Mercedes-Benz M21, Engine
| Engine capacity | 1,961 cm³ |
| Maximum power (range), hp | 40 |
| Maximum torque, N*m (kg*m) at rpm. | 114 (12) / 1100 |
| Fuel used | Petrol |
| Fuel consumption, l/100 km | 13 - 15 |
| Engine type | In-line, 6-cylinder |
| Additional engine information | carburetor Solex 30 BFLV |
| Maximum power, hp (kW) at rpm | 40 (29) / 3200 |
| Compression Ratio (Range) | 5.75 |
| Cylinder diameter (range), mm | 70 |
| Piston stroke (range), mm | 85 |
| Cooling system (range), l | 21 |
| Engine lubrication system (range), l | 6.5 |
| Valve drive | SOHC |
| Number of valves per cylinder (range) | 2 |