Permitted are four-cylinder engines up to a maximum of 2,000 cc. At least 2,500 units of the engine’s basic version must be produced per year. The block and the cylinder head must be identical to the production version. Turbo-charging is prohibited. Power output is limited by an air restrictor.
| Mercedes-Benz | Volkswagen | |
| Type | four cylinders in line, four valves per cylinder, two overhead camshafts | four cylinders in line, four valves per cylinder, two overhead camshafts |
| Displacement | 1.997 cc | 1.997 cc |
| Bore x stroke | 82,5 x 93,4 mm | 83,0 x 92,3 mm |
| Power output | approx 210 hp (154 kW) at 6,000 rpm | approx 210 hp (154 kW) at 5,800 rpm |
| GInjection system | Bosch MS 3.1 | Bosch MS 3.1 |
| Emission control | three-way-catalytic converter | three-way-catalytic converter |
| Lubrication | dry sump | dry sump |
| Data logging | Bosch WINDarab | Bosch WINDarab |