It's an issue to consider when purchasing an EV and one of the tradeoffs. It varies model to model depending on the presence of heat pump, how the battery cool

It's an issue to consider when purchasing an EV and one of the tradeoffs. It varies model to model depending on the presence of heat pump, how the battery cooling/heating system works, etc. I think longterm we will need more detailed mpgE/range numbers for EVs than the old school city/highway EPA numbers. Something like a grid of 30F/70F/90F x 25mph/60mph/75mph x HVAC on/HVAC off. As with many things EV, Tesla is still ahead of the competition on this as you can see on the graph. So Tesla generally has more range to spare (300mi++) relative to competition (mostly 250mi-ish), and then performs better in winter against the stated range. On the plus side if you have a garage you can plug-in at night, schedule charging, pre-warm the cabin, jack up the seat heaters, and pre-condition the battery all on shore power, so cold won't have as much of an impact on the outbound trip. However on the return if the battery is cold soaked you will definitely see an impact. The other major EV difference is the range vs speed curve is different than for gas cars. Gas cars the ICE engine has a certain minimum output which is generally wasted at lower city driving speeds (plus no regen braking unless hybrid). This is why ICE have higher mpg/range on highways. EVs however its mostly a function of wind resistance so the faster you go, the lower the range. This can be quite noticeable at highway speed going 55-60mph vs say 75mph. Porsche Taycan has made some attempts to remediate this with having a 2 speed transmission, but I think we'll see more experimenting in this space.