The combination of an electric motor and a combustion engine makes the smart fortwo even more economical and environmentally friendly than ever. The hybrid concept reduces consumption and emissions for both the diesel and the petrol version by around 12 percent. For example, the standard consumption (NEDC) of the smart fortwo hybrid drive diesel is reduced from 3.3 litres to 2.9 litres per 100 kilometres. Carbon dioxide emissions fall from 88 to 77 grams per kilometre. This means that the CO2 champion is setting new standards for the "three litre" car. No other diesel car is more fuel-efficient and climate-friendly.
The smart fortwo hybrid drive has a 33 kW/45 bhp combustion engine and a 20 kW/27 bhp electric motor that is driven by a nickel hybrid battery (1 kWh). Both motors can work together or separately. This strategy leads to a double advantage. The exclusive use of the electric motor enables fuel-saving and completely emission-free driving in urban traffic i.e. zero emissions and no noise. The combined use of both motors provides for a considerable increase in power and torque. In figures, this means that the combustion engine delivers power of 33 kW/45 bhp and maximum torque of 110 metres, whilst the electric motor has power of 20 kW/27 bhp and maximum torque of 50 metres. Together, these add up to an exceptional 53 kW/72 bhp power pack. The torque interruptions when changing gear, especially when changing from first to second gear, are compensated by simultaneous use of both drives. This enables the smart fortwo hybrid drive to accelerate from zero to 100 km/h approximately four seconds faster than the smart fortwo cdi. In this way, the hybrid concept offers a unique combination of driving fun, economy and environmental friendliness.
All new components have been integrated in the existing smart cable harness and databus architecture. The electric motor is connected to the axle drive. The battery is housed under the driver's seat and is charged via the motor and by recuperation of the braking energy. This means that the hybrid drive is a fully independent system.
The most important technical data on the smart fortwo hybrid drive at a glance:
Cylinders/valves R3/2 valves per cylinder
Engine capacity 799 cc (diesel)
Bore/stroke 65.5 x 79 mm (diesel)
Rated output 33 kW/45 bhp combustion engine 20 kW/27 bhp electric motor combined: maximum 53 kW/72 bhp
Max. torque 110 Nm at 2,000-2,500 rpm (combustion engine)
50 Nm (electric motor)
0-100 km/h 15.8 s
Maximum speed 135 km/h
Fuel consumption* 2.9 l/100 km (diesel)
Fuel saving approx. 12 %
CO2 emissions 77 g/km (diesel) 0 g/km (when the electric motor is exclusively used)
