RAV4EV is faster, has longer range, and has a LOT more interior room. It has no factory DC Fast Charging, but there's a $3k aftermarket solution, if you need to be able to fast charge.
(My daily commute is 60 miles; it begins scheduled charging at home at 2:30am for departure at 5:30am, and is always "full" at that time.)
I have real-world range of 105+ in Summer, 85 in Winter. Using the heater costs me 20% range in Seattle, using "I want heat!" mode and not trying to economize at all.
Connectivity: Entune sucks.
It has "issues": parts break. You
must purchase the Toyota Platinum Used Car warranty (IMO).
I paid $3k for mine. Battery thermal mgmt system is top-of-the-line; batteries degrade slowly.
Leaf has built-in DCFC (CHAdeMO) support for fast charging on trips. It's a lot smaller. It has fewer "issues". The drivetrain is very robust and durable. Range is shorter, and batteries tend to degrade faster (air-cooled battery temperature mgmt system). Newer Leafs have less of an issue with this, but if you're in a very warm climate, it's an issue.
Connectivity: NissanConnect works.
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I was looking for a used Leaf when, during research, I stumbled across this site. After ten hours' reading, I knew the RAV4EV was a better fit for me, and I bought mine without driving it. I am in a three-vehicle household, so issues around downtime (due to the RAV4EV being in the shop) or a failed scheduled charge are less important to me than if it was my sole transport. I had a Tesla M3 reservation, and we are taking delivery on it next week, but not for me: I am happy with the RAV4EV and do not need an upgrade to the Model 3, but someone else in my household is buying it because their car is near EOL. If we didn't buy the M3, I was going to pick up another RAV4EV, that's how satisfied I am with mine.