Good news! I've got information relevant to you. I grew up in a locale that would drop below 0F for most of the winter. It was NORMAL to get an oil heater and plug it into your 110v 15amp outlet outside.

Well with EV's you get that same cable, and plug it in and it accomplishes basically the same goal but for the battery instead of the oil. Even better it trickles "fuel" into your "tank" over night.

Or if you splash out dolla bills, you can get a dryer plug installed (240v 50amp) which fully charges your EV in a couple hours and keeps it nice and warm all night.

Everything else is the same, you put snow tires on it, drive to the slopes, skii all day, drive home....one difference though, its heat is available within seconds unlike my old car which took 10+ minutes in subzero temps to heat up and blow warm air. Heck, my EV has heated wiper fluid. That's pretty cool.

oh... and here's some extra cool parts.... if you do the Airbnb thing somwhere, your "fuel" is included. Just plug it in to their 110v outside outlet. When driving back down the slopes, you know what it does? It CHARGES THE CAR! You get free "fuel", just for driving back down the hill.

In all seriousness, a couple road trips with mine, in both 100+F and below 32F, I found out that all of those things don't matter. Yes winter tires wreck the efficiency, yes cold wrecks the efficiency, but it's still well over 200+ miles. All the extra convenience is so nice, that you really don't want to go back.

One example, I drove the same route to the beach at different times, one in the winter, I got there with 31% battery remaining. The same trip in the summer I had 55% batter remaining. So, like 1/3rd a tank of gas left, or half a tank of gas. Both are FIIIIINE. Know what I didn't do? Go to the gas station. I just plugged it in to the slow ass 110 wall outlet since... I'm at the beach for the weekend, in an airbnb... I don't know how long it took, because it was charged when I was ready to leave. Honestly, how do people not see how convenient this is?

Battery life is pretty widely available for Tesla's at least since they've been around for over a decade now. And like any car, it depends on how the owner drove it and maintained it. Some last forever, some are trash within years.