Re: SAVE 5 miles per gallon......
Maybe their pump calibration is off? A gallon might be a little less than a gallon when they pump it. That's a 10% or so discrepancy. With an SUV that gets 12 MPG, so the next tank it gets 10.8 - hardly noticeable and easy to rationalize why. Apply that same 10% to a car that gets 50 mpg, and the 5 mpg difference is more noticeable.
The state should inspect them to be sure they aren't cheating folks.
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