An engine that is not running does not need any fuel. This truism helps the Mercedes-Benz Sprinter to save fuel and thereby reduce its environmental impact. If the vehicle is stationary with the engine idling and the transmission in neutral for more than three seconds, the engine is automatically switched off. As soon as the driver depresses the clutch pedal again, the engine re-starts. The potential for saving fuel is considerable: in some cases, depending on application and traffic density, drivers managed to cut their fuel consumption by as much as 20%. On average, the amount saved will probably be somewhere between five and eight percent. The system performs to best advantage in urban use involving frequent stops in traffic queues or at traffic lights.

This technology or system definitely sounds like something every future car will have. I mean if are not driving, then your car doesn’t need to be on. There are many traffic lights that keep you waiting for a couple of minute, even though to it seems more like an eternity, and turning your car then is a great way to save on gas.