Yeah, this is the rub. For those of us who don’t believe the gas gauge is accurate, making any mpg calculation is a toss of the dice.So heres a few pics of my fillups after I got my Rav4 "Fixed" by Toyota:
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Take this pic with a grain of salt; my effective MPG was calculated by using the distance travelled since last fillup divided by the gallons pumped in. This is under the assumption that the tank is filled to full. In the event that the pump prematurely stopped, or in the case of the tank being filled up to 413 DTE, it was a really hot day, so I dunno if that affected how much fuel was pumped in due to volume expansion. For example, if I travelled 300 miles, then somehow was only able to add 1 gallon before it shut off, I would have an erroneous calculation of 300.