The leaf is notorious for fast degradation in hot climates due to a poor cooling system. The model S, by 2018 anyway, sets the bar for both thermal and charging management. People outside of those climates mostly think about cold being a temporary range reducer, but if 40c is a normal or even cool summer day where you live, many EVs are simply off the table due to battery life concerns. The population of places with that sort of climate is growing faster than the others, so it really is worth addressing.
> many EVs are simply off the table due to battery life concerns
What EVs would be off the table? The Leaf is notably bad in this regard, as you mention, because the battery is passively cooled. However, all the other EVs I'm aware of are actively cooled and should be fine in hot temps.
It's an earnest question—I don't know anything except as a consumer who's shopped around for an EV, and as a resident of a hot climate I'd be interested in knowing what I need to look out for.
The spot checks I've done mostly show everything but nissan and gm having active cooling beyond a fan. But even within liquid cooling not all use the ac to keep the pack below ambient temp nwhen it gets too hot. I think kia and tesla are the only two I decided I was sure would be ok.
