I live in a cold area, and in the depths of winter I was seeing the vehicle's average efficiency drop to as little as 1.5 mi/kWh—which theoretically equates to about a 90 mile range. Keeping the heater off entirely increases the range far more than it should, but on really cold days a heater is a necessity. On moderately cold days, heated seats + steering wheel (make sure you get this option if you buy the car) help me to keep the HVAC/heater off, thus increasing range a little bit.
The inability to effectively Level 3 charge the vehicle in even moderately cold weather is a major shortcoming which will likely be your biggest headache, as it exacerbates the range issue, and thus forces you to keep within a ~50-80 mile radius of home in the winter. I mostly L2 charge at home, but recently during a prolonged power outage (4 days), found the need to drive into town to use a DC fast charger. As usual, my charge speed averaged about 16 kW, and in an hour I'd added only enough energy for about 35 miles of range. I essentially broke even on the ~30 mile round-trip drive into town and returned home with roughly the same charge I'd left with. For comparison's sake, some electric vehicles can Level 2 charge at a faster rate, or add 200+ miles of range in half that amount of time with DC charging, even in cold weather.
Those issues aside, with AWD, the vehicle does handle really well on ice and in the snow (with appropriate tires), and I have been pleased with all aspects of its driving and handling characteristics in poor weather conditions and on poor roads (i.e., un-plowed snow, heavy mud).
