| Mercedes-Benz M156/M159 | |
|---|---|
 | |
| Overview | |
| Manufacturer | Mercedes-AMG |
| Production | 2006-2014 |
| Layout | |
| Configuration | Naturally aspirated 90° V8 |
| Displacement | 6.2 L (6,208 cc) |
| Cylinder bore | 102.2 mm (4.02 in) |
| Piston stroke | 94.6 mm (3.72 in) |
| Valvetrain | DOHC 4 valves x cyl. |
| Compression ratio | 11.3:1 |
| RPM range | |
| Max. engine speed | 7,250-8,000 |
| Combustion | |
| Fuel system | Fuel injection |
| Fuel type | Gasoline |
| Oil system | |
| Cooling system | Water-cooled |
| Output | |
| Power output | 451–622 hp (457–631 PS; 336–464 kW) |
| Torque output | 630–650 N⋅m (465–479 lb⋅ft) |
| Chronology | |
| Predecessor | Mercedes-Benz M113 engine |
| Successor | Mercedes-Benz M157 engine (5.5L) Mercedes-Benz M176/M177/M178 engine (4.0L) |
The M156 is the first automobile V8 engine designed autonomously by Mercedes-Benz subsidiary Mercedes-AMG, as previous AMG engines have always been based on original Mercedes engines. The engine was designed to be a naturally aspirated racing unit, and is also used in a number of high-performance AMG-badged Mercedes-Benz models. The engine was designed by Bernd Ramler, famed by the design of the Porsche Carrera GT's 5.7-liter V-10 engine.