Large petrol 4x4 SUVs are very thirsty and most carmakers do not offer them because the fuel costs are simply too high. It may be better to buy a petrol front-wheel drive SUV and fit a good quality set of all-season tyres. This will give you the extra grip needed to cope with rural roads in the winter months, while avoiding all of the common DPF and EGR problems that are associated with a low-mileage diesel.