The highest performer of the A4 models the Audi RS4 is a totally focused sports version of the executive saloon produced by audi. The S4, the closest Audi a4 derivative that falls short of this model while still above most audi a4 models. The RS4 is only available in a top spec all wheel drive Quattro version and features the top quality, top level options throughout.
The Audi RS4 is a phenominal car and has had rave reviews by all the big name car critics in the uk including Jeremy Clarkson who has said "Of course, it isn’t perfect. It can’t be. Nothing in my world is. But I’m genuinely struggling to think what might be wrong with it. I’m therefore going to do what I did with Local Hero and The Power of the Dog. I’m going to keep on testing it until something crops up." - This highlights the RS4 as only Clarkson could.
The RS stands for "Renn Sport" - The top in Audi's available trim levels for cars. If you realise that audi's regular cars get excellent reviews - you can only imagine the RS4 is a dream..and you would be right.