Citroen will reveal its C5 Airscape concept car, featuring a carbon fibre folding roof, to the world at this year’s Frankfurt Motor Show.

The four-seater C5 Airscape’s key characteristic is the automatically folding top, complete with integrated sunroof and textile lining.

The C5 Airscape also showcases some innovative technology. Fuel economy is managed by an ‘UrbanHybrid’ system that includes a reversible alternator-starter and super capacitors. This system allows onboard equipment, such as the air conditioning or audio system, to be powered by energy recovered during braking and deceleration, while engine torque can be temporarily boosted when required.

The ‘UrbanHybrid’ system, which helps reduce CO2 emissions by 24g/km on the combined cycle, also switches off the engine when the vehicle is at standstill, before starting it again instantly once the accelerator is pressed.