The Vauxhall Astra is a compact car/small family car (C-segment) that has been sold by Vauxhall since 1980. Over its eight generations, it has been made at several GM/Opel/Stellantis plants around Europe - however most versions have been sourced from Vauxhall's plant at Ellesmere Port, Cheshire, England.

The C-segment is the 3rd category of the European segments for passenger cars and is described as "medium cars". It is equivalent to the Euro NCAP "small family car" size class, and the compact car category in the United States.