At last, diesels are getting the gearboxes they deserve

摘要

It's always been frustrating that so many good diesels are not available with automatic gearboxes. But with dual-clutch transmissions, more manufacturers are changing their ways. The latest is the Citroen C-Crosser twin-clutch 2.2 HDi.rnThe French firm hasn't bothered building an ordinary torque-convertor auto (it's difficult to engineer it to cope with the torque, and it scuppers the all-important fuel-economy and CO_2 figures). Instead, there's a twin clutch. Compared to the manual, CO_2 only increases by 7g/km, while economy drops by 1.7mpg.