The Citroën C5 is a large family car produced by the French manufacturer Citroën since March 2001, currently at its third generation. It replaced the Citroën Xantia, in the large family car class, and is the first modern Citroën with "Cx" naming nomenclature, previously used by its ancestors, the C4 and C6 from 1930. A crossover, unrelated to the previous generations, was released in 2021, with crossover styling and marketed as the Citroën C5 X.

The Citroën C4 is a car produced under their Citroën marque, from the French automaker PSA Group, and later Stellantis. It was positioned to be the successor to the Citroën Xsara. The first generation production started in September 2004. For its first two generations, the C4 was a compact car/small family car, but it has been redesigned as a subcompact crossover SUV for its third generation.