Citroën has revealed a compact SUV version of its C4, a third derivative of the French company’s C-segment range that already has C4 hatchback and Picasso MPV. It's called the Aircross, a production evolution of the Hypnos concept car first seen back in 2008. The Aircross is 11mm more substantial both bumper-to-bumper and across and its substantial 139mm higher roof (compared to the C4 hatchback) is to be expected to due to the high-riding SUV configuration.GLASS ROOFNotable styling details include a glass roof (to all intents and purposes Citroën’s signature design element of late), stacked diode illumination front, rear and in the side mirror indicator repeaters and the car rolls on 18" rims. All things considered, it’s a rather fetching SUV design execution.Although no cabin images have been leaked, expect to find touch-screen GPS, a reversing camera display and comprehensive digital convergence via USB/Bluetooth functionality. Luggage capacity, at 442-litres, is 34-litres greater than Citroën’s C4 hatchback.Powering Citroën’s compact SUV will be a range of the French brand’s latest engines. The front-wheel drive models will make do with a 1.6 petrol unit good for 88kW/160Nm (shifting courtesy of a five-speed manual transmission) with an option of 1.6 and 1.8 turbodiesels good for 80kW/240Nm and 110kW/320Nm, each with a six-speed manual transmission.The only all-wheel drive model will use the 1.8 turbodiesel and headline the range. Citroën’s product planners will also offer a two-litre petrol Aircross to markets outside Europe, although final specification for this derivative - 105 or 130kW - is still to be confirmed.The C4 Aircross, Citroën’s first proper SUV, is expected to reach global markets in the fourth quarter of 2011.