The 1975-78 Audi 50 model was created to compete in the supermini size category in Europe made popular by the original Mini Cooper. Sister to the Volkswagen Polo (sized smaller than the 1975-84 Rabbit), these were powered by four cylinder engines ranging in size from .9 liters to 1.3 liters. The 50 was never imported to the U.S. (Photo credit: Sean Connor)