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 ...

The transmission is a[n] 8-Speed Automatic with all-wheel drive. How big is the 2018 Audi S4 3.0 TFSI Quattro Progressiv's fuel tank? How efficient is a 2018 Audi S4 3.0 TFSI Quattro Progressiv?

Understated almost to the point of anonymity, the S4 is the mid-level performance version of the Audi A4 saloon ... and the ubiquitous quattro all-wheel drive. That, however, is about to change ...