The General Motors X platform is a rear-wheel drive compact car automobile platform produced from the 1962 to 1979 model years. Developed by Chevrolet, the architecture was initially unique in the U.S. to the Chevy II, first joined by the Pontiac Ventura in 1971, then a range of other GM products as its divisions expanded their compact model lines.

The Chevrolet Chevy II/Nova is a small automobile manufactured by Chevrolet, and produced in five generations for the 1962 through 1979, and 1985 through 1988 model years. Built on the X-body platform, the Nova was the top selling model in the Chevy II lineup through 1968. The Chevy II nameplate was dropped after 1968, with Nova becoming the nameplate for all of the 1969 through 1979 models. It was replaced by the 1980 Chevrolet Citation introduced in the spring of 1979. The Nova nameplate returned in 1985, produced through 1988 as a S-car based, NUMMI manufactured, subcompact based on the front wheel drive, Japan home-based Toyota Sprinter.