28 February 2013

World's first 9-speed auto transmission for RR Evoque

The world's first 9-speed automatic transmission for a passenger car will be shown by Land Rover at Geneva next week.

It will be introduced into the 2014 model year Range Rover Evoque towards the end of this year in both petrol and diesel derivatives. The ZF 9HP transmission is specifically designed for transverse applications, and is one of the most efficient and technically advanced transmissions ever used in a production vehicle.

It will add another layer of performance, refinement and efficiency to the Evoque.

Despite the extra three gear ratios, the 9HP is only 6mm longer and weights 7.5kg less than the outgoing six-speed transmission.

Increasing the number of gear ratios from six to nine gives significant improvement in fuel economy and a corresponding reduction in C02 emissions. The higher top gear not only reduces fuel consumption but the lower engine revs improve comfort and reduce noise when cruising at high speed.

The lowest ration is far lower than the existing 6-speed transmission and is specificaly designed for off-road use, towing and some more extreme on-road conditions like gradients and altitude, giving the driver a heightened sense of control.

The RR Evoque is built at Jaguar Land Rover's Halewood plant in Liverpool and has sold over 140,000 units since its launch in September 2011.