[ZeroGravitas]

There's guides online for this.

Things I remember off the top of my head:

* there's generations of Leafs, and later ones are better in terms of battery management

* there's a device you can buy and an iPhone app to get better, in-depth info from the battery on a car you intend to purchase

* It was high temperatures that were the achilles heel for early Leaf's so watch out if you live somewhere like Pheonix or if you suspect the car came from somewhere similar

* make sure to check out all the various rebates available for new leafs (from state, federal and utility companies, and group buy offers) to make a fair comparison with a used model.