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The Citroën XM is a large executive car that was produced by the French automaker Citroën from 1989 to 2000. It was the last of Citroën's grandes routières, a type of large, comfortable long-distance touring car that was popular in Europe in the 1950s and 1960s. The XM was available in both sedan and station wagon body styles, and was powered by a range of petrol and diesel engines.

The XM was designed by Bertone, and was based on the platform of the Citroën CX. It was a very aerodynamic car, with a drag coefficient of just 0.28. It was also very spacious, with a large boot and a comfortable interior. The XM was praised for its ride quality, handling, and braking.

The XM was a popular car, and was produced in over 330,000 units. It was sold in Europe, Asia, and North America. The XM was discontinued in 2000, and was replaced by the Citroën C6.

Here are some of the key features of the Citroën XM:

• Aerodynamic design with a drag coefficient of just 0.28
• Spacious interior with a large boot and comfortable seating
• Excellent ride quality, handling, and braking
• Available in both sedan and station wagon body styles
• Powered by a range of petrol and diesel engines

The Citroën XM is a classic car that is still popular with enthusiasts today. It is a comfortable, stylish, and well-equipped car that is perfect for long-distance driving.