The range I believe will be calculated using recent energy efficiency and other factors. Mine should show 330 tomorrow morning, but with 240 motorway miles plus 20 in urban traffic, I know the actual range will be sub 300. The more we use the cars the more we will get used to how they work. Saw a You Tube video and the Ioniq and Kona came 2nd and 3rd in an efficiency test, the SEAT mii came top, but it’s a tiny car. The likes of the Cupra Born and MG4 etc were a good 20% less efficient.