In addition to the standard petrol engine, such cars will get a "start-stop" system that automatically turns off the engine when the brake pedal is pressed and the speed is below eight kilometers per hour. When the driver releases the pedal, the engine starts again. The MHD system will become standard equipment for all Smart versions with petrol engines producing 61 or 71 horsepower. Thanks to this technology, fuel consumption in the combined cycle will decrease by 8 percent — to 4.3 liters per hundred kilometers, and in urban mode — by almost 20 percent. CO2 emissions will be 103 grams per kilometer.

Starting in October, Smart with a diesel engine producing 45 horsepower will be equipped with a particulate filter. Such cars will consume only 3.4 liters of fuel in the combined cycle, and CO2 emissions will not exceed 88 grams per kilometer.

In addition to technical updates, all versions of this urban microcar will get fresh body paint options, new alloy wheels, and a modernized instrument panel.

On the American market, Smart with "micro-hybrid" systems will not be offered.