Posted this a while back. The erratic readings was because I was towing a trailer thru the mountains. In the first part of the graph it was thru Colorado, in the last part it was thru Tennessee. The flat part in the middle was in town driving. You can see how low the first 3 or 4 points are, after I got about 1500miles on it, the mileage went up.
Took delivery on 4/30/07
Blue is Price per Gallon
Purple is MPG
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