smart set to roll out a full complement of Alternative Drive Systems

Mercedes-owned smart is set to become the first mainstream production vehicle with a full complement of alternative drive systems. It has begun touting four new versions of the smart fortwo, all of which can be expected in production form before the year is out. We’re not sure which is the most exciting as they all offer different solutions depending on your needs. The cleanest of the new smarts is the 30 kW plug-in electric version with a range of 115 kilometres (EUDC), but there’s also a 100 mpg 53 kW diesel hybrid drive, a slightly less economical petrol hybrid for those who don’t want diesel, a 52 kW micro hybrid petrol variant and a diesel-engined fortwo which will become the world’s most economical combustion-engined production car with 85 mpg (3.3 litres of fuel per 100 kilometres - NEDC) and the ability to travel 1000 kilometres without refuelling. The smart fortwo diesel is the world champion in low CO2 emissions at just 88 grams of CO2 per kilometre. This is huge news.

The smart fortwo electric drive (ed) - zero emission town and city car

It comes with everything that makes a smart a smart – but it doesn't have a combustion engine. A 30 kW magnetic motor runs at the rear of the smart fortwo electric drive that is driven by a high-performance, high-temperature battery made from environmentally-compatible sodium-nickel-chloride. This is housed in the underbody, which means that the interior space is not compromised.

Boasting New European Driving Cycle (NEDC) consumption of just 12 kilowatt hours per 100 kilometres and zero carbon dioxide emissions, the smart fortwo electric drive is the most economical and climate-friendly alternative in urban traffic. When charged, the 30 kW two-door car can travel around 115 kilometres (EUDC). When the battery is empty, it can be charged at any 230 volt power socket – at least 1000 times. The battery lasts for up to ten years. It takes four hours to charge it to 80 percent capacity and eight hours to charge it to full capacity.

The NEDC consumption costs stand at around just € 0.02 per kilometre, far below those of a combustion engine – despite offering almost the same performance. Acceleration from zero to 60 km/h is similar to that of the petrol variants and the car has a maximum speed of 112 km/h. Furthermore, as a zero emission car the smart fortwo electric drive enjoys tax advantages in many countries and is exempt from local restrictions such as the London congestion charge. This small electric car offers a combination of agility, economy and environmental compatibility that is unique in this class.

The smart fortwo hybrid drive (hd)

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 class. No other diesel car is more fuel-efficient and climate-friendly.

The smart fortwo hybrid drive has a 33 kW combustion engine and a 20 kW electric motor that is driven by a nickel hybrid battery (1 kWh). Both motors can work together or separately.

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 and maximum torque of 110 Newton metres, whilst the electric motor has power of 20 kW and maximum torque of 50 Newton metres. Together, these add up to an exceptional 53 kW 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.

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