August Horch left the Horch company he started in 1909 and started afresh with the name Audi , which is Latin for Listen, just as Horch means Listen in German. They built expensive high quality cars but demand in Germany fell away due to the economic situation amd were taken over by DKW in 1928. The new owners formed Auto Union in 1932 along with Horch and Wanderer. Post war the factory ended up in East Germany, so Audi restarted in the West with American funding Marshall Plan funding in 1949. They were building 2 stroke DKWs when Mercedes Benz bought the Audi company, but by 1965 they sold Audi to Volkswagen who were looking for extra space to build Beetles. Luckily the VW boss liked the prototype Audi engineers had been building, a kind of DKW but with a 4 stroke engine developed by Mercedes Benz, with front wheel drive. The Audi 80 (80 bhp) came out in 1966 with an Audi 90 2 months later. The Audi 80 was then dropped and became the 75, while the lower price model the Audi 72 became the 60 which by 1968 had a 55bhp engine. In late 1968 the Audi 100 was introduced which could be supplied with 80, 90 or 100bhp engines, while the 100S was the most powerful at 112bhp. That same year, 1980, saw the groundbreaking Audi Quattro which really put the name Audi on the map.