As somebody already pointed out, the range only comes out at 165 miles (actually 160) if driving the whole way at 70 mph and at -10°C. That's just not a realistic scenario. How often do we get temperatures of -10°C in the UK?We did consider an EV for the Mrs , her daily commute is about 40 miles so would be perfect.

The problem was she drives to her friends in Coventry every now and then and that is 150 miles.

We looked at various models like the Mini, VW and Kia. The range for all seemed okay 230-260 per charge but on one of the websites it said the range of their EV would drop to about 165 Miles for motorway driving.

As its all motorway to Coventry and the Mrs wouldn't want to risk running out of Juice before getting to her friends shes keeping the petrol car for now.

Also, you say it's motorway all the way but a) nobody has a motorway going to their front door and b) in my experience of driving in the UK, especially in recent years even on a motorway, you'll almost never be able to drive at a constant 70 mph without ever slowing down, due to traffic, road works, lane restrictions etc.

At a more normal temperature and more normal motorway driving average speeds the highway (motorway) driving range would quite clearly be more than 160 miles, and probably a fair bit closer to the mild weather figures.