They include climates in the study but only hot climates and temperate climates. Temperate climates perform the best of course, but that’s expected given the narrower temperature ranges.
I would like to see studies for cold climates. Here in Canada we have freezing temperatures for about half the year and sweltering temperatures for a quarter. The shoulder seasons bring lots of rain and temperature fluctuations. This mix of always changing temperatures and humidity (along with all the salt used to de-ice roads) is absolute havoc for ICE cars. It tends to rust them out a decades before the engines give out.
On the other hand, freezing temperatures are brutal on batteries (I know this from how my phone responds to the cold). I do know that a freezing cold battery needs a ton of extra energy to heat up before it can even begin charging. Having an EV in Canada without an indoor parking space for it is not a great experience.
I just got back from Quebec and vas surprised to see a ton of electric cars- like California levels of full electric cars on the road. I have to assume that most of them have made it through the winter alright, otherwise we’d be hearing about it. They do test these things in very cold climates before they sell them.
A battery also needs a ton of energy to become cold. It’s like 300-500kg of mass you need to freeze. Most cars automatically warm up the battery.
I’ve had an EV in Finland for 4 years now and it’s the best winter car I’ve had. -30 C outside and it’s literally T-Shirt weather inside the car within 10 minutes. Zero issues starting after it’s been sitting outside for a few days either.
