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MPGe is a fictious number dreamed up by the EPA to encourage EV uptake. Yes I know based on BTU's in gasoline.
The average coal burning plant is 33-40% efficient. His 140MPGe could really be 46-56. 42-51 including the 10% that's lost in the grid.
If I account for the 3kWh required to produce a gallon of gas, and the energy used by tankers (ships and trucks) to transport it, my Prius sits at ~48mpg.
The true MPGe varies wildly depending on where you live. Measuring at the wall is only relevant in the hypermiler sense of improving your own stats.
Last edited by oldtamiyaphile; 01-06-2016 at 08:59 AM..
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