I calculated that a Leaf should break even with a Prius at about 120k miles as well. Of course, that was the 2012 Leaf, which was $4,000 more than it is now, an

I calculated that a Leaf should break even with a Prius at about 120k miles as well. Of course, that was the 2012 Leaf, which was $4,000 more than it is now, and less efficient. Now you can get a 2013 Leaf S for $21k after government rebate, which is less than you can get a Prius II for, so you break even immediately. Anyway, it's true that it would take me ~20 years to break even with the 2012 Leaf, but I wasn't optimizing for economy. I was optimizing for the environment.