A winning ratio.
The six-speed transmission in the BMW Z4 Roadster.
A short movement of the shift lever and the gear changes instantly. The clutch re-engages and directs the full force of the drive power to the rear wheels. Standard for the BMW Z4 Roadster, the six-speed sport automatic transmission Steptronic extracts even more driving pleasure from the muscular torque of the engines. Whatever your driving style, control of the Z4's efficient, dynamic performance is at your fingertips.
