ABT Sportsline may have employed a host of performance upgrades for the super limited, Legacy Edition Audi RS7 last year, but it isn't just done yet in making the customized super sedan even more ...

It’s Audi vs BMW in this street-driven performance battle! The Audi ABT RS4-R Avant B9 takes on the BMW M5 F90 in a clash of ...

When Hans-Jürgen Abt took over the family tuning business from his father in the late 1980s, he also inherited an Audi Ur-Quattro. And of course, he set about modifying it immediately.