Capable and quick, the Audi S4 is one of those Q-cars you may not notice, until you drive one. A lot of attention tends to be focused on Audi’s road-burning R8s, its RS selection of saloons or maybe just its sporting TT types, but if you want to be more subtle but still be swift, then the Audi S4 should be on your list to try. There are saloon or estate derivatives, the later is more … [Read more...]