When you fill up do you tell the Insight how much fuel it took to fill the tank? My Citroen van, you just tell it you have filled up, not how much. With the ScanGauge you actually tell it how many gallons you put in (or should do). I have yet to run the ScanGauge for long enough to do a second fill up, but I am looking forward to seeing how accurate it is once I get to a third and subsequent top ups.
I must admit though, your figures for up and down hills seem wrong. There is a setting in the setup to correct DFCO errors.
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