The Citroën XM is a front-engine, front-drive, five-passenger, five-door hatchback noted for its hydropneumatic suspension. Manufactured and marketed by Citroën from 1989 to 2000, with a minor facelift in 1994, XM production reached 333,405 over the course of 11 years.
Nuccio Bertone, alongside an XM
Hatchback (pre-facelift)
Hatchback (rear)
Break (pre-facelift)
Hydropneumatic suspension
Hydropneumatic suspension is a type of motor vehicle suspension system, designed by Paul Magès, invented by Citroën, and fitted to Citroën cars, as well as being used under licence by other car manufacturers. Similar systems are also widely used on modern tanks and other large military vehicles. The suspension was referred to as Suspension oléopneumatique in early literature, pointing to oil and air as its main components.
High position
Low position
Citroën suspension sphere
Challenger 2, main battle tank of the British army, uses hydropneumatic suspension for better crew comfort and increased firing accuracy.