kind of oil to pour | 7.5 liters 5W-30 |
| fuel type | AI-92 |
| Environmental class | EURO 3/4 |
| Approximate resource | 275 000 km |
| Exact volume | 2597 cm³ |
| Supply system | distribution injection |
| Internal combustion engine power | 170 - 177 HP |
| Torque | 240 Nm |
| Cylinder block | aluminum V6 |
| Block head | aluminum 18v |
| Bore | 89.9 mm |
| Piston stroke | 68.2 mm |
| Compression ratio | 11 |
| Features of the internal combustion engine | no |
| Hydraulic compensators | Yes |
| Timing drive | chain |
| Phase regulator | inlet and outlet |
| Turbocharging | no |
| What kind of oil to pour | 7.5 liters 5W-30 |
| fuel type | AI-92 |
| Environmental class | EURO 3/4 |
| Approximate resource | 300 000 km |
| Exact volume | 2799 cm³ |
| Supply system | distribution injection |
| Internal combustion engine power | 197 - 204 HP |
| Torque | 265 - 270 Nm |
| Cylinder block | aluminum V6 |
| Block head | aluminum 18v |
| Bore | 89.9 mm |
| Piston stroke | 73.5 mm |
| Compression ratio | 10 |
| Features of the internal combustion engine | no |
| Hydraulic compensators | Yes |
| Timing drive | double row chain |
| Phase regulator | inlet and outlet |
| Turbocharging | no |
| What kind of oil to pour | 7.5 liters 5W-30 |
| fuel type | AI-92 |
| Environmental class | EURO 3/4 |
| Approximate resource | 325 000 km |
| Exact volume | 3199 cm³ |
| Supply system | distribution injection |
| Internal combustion engine power | 190 - 224 HP |
| Torque | 270 - 315 Nm |
| Cylinder block | aluminum V6 |
| Block head | aluminum 18v |
| Bore | 89.9 mm |
| Piston stroke | 84 mm |
| Compression ratio | 10 |
| Features of the internal combustion engine | no |
| Hydraulic compensators | Yes |
| Timing drive | chain |
| Phase regulator | inlet and outlet |
| Turbocharging | no |
| What kind of oil to pour | 7.5 liters 5W-30 |
| fuel type | AI-92 |
| Environmental class | EURO 3/4 |
| Approximate resource | 350 000 km |
| Exact volume | 3199 cm³ |
| Supply system | distribution injection |
| Internal combustion engine power | 354 hp |
| Torque | 450 Nm |
| Cylinder block | aluminum V6 |
| Block head | aluminum 18v |
| Bore | 89.9 mm |
| Piston stroke | 84 mm |
| Compression ratio | 9.0 |
| Features of the internal combustion engine | intercooler |
| Hydraulic compensators | Yes |
| Timing drive | chain |
| Phase regulator | inlet and outlet |
| Turbocharging | compressor |
| What kind of oil to pour | 7.5 liters 5W-30 |
| fuel type | AI-92 |
| Environmental class | EURO 3/4 |
| Approximate resource | 250 000 km |
| Exact volume | 3724 cm³ |
| Supply system | distribution injection |
| Internal combustion engine power | 231 - 245 HP |
| Torque | 345 - 350 Nm |
| Cylinder block | aluminum V6 |
| Block head | aluminum 18v |
| Bore | 97 mm |
| Piston stroke | 84 mm |
| Compression ratio | 10 |
| Features of the internal combustion engine | no |
| Hydraulic compensators | Yes |
| Timing drive | chain |
| Phase regulator | inlet and outlet |
| Turbocharging | no |
| What kind of oil to pour | 7.5 liters 5W-30 |
| fuel type | AI-92 |
| Environmental class | EURO 3/4 |
| Approximate resource | 360 000 km |
The weight of the M112 engine in the catalog is 160 kg
Engine number M112 is located at the junction of the block with the box
Fuel consumption internal combustion engine Mercedes M 112
On the example of a 320 Mercedes E 2003 with an automatic transmission:
| City | 14.4 liters |
| Track | 7.5 liters |
| Mixed | 9.9 liters |
Similar motors from other manufacturers:
Which cars were equipped with the M112 2.4 - 3.7 l engine
| C-Class W202 | 1997 – 2000 |
| C-Class W203 | 2000 – 2004 |
| CLK-Class C208 | 1998 – 2003 |
| CLK-Class C209 | 2002 – 2005 |
| E Class W210 | 1998 – 2003 |
| E Class W211 | 2002 – 2005 |
| S-Class W220 | 1998 – 2006 |
| SL-Class R129 | 1998 – 2001 |
| SL-Class R230 | 2001 – 2006 |
| SLK-Class R170 | 2000 – 2003 |
| ML-Class W163 | 1998 – 2005 |
| G-Class W463 | 1997 – 2005 |
| V-Class W639 | 2003 – 2007 |
| Crossfire 1 (ZH) | 2003 – 2007 |
Disadvantages, breakdowns and problems of the M112
The signature failure of this series of engines is the destruction of the crankshaft pulley
The remaining engine problems are somehow related to increased oil consumption.
Due to contamination of the crankcase ventilation, grease creeps out from under the gaskets and seals
The main cause of oil burnout here is usually in hardened valve stem seals.
Lubrication leak points are also the oil filter housing and heat exchanger
