AUDI AG, (Xetra: NSU), commonly known as Audi (pronounced /a'ʊdi/), is a premium luxury German automobile manufacturer which produces Audi branded cars, with headquarters in Ingolstadt, Bavaria. Audi has been an almost wholly-owned (99.7%) subsidiary of the Volkswagen Group (Volkswagen AG) since 1964 (when the group was formerly known as ''Volkswagen Audi Group'' - VAG), and is held in ownership by its shareholders hence the term ''Aktiengesellschaft'' or ''AG''. The company evolved from Volkswagen Group's takeover of both Auto Union, and NSU Motorenwerke AG (NSU), the former having incorporated the historic Audi company which was founded in 1910.
Audi's corporate tagline is Vorsprung durch Technik, meaning ''Advancement through Technology''. This German-language tagline is also used in other European countries, including the United Kingdom, and in other markets, such as Latin America, Oceania and parts of Asia including Japan. The North American tagline is ''Truth in Engineering'', but in Canada the German tagline Vorsprung durch Technik is now used in advertising.