I don't know whether to take out an extended warranty on my Vectra. Its a 2008 1.8 SRi. The warranty will cost £260 a year, plus it will cost £75 for it to be serviced meaning a total cost of £345. So.... I know that its impossible to predict things that may fail, but what are the chances of something failing costing more than that? Would you renew? If it was a diesel then I would, but with it being a petrol...