The Citroën CX is a large, front-engined, front-wheel-drive executive car manufactured and marketed by Citroën from 1974 to 1991. Production models took the form of a four-door fastback sedan, station wagon (estate), and a long-wheelbase fastback limousine. The CX is known for its hydropneumatic self-leveling suspension system, and its low coefficient of drag, underscored by its nameplate CX, which references the aerodynamics symbol cx{\displaystyle c_{x}} for drag coefficient.