Audi S4

The New Audi S4 performance saloon has made the ostensibly unfashionable switch to diesel but could it be an inspired move on Audi's part?

The Audi S4 Avant has been fitted with a new diesel mild-hybrid powertrain, promising improved performance and economy

The latest Audi S4 Avant offers remarkable pace, practical space and a typically premium feel

The new Audi S4 and Mercedes-AMG C 43 go head-to-head in a battle of the 4WD V6-engined fast saloons

With rivals edging in on its territory can the new Audi S4 Avant retain its crown as we drive it on UK roads for the first time?

The Audi S4 is a compact executive car that will match many dedicated sports cars for pace, if not outright driving excitement

The Audi S4 Avant is perfect if you want to mix the carrying capacity of an estate with the performance of a sports car

Sizzling estates go head-to-head as the storming new Audi S4 Avant meets its Volkswagen Passat R36 rival!

It might not be worth as much in Scrabble, but S is to Audi what M is to BMW: a single letter that marks a car out as something particularly special.

For many, the attraction of owning a convertible is to feel the wind in their hair. If that's you, then be careful with Audi's new S4 Cabriolet, as it…

For a company that makes so much of its engineering skills, Audi's approach to the science of car building is not as straightforward as you might imag…