Zf 8 Speed Transmission For Sale Series Flagship Saloon

Zf 8 Speed Transmission For Sale Series Flagship Saloon

BMW will soon be offering a new eight-speed automatic transmission developed by ZF that is set to appear first in the 7-series flagship saloon.

The new transmission is said to be both more fuel-efficient and cheaper to manufacture than the current six-speed unit, and its performance is also claimed to be comparable with the more advanced seven-speed dual-clutch unit launched last year in the M3.

Speaking with Automotive News, BMW development chief Klaus Draeger said the luxury carmaker plans to focus on automatic transmissions instead of dual-clutch units for its high-volume models.

The eight-speed automatic that we developed with ZF can compete with dual-clutch transmissions on shifting times, but its lighter and more efficient and has cost advantages, he revealed.

The incompatibility with high engine-speed designs is a disadvantage, however.

Draeger went on to explain that dual-clutch transmissions are complex, expensive and heavy, especially for cars with longitudinally mounted engines and RWD.

ZFs new eight-speed auto, meanwhile, has been designed for both RWD and AWD cars and will appear in several BMW and Audi models later this year.

The extra cogs have the added benefit of improved fuel economy because the gearbox can better match engine speeds with the right gear since theres more to choose from.

To further enhance fuel-economy, the new ZF gearbox will also have an engine stop-start feature.

Both the first and second generation gearboxes will be built at ZFs Saarbrucken plant in Germany with half of these earmarked for use in BMW vehicles.

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