The Audi RS6 may no longer represent the cutting edge of rocketship executive saloons and estates, but it's still an enormously satisfying and concussively quick way to cover miles. Beautifully put together and subtly aggressive in their appeal, the RS6 models were, until Mercedes massively escalated the horsepower stakes, the most powerful executive cars around. The four wheel-drive system of the RS6 ensures that it can deploy its power effectively and it's worth tracking down a car with a few miles on the clock in order to take the edge off the sharp initial depreciation.
