Audi is an international high-quality automotive developer and manufacturer. Now a subsidiary of Volkswagen AG, headquartered in Ingolstadt, Germany. The Audi Group includes the parent company and its subsidiaries Audi Hungaria, quattro GmbH, Lamborghini, Cosworth Technology, Audi Brazil, and Audi Senalita. Additionally, Audi has production plants in China, Malaysia, South Africa, and other regions. Audi is one of Germany's oldest automobile manufacturers. Since 1932, Audi adopted the four-ring emblem symbolizing the merger of Audi with DKW, Horch, and Wanderer to form Auto Union. In the 1930s, Auto Union covered all passenger vehicle segments the German automotive industry could offer, from motorcycles to luxury sedans.