Since we've only had our PHEV for a week and this is our first hybrid/plug-in car, we’re still learning its nuances,
1. Just outside Philly. So while still chilly, we've had no snow yet and mild temps.
2. The car warms up much faster than other cars we've owned with similar features (cabin, heated seats, heated steering wheel). I actually find the steering wheel gets too hot, which is kind of a bummer. It certainly feels odd that after dropping the kids off at school the engine temp is still cold - because of running solely off battery.
I’ve been using the Access app a bunch, though it was down all day yesterday. From there I can program the car to warm up at a certain time, weekdays only, and which accessories (cabin, steering, driver seat, and passenger rear seat). Pretty slick, but not sure if I’ll continue paying for that after my 1-year trial expires.
While I don’t have nearly enough time with the car to give detailed impact numbers, the previous comment feels accurate. We’ve been experimenting with drive modes and have charged a few times mid day, but I think I’ve been getting 20 miles+-, on EV+, while staying nice and toasty. The scheduled morning warm up happens while the car is still plugged in, so I’m not sure if that pulls on the battery or the charger.