You can drive an electric car with only two 12v car batteries!

[dmallind]

18. The bugger with EVs is "it all depends"

Certainly ICEs can get varying mileage too due to driver variation, but our "fun car" Mustang GT convertible (kinda blows the "green cred" of the Leaf) will never get more than 25 or so on even the gentlest cruise, and my wife's Hyundai can never realistically get less than that as a tank average even driven by the most aggressive driver. Most drivers regardless of habits are going to average about 18-22 on a tank in the GT, 27-30 in the Sonata. Pretty small range. But Leaf drivers? EPA says 2.9 m/kwh. God knows they must have the Stig to get that low. Typical driver results are reported from 3.3-5.7 on an average charge over time on the Leaf forums, with hypermiling experts who can get in the 6s now andagain. A much greater range as a ratio.

I don't know if it's because not everyone has standardized the "EV drive" yet with its emphasis on reducing braking and quick acceleration followed by coasting, or because of the technology (although you would think gearless consumption would be more linear) but for some reason YMMV has never been more true than with EVs.