Completing this “lounge” are sumptuous seats and a new twist on hydraulics in the suspension to provide the kind of “magic carpet” (their words) ride that big Citroëns used to provide. The wheels are 19-inchers and the tyres unfashionably high-profile and narrow, again all in the cause of bump absorption. C5 X serenity is completed in the top plug-in hybrid model by a drivetrain that can power the car for up to 31 miles on electric power alone. So quiet as well as smooth.
It hasn’t been achieved without a degree of practicality. The estate car element of the C5 X is demonstrated by the fastback tail and a wide-opening and low-silled tailgate which opens on to a boot of 545 litres, or 1,640 litres with the rear seats folded down.
Engines choice revolve around petrol or the petrol plug-in hybrid model with that 30 mile electric ability and 225PS (168kW) fed through the front wheels. Unlike the DS9 there’s no mention of a more powerful, all-wheel-drive plug-in model.
New tech available includes a 12-inch HD infotainment system with natural voice recognition and digital personal assistant, an extended head-up display, customisable home screen, four USB sockets and wireless smartphone charging and screen mirroring.