Triple S launch from Audi at Frankfurt

Audi will unveil three hot S cars at the Frankfurt motor show: S6, S7 and S8. Well, it's actually four if you count the S6 saloon and estate separately.

All will get power from a brand new twin-turbo 4.0-litre V8, concocted with a little help from the boys at Bentley. It's tuned to develop 414bhp in the S6 (saloon and Avant) and S7, and a whopping 512bhp in the S8.