Bjørn Nyland is doing winter range testing with the ID. Buzz 82 kWh model.
I'm cautiously optimistic my future EV (several still on order, including ID.4, now for the past 8 months) will be able to meet my expectations in this type of weather. We haven't had a particularly cold northeast winter in a while, but we already have had a stretch of <25F weather for the past few days. Late January into February usually brings a few week-long stretches of <0F. I'd love to have more sub-zero F (-20C and below) temperature data to put my mind at ease that this car won't be a mistake.Also would point out that -4 C is about 25 F, which is not all that cold--at least for Colorado. It's not at all uncommon to get into the single digits F here, and well below zero in the mountains. Pretty much every morning for most of the winter it is below freezing.
COP of 1 at ultra cold temperatures is perfectly acceptable to me as well, but at those temperatures, a completely frozen evaporator would stop the heat transfer entirely, no? I guess you're saying that R744 wouldn't suffer those consequences because it is CO2 based and a properly balanced system should be able to provide a larger efficient operating range without potentially freezing.COP of 2 at -20C is quite acceptable.