I want to measure the fuel economy of my car but I don’t want to use the dumb fuel-drive-refuel test. The gas station pumps stop arbitrarily long before the tank is TRULY full, so this just isn’t accurate. Does the OBD I or II have an option to measure this?
Originally posted 2009-04-21 10:07:58.
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they are called a Scangauge and can be found on ebay for $160
thats not how you do it. u start full, then drive X miles. the next time u fill divide the miles by the gallons. sure one tank isnt that accuate but onve 2 or 3 it should be right on. I have that MPG computer . its not that accurate… a calculator is better