I'm looking to buy a secondhand, seven-seater car that runs on LPG. I wanted an LPG car because I'm looking for a way to save money on fuel costs. However, I never had an LPG car before. I've shortlisted two cars but one of them is not LPG so would like your advice on which one is better to buy. The first is a 2009 Vauxhall Zafira, Petrol/LPG, 98k miles for £1150. I asked the seller if the timing belt was changed and he said no, but also told me not to worry about it because this is a petrol car and that diesel cars are the ones that have problem with the timing belt. Second is a 2007 Vauxhall Zafira B 1.8,16v design, diesel, 93k miles for £1195. It has a full service history, stamp, cambelt was changed at 88k miles and was well looked after.