Efficiency right from the start.

The Auto Start Stop function in the BMW Z4 Roadster.

When you next come across a stop sign or red light, or join the end of a traffic queue, it won’t just be your car that comes to a rest. The Auto Start Stop function* automatically switches off your engine whenever you’re stationary and in neutral, saving fuel and cutting CO2 emissions. Simply depress the clutch and the engine restarts automatically.

*optionally available for the BMW sDrive20i and sDrive28i with manual transmission