(1973-79 Audi Fox) The Fox / 80 may be the earliest association with Audi that Americans over the age of 40 most have. Powered by a 1.5-liter four cylinder producing 91 horsepower, the Fox was available initially in two- and four-door sedan configuration, followed by a wagon offering for 1975. After 1973 all engines were fuel injected. GTI two-door sport versions were offered from 1978-79. Quad headlamps replaced single ones for 1977. (Photo credit: S. Connor )