I have had my X for about 4 1/2 months and I am so pleasantly surprised at how little extra cost has been added to my PGE bill to "fuel" my vehicle. I only charge my vehicle during off peak time. My bill has consistenty been about $25 for that off peak usage for the month. That also includes any normal house things running in the middle of the night and all day Sunday electric usage. My electric company only charges transmission and distribution charges on mid peak and on peak usage, so this car's MPG must be incredible. Love my X!