Smart OM 660.940, Engine
| Engine capacity | 799 cm³ |
| Maximum power (range), hp | 41 |
| Maximum torque, N*m (kg*m) at rpm. | 100 (10) / 1800 |
| Fuel used | Diesel fuel |
| Fuel consumption, l/100 km | 3.4 |
| Engine type | In-line, 3-cylinder |
| Additional engine information | DOHC |
| Maximum power, hp (kW) at rpm | 41 (30) / 4200 |
| Compression Ratio (Range) | 9 - 18.5 |
| Cylinder diameter (range), mm | 66.5 |
| Piston stroke (range), mm | 67 - 79 |
| Supercharger | Turbine |
| CO₂ emissions (range), g/km | 90 |
| Valve drive | SOHC |
| Number of valves per cylinder (range) | 2 |
| Start-stop system |