Fuel prices are a concern for almost all motorists so choosing a new car that can squeeze the most out of a tank of petrol or diesel is of huge importance to most of us. Going for a model with a headline-grabbing fuel economy figure can help you save money over many miles of motoring. That’s why we’ve listed the top petrol and diesel models for fuel efficiency here. Do be aware, however, that the greenest versions are not always the best cars in the range to go for – it can often be better to save money on the list price and go for a less economical model, or switch to a petrol car to avoid more expensive repairs. Economy is just one factor to consider but it can be a big one.