Currently, there is no way to add electric fuel consumption in kWh. Without this, plug-in hybrid electric vehicles, which use both gas can appear to have very high MPG since the electricity consumption is not taken into account. Please consider adding electricity/kWh consumption to the site, so that there can be some reasonable comparison of fuel consumption efficiency between gasoline only, gasoline/electric vehicles, and even electric vehicles.
I did see
this thread about this topic.
One of the concerns was how to compare to MPG. The EPA uses MPGe, where the energy content of a gallon of gasoline is used to compare with electricity. Wikipedia
explains how to do the conversion as well as additional details.
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