[LogicDesigner]

“That’s because an EV’s operating range on a charge can be diminished by an average of 57 percent based solely on the ambient temperature, according to the results of a study conducted by the AAA Automotive Research Center in Southern California. That could leave, for example, the owner of a Nissan Leaf with an EPA-certified range of 84 miles with a depleted battery after driving a mere 36 miles in cold weather.”

I'm glad you brought that article up. It is based on a AAA study that was done on three electric cars: “The average EV battery range in AAA’s test was 105 miles at 75°F, but dropped 57 percent to 43 miles when the temperature was held steady at 20°F.”

In order to come up with his “36 miles” for the Leaf in cold weather, the author of the Forbes article made the mistake of applying the 57% range drop to the more “average” EPA range, rather than the more ideal 105 mile range at 75°F, like AAA did. In other words, the EPA range already takes into account some of the temperature drop, while the AAA study was comparing the high-end range to the low-end range.

Many Leaf owners, including ctdonath2 in post 47, frequently get that 100+ mile range. That is the starting point for the 57% reduction, not 75 miles (or 84 for newer Leafs).

[Kirkwood]

Wow. No. You want to use the mean of a sample. Certainly not the ideal. If you are going to fudge with numbers, then you instead should take the minimum to show what the worst case driver might expect.

[EVO X]

Many Leaf owners, including ctdonath2 in post 47, frequently get that 100+ mile range. That is the starting point for the 57% reduction, not 75 miles (or 84 for newer Leafs).

Living in the midwest where sub zero temps are a possibility, I wouldn't buy a Leaf if I had a 40 mile daily commute and no way to charge it at work. I'd at least want the range of the lower end Tesla S. If you run out juice in the summer it is an inconvenience. If you run out juice in the winter it might lead to frostbite or death..