Take a break.

The Auto Start Stop function in the BMW M3 Convertible.

Red lights, traffic jams, roadworks - in everyday driving situations there are countless instances where the engine is idling, unnecessarily burning fuel. The Auto Start Stop function is a system that automatically turns off the engine when it is not needed, and starts it again silently as soon as you place your foot on the clutch. This not only reduces fuel consumption, it also lowers emissions.