Audi S6 Avant

It's out with petrol and in with diesel as the new Audi S6 Avant boasts a 344bhp electrically assisted six-cylinder TDI unit

The facelifted S6 Avant now has RS4-matching power underneath its subtle body, but is it worth the money?

Storming new S6 features a hi-tech V8 shared with the S7, S8 and Bentley Continental GT

It's got all the right credentials for a high-performance flagship car, but will Audi's S6 meet expectations?

How time flies when you're enjoying yourself. That's certainly true of Audi's super S6 Avant. The four-wheeled equivalent of Concorde and a jumbo jet …