The Citroën C6 is an executive car produced by the French car maker Citroën since 2005. The Citroën C6 was inspired by the Citroën C6 Lignage concept car with a fastback saloon like styling. Inspired by the Citroën C6 Lignage prototype, which was first shown at the Geneva Motor Show in the spring of 1999, but differs from the concept car's styling in minor details (like not having rear suicide doors for easy access). The C6 was intended as a replacement for the XM, and Citroën was intent on launching it before the end of 2000. History At the time, it was hoped that the C6 would go into production by the end of 2000, as the replacement for the ageing XM, which was first produced in May 1989. In July 2007, Car ran a 2.7 litre V6 on its long term fleet and rated it for its "waftability" and comfortable interior but felt it was a car that the driver needed time to adjust to. In isolation, the car’s acceleration was regarded as "effortless" but not up to the standards set by similarly priced and equipped vehicles, such as the BMW 535d. Design The Citroën C6 Lignage formed the basis of the Citroën C6, which was launched in November 2005, five years later than Citroën had originally planned. The XM ceased production in June 2000, and the first C6 rolled off the production line almost six years later. Features The C6 is powered by either a 3.0 L ES9 V6 producing or a 2.7 L V6 HDi diesel producing . In October 2006 a 2.2 L HDi producing with FAP, four cylinders and a dual turbo was introduced. Land Rover used the DW12 engine in the Freelander 2 and Range Rover Evoque, where it generates . In June 2009, the new 3.0 L V6 HDi diesel producing replaced the 2.7 L V6 HDi. The C6 has a fastback saloon profile which is due in part to the concave rear window, similar to the Citroën CX and some models of Dodge in the 60s. However, the C6 is a conventional saloon with a classic trunk, and not a hatchback like its XM predecessor. The C6 was aimed as a stylish alternative to executive cars, like the BMW 5 Series and the Audi A6, and it has been described as "spaceship that rides on air", "charmingly idiosyncratic" and "refreshingly different". Citroën