I have had mine for a couple of weeks and have hardly used the ICE. However there is a list of conditions that must be met to get EV only. This are listed in the manual and it has been discussed in other threads. Here is what I do. You can't run EV if the HAV heating is selected to a temp higher than the car is currently as the engine warms the car. I just have HVAC off (soft button on HVAC page) as I like the car cool (if you want car cooler than ambient AC will work in EV mode). Normal mornings no problem and the residual airflow through the car keeps my windows and screen clear. Damp mornings I switch on demist it restarts the HVAC and the engine to warm the air and clear the windows. It takes surprising little time. I then switch off the demist (hard button not on the screen) re press the EV button engine stops EV continues. Don't forget the heated seats if you are cold. My car is showing well over 200mpg as I have not used the Ice except as described above (175 miles covered so far 90% in EV only) The PHEV makes great sense for me as I had an MG5 but daily was doing 25 miles or so. EV infrastructure was driving me mad on longer journeys. too many EVs, too few available spaces, too many Apps/RFID cards, too many not working etc. Hopefully that will improve.