Lurking some more on the UK site. I think the range calculator is as transparent as it can get - 4S defaults to the standard battery with full heating/AC on and the standard wheels. It suggests 188 miles on a 30% city, 40% country road, 30% motorway. For the larger battery, this is 220 miles. If you alter the temp scale from -10C (14F) to 35C (95F) and change the HVAC to Eco mode to off here are the ranges you get. I sure hope they are close to reality - they would fit my needs.