From the day it was delivered fresh from the factory, our PHEV has never been able to do 30 miles on EV. I ran a few tests when it was less than a month old - in warm weather, on flat, empty roads, cruising at 30mph with the aircon off - the best it could achieve was 29.5 miles and it was like driving a milk-float.
The first winter we had it - about five or six months old in Southern England with the temperature just below freezing - I reckoned that I was doing OK if I got 16 miles on EV. There certainly are people that get better - generally by turning the heating and aircon off - personally I didn't pay over £30,000 for a car that I have to drive wearing three layers of clothing and with condensation running down the windows.
Four years later and with about 46,000 miles on the clock the range has decreased. I doubt that it can do better than about 24 miles on EV in warm weather and even on relatively mild winter days 17 or 18 miles is the tops.
