The new 2018 Audi S4, while slightly larger than even the previous version, is now within a few pounds of the very first B5 S4 thanks to a 100-pound diet. After years of V8 power and a brief stint ...

A powerful 252-horsepower engine combined with Audi's excellent quattro all-wheel-drive system, and the A4 gives BMW's 3-Series and Mercedes' C-Class a serious run for the money, while its sporty ...