Both the 45 kW/61bhp model and the 52 kW/71bhp model of the super compact, Smart fortwo will be outfitted with the new drive system. The technology lets the car stop the engine when it runs below 5 mph and restart it once the driver steps on the gas pedal. The driver only needs to hit the gas pedal and brake - no clutchwork or gear changing is ever needed.
The Smart micro hybrid drive automatic start-stop function is proven technology, having been around since 2007, although previously available only in the 52 kW/71b hp, fortwo model. Daimler engineers estimate that the micro hybrid system should increase fuel efficiency by eight per cent even if the tech isn’t a true petrol/electric engine—it takes two engines, one petrol and an electric cell driven motor to be properly called a hybrid engine. What Smart drivers will get is just a user-friendly automatic start/stop capability that nominally increases fuel mileage by 8 percent (to 4.3 litres, New European Driving Cycle or NEDC). In city traffic, with frequent stop-and-go driving, estimated fuel savings of up to 20 percent is possible.
Other enhancements include a maintenance-free, closed diesel particulate filter that can practically erase any particulate emissions. There is an estimated 7 out of 10 customers in Europe who choose a petrol engine and they will now be driving the micro hybrid Smart. Consuming only 3.4 litres per 100 kilometres (NEDC), the Smart fortwo super compact is still the world’s most economical production car and emissions champion. Daimler is bent on making the Smart fortwo, super compact the ultimate environmentally friendly, stylish, economical, urban micro-car.