The Vauxhall Cavalier is a large family car that was sold primarily in the United Kingdom by Vauxhall from 1975 to 1995. It was based on a succession of Opel designs throughout its production life, during which it was built in three incarnations. The first generation of Cavalier, launched in 1975 and produced until 1981, was Vauxhall's version of the General Motors 'U-Car' - essentially an Opel Ascona B/ Opel Manta with a few minor visual differences.

The D-segment is the 4th category of the European segments for passenger cars, and is described as "large cars".