In 1997, the new M112 E32 engine replaced the old E32 engine from the M104 series. The main difference between the new series and the old one was that now the motors became V-shaped with a breakup angle of 90 degrees. The move away from the in-line arrangement of the cylinders allowed the engine to be made more compact and to unify 6- and 8-cylinder engines as much as possible, which, in turn, made it possible to install both series of engines in the same car models. To reduce the weight of the engine, instead of a cast iron block, Mercedes engineers decided to use an aluminum alloy block, and the liners of each cylinder were made of silumin. To reduce the inertial forces in the engine block, a balancer shaft was provided along the cylinder banks.
Specifications
| Manufacturer | Stuttgart-Bad Cannstatt Plant |
| Also called | M112 |
| Production years | 1997 |
| Cylinder block alloy | aluminum |
| Fuel system | injector |
| Configuration | V |
| Number of cylinders | 6 |
| Valves per cylinder | 3 |
| Piston stroke, mm | 84 |
| Cylinder bore, mm | 89.9 |
| Compression ratio | 10 |
| Displacement, cc | 3199 |
| Power output, hp | 190/5600 218/5700 224/5600 |
| Torque output, Nm / rpm | 270/2750 310/3000 315/3000 |
| Fuel type | 95 |
| Euro standards | Euro 4 |
| Weight, kg | ~150 |
| Fuel consumption, L/100 km (for E320 W211) — city — highway — combined |
14.4 7.5 9.9 |
| 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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