Re: Discrepancies between Energy Monitor and actual MPG
There are some limitations to the accuracy of both the energy monitor and the manual method of calculation. The manual method is fairly accurate for 3-4+ tanks, but on a tank per tank basis there is a high probability that there will be a significant discrepancy. As far as the energy monitor is concerned, I have a feeling it may "miss" some portion of the data that's available because it's basically a really slow and simple computer, and thus can't handle the full amount and speed of the data, so sometimes it will drop the moment of data that may include a very high peak consumption, such as a brisk acceleration... That's my feeling, not scientifically validated, but I can compare it with some other tools for reading data from the vehicle, and the built-in display seems pretty limited.
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