Audi's devastating new V8-engined RS6 might be the fastest production estate car in the world, but that doesn't mean it has to shout about it! The subtle yet distinctive styling is bound to draw admiring glances from enthusiasts and complements this ultra-high- performance model. And a new suspension set-up and uprated chassis ensure that the astonishingly quick car succeeds where its predecessors failed by being as capable across country as it is on the motor-way. We reckon that it is the best driver's machine Audi has built since the original Quattro way back in 1980.