8-speed Steptronic transmission.
The 8-speed Steptronic transmission allows the driver a significantly higher level of gear-changing and driving comfort thanks to the more finely graduated gear ratios and minimised rev intervals. This combines maximum comfort with the sensation of dynamics and reduced fuel consumption.
The 8-speed Steptronic transmission is barely larger than the corresponding unit in the conventional BMW 7 Series – and yet it also accommodates the electric engine and the separating clutch. The latter disengages the combustion engine during purely electric driving and coasting in the optional ECO PRO Mode – or engages it again whenever power is needed.
During comfort-oriented driving the new 8-speed Steptronic transmission impresses with harmonious power development, almost imperceptible gear changes and supremely smooth running. However, the light, friction-optimised transmission also supports an ambitious driving style with higher shifting dynamics and significantly more spontaneous gear changes. In the BMW ActiveHybrid 7, it is combined with a Hybrid Start Stop function – for more dynamics and driving comfort with reduced fuel consumption and fewer emissions.