Audi S2 was a high-performance two-door sports car manufactured by Quattro GmbH (now Audi Sport GmbH). The car was based on the Audi 80 (B4), they shared the same platform. The Audi S2 is the first car in the Audi S-series. It was this car that gave rise to the Audi Avant RS2 that was manufactured in 1994.

At the end of 1957, Auto Union introduced the first model under its name: Auto Union 1000 Coupe de Luxe, stylistically and technically similar to the DKW 3=6. The engine, which was 1000cm3 in size, originally developed 44 horsepower. The Auto Union 1000S was introduced in 1960 with a more powerful 50-horsepower engine and with an outstanding windshield.