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I keep seeing the citation that the Prius uses about 250 Watt-hours per mile. I think it is not right. I suspect the true number is closer to 100 to 150 Watt-hours per mile based on my experience.
Whoa, I've gotta call bu!!sh!t on this one. The energy equivalent of a gallon of gas is about 36kW-hours...are you saying the Prius gets 360 to 240 miles per gallon? Even 250 Watt-hours per mile would be 144mpg evquivalent - BS on that too. Now 600 Watt-hours per mile I can believe.
Didn't someone in here say that electric power to the wheels is about 90% efficient and gasoline is 10% to 15% efficient -- so (taking the best ratio of 9x) your Prius numbers go to 40 to 26 mpg. No?