Quote:
Originally Posted by Jfheisenberg
How you calculate your mpg? The mpg indicator in my brz keeps changing so idk what the real number is..:I just got the brz like two days ago so thats why im asking ...
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http://www.wikihow.com/Calculate-You...fficiency-(MPG)
I don't think you need to do the subtraction part, since our cars can measure trips. That's only if you are going off of the total miles driven odometer reading, if I'm not mistaken.