WLTP of 250 miles would turn into a reality of 130ish in winter. I can imagine a lot of people very unhappy with that outcome. I’d also expect the size to make it one of those that will lose range very quickly if you keep to the speed limit on motorways.
I would doubt you would lose 120 miles in winter, more like 20 to 30 miles.
So, some indication of my thoughts on range. WLTP is fiction. I’d expect a car quoted at 250 miles would give 200ish around town with a little A-road type driving in the summer. Go on motorways and that’d drop. Again drop the temperatures and the range would drop further. So, at a steady 70 at temperatures near freezing I’d estimate the return to be around 130 miles, partly because it’s a big beast with not a lot of aerodynamic efficiency and partly because just about every electric vehicle loses range in the cold.
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I'll try to give my honest opinion but am always open to learning.
Mark