For Audi enthusiasts, there’s no car more iconic than the S4. First seen in 1992 as the UR-S4 and later as the iconic B-segment car in 1999, the B5 Audi S4 launched with a twin-turbo V6 as a response ...

Four-cylinder engines aren't what they used to be—they're way, way better. And considering the goodness of the A4 2.0T's 252-hp turbo-four, the new turbo-six-powered 2018 S4 must work harder than ever ...