ABT Sportsline is a motor racing and auto tuning company based in Kempten im Allgäu, Germany. ABT mainly deals with Audi and the related primary Volkswagen Group brands—Volkswagen, Škoda, and SEAT—modifying them by using sports-type suspensions, engine power upgrades, lightweight wheels, aerodynamic components and more. It has been active in DTM for more than a decade. After the death of their father Johann in 2003, the company with 170 employees in their headquarters in Kempten was run by the brothers Hans-Jürgen Abt (born 1962, Managing Director) and Christian Abt. Since 2011, Hans-Jürgen Abt has run the company.