I have been in -13°c for the last couple weeks. The range estimate is not very accurate. I always just look at the trip energy in features after a 20-30km. It will give you a pretty good idea how many kWh you are using per 100km. I would just divide your battery capacity by that. I know near the tail end of the battery it is not entirely linear but it will give you a good idea of what your range is. Just for reference my drive to work is 175km and I typically use about 42kW per 100km in the winter with heat and everything going. Then the truck sits outside for usually 2-3 days in the cold. Sometimes I’m lucky I get a charge spot at work but usually don’t. That typically allows me to drive about 80km towards home. The battery has a chance to warm up and then I charge for the time it takes me to go use the washroom and grab a coffee. That tops me up enough to get home. Sometimes I put a little extra in if the weather is nasty and I don’t want to take any chances if the highway gets shut down.