With headquarters in Ingolstadt, Bavaria, Audi AG has been almost wholly owned by the Volkswagen Group since 1964. The company's tagline - 'Vorsprung durch Technik' means 'Advancement Through Technology' and is aptly reflected in the vehicles made by the German manufacturer. Hugely famous 'four rings' make for the company's logo and symbolizes amalgamation of Audi with DKW, Horch and Wanderer. Audi has also gained significant success in the world of motor sport over a period of time.