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The smart fortwo mhd featuring ECO stop/start technology uses a function that automatically switches the engine off at traffic lights or in a traffic jam, and back on when things get moving again.

A brilliantly simple fuel-saving idea.


The mhd switches the engine off as soon as you brake and fall below a speed of 8 km/h. When the time comes to set off again, take your foot off the brake pedal and the engine seamlessly restarts, automatically engaged in first gear ready to continue your journey. This reduces both fuel consumption and CO2 emissions. In fact, the smart fortwo mhd's start/stop generator enables a fuel saving of up to 20% in urban settings and 11% for combined urban and extra-urban driving [2], all without compromising on performance or comfort.

Combined fuel consumption for the 52kw coupé 4.4l/100 km[3], combined CO2 emissions of 105g/km[3]; combined fuel consumption for the 52kw cabrio 4.4 l/100 km[3], combined CO2 emissions of 105g/km[3].
[1] Overseas model shown.

[2] The data do not relate to an individual vehicle and do not form part of an offer, but is intended solely for the purpose of comparison between different types of vehicle. The figures stated depend on the tyre dimensions.

[3] Calculation basis: A comparison of the official fuel consumption figures for the smart fortwo coupé 52kW (71bhp) and smart fortwo coupé 52kW (71bhp) mhd showed that the smart fortwo mhd coupé consumed approx. 11 % less fuel in the urban cycle and approx. 6 % less in the combined driving cycle. The consumption figures may vary depending on the actual traffic situation and individual driving style.