C6 drivers will have a choice of two V6 engines, both mated to six-speed automatic gearboxes.
Diesel drivers will benefit from the first Citroën application of the 208bhp 2.7- litre V6 HDi engine, equipped with particulate filter. The petrol unit is a new 3.0-litre V6, which produces 215bhp.
The big saloon features an HUD which displays speed and navigation details on the windscreen. It also has an electronic parking brake, lane departure warning system, front and rear parking sensors, Xenon directional headlamps, cruise control and speed limiter.