For many years my wife and I have been buying the Vauxhall 2.2-litre Vectra as we like its combination of size and power, we also like the fact that the economy of the petrol engine is surprisingly good. However this engine size does not seem to be available with the new Insignia model and, as we plan to buy another car this summer, can you advise an alternative at a similar price? We usually buy a 3-year-old car and my wife just hates diesels!