Volkswagen will unveil its Caddy TGI Bluemotion at the Geneva International Show next week - the first vehicle in its segment to be fitted with a dual-clutch gearbox.

The van,which runs on either CNG or bio-natural gas has a range of up to 500 miles, in the pure gas mode.

The CO2 emissions of the Caddy TGI amount to 112g/km in the short-wheelbase version and 116g/km in the Caddy Maxi version in combination with the six-speed manual gearbox, and 123 g/km* and 126 g/km*, respectively, with DSG (*= provisional data).

The new Caddy and Caddy Maxi TGI Bluemotion are equipped with high-pressure tanks especially designed to hold compressed natural gas.

These tanks, which hold a combined 26kg of CNG (37kg for the Caddy Maxi) are mounted under the floor, which means cargo space remains the same – up to 3,200cu m in the Caddy and up to 4,130cu m in the Caddy Maxi.