The Chevrolet Cavalier was Chevrolet's version of the compact GM J platform which consisted of the Cavalier, Cadillac Cimarron, Buick Skyhawk, Pontiac Sunbird and the Oldsmobile Firenza, as well as the European Opel Ascona C and the Vauxhall Cavalier Mk II.
The Cavalier was one of the most popular cars in America from its introduction in early 1981 as a 1982 model. It was affordable, reliable, and got respectable gas mileage. The Cavalier replaced the Chevrolet Monza, and competed with other compact cars that debuted in 1981 -- (e.g the Ford Escort and Dodge Aries).