Turbodiesel

After Hyundai showed just how far it has come from humble beginnings, Kia has proven it's not far behind. The new Rio is more attractive and better built than its predecessor, and promises to cause a few sleepless nights for the European class leaders.

Audi has been developing an electric turbocharger for several years and seems close to launching it on a production car. The new RS 5 TDI concept adds an e-turbo to its biturbo V6 to provide an immediate boost in power that doesn't wait around for exhaust gas.