2021 R135 real life motorway range

I'm looking at a 2021 R135 Zoe. Last year i did 17000 miles in my current car, 90% on motorways.

Now you can get good rates charging at home I'm looking at electric, and wondered what current users actually get at journeys on the the motorway.

My commute is a 66 mile round trip, 45 miles at 70mph, about 16 miles 50mph and the rest 30mph.

In theory I can save over £100 a month in fuel, but this depends on actual range.