Glos Guy. The car showed 40mpg after our run. I think it was showing about 26mpg when we started, but this was a brand new car with only dealer mileage on it and of course some of that mileage was run on battery. We didn’t reset it, so I can’t conclude much from the figures. My instinct is that on a long open road run it will get 40 where the X1 would get 47. On a short run of course it could be double that starting with a full battery. Overall with our pattern of use I don’t expect it break the bank, or make us great savings either.