Vauxhall has started deliveries of vehicles fitted with its latest environmentally-friendly Dualfuel LPG/petrol engines - a 1.8-litre 16-valve that is now an integral part of the Vectra engine range and improved 1.6-litre and engines form Astravan and Astra cars.

Vauxhall says it intends to offer a Dualfuel Zafira people carrier early next year.