[NDizzle]

Anyone who has driven long distances in the cold (where you can calculate your mpg easily, as you are just driving all day, what else are you doing?) knows that is bullshit. My van that gets 20-25 mpg in the summer gets... 20-25 mpg in the winter. The only time it's affected is when I'm crossing the rockies. Mountains...

[epistasis]

And as somebody who drives an EV, occasionally in cold weather, I would also assert based on my personal experience that losing range is "bullshit" but I also realize that others have different experiences.

[NDizzle]

My RAV4 prime with "42 miles of range" hits 0 in 22 miles of freeway driving with the temps around 10F outside right now.

[epistasis]

That's exactly the sort of vehicle that has not been designed to preserve battery life in cold weather. Legacy auto manufacturers have not taken batteries seriously, and so I would totally believe that the tiny battery would not have the thermal management it needs to stay warm enough for maximum capacity.