Shocking : Tesla Model S gets 26.5 mpg

Austingreen's post on refining is pretty good. It looks like all in (coal/electricity/nat gas), refineries need ~.75kWh of equivalent electricity (EE) per gallon of fuel (gasoline/diesel/jet fuel/propane).

Given the figures from the Greet model, that means nat gas used on site could generate another ~2.2kWh EE/gallon and coal is another ~.15kWh EE/gallon. The only unknown is how much electricity is used for onsite refining, but that's probably +/-.25kWh EE/gallon.

All told, the electricity/coal/natural gas used in extraction/refining could provide ~3.35kWh EE/gallon, assuming equal refining efficiency. Of course, that's not accurate, since gasoline is least efficient in terms of refining. It's not a huge difference, but adjusting for efficiency probably adds ~.1kWh EE to gasoline and reduces diesel/jet fuel/LPG by ~.1kWh EE. We also run E10, not RUG in most places, which bumps up the EE by another ~.1kWh/gallon.

This puts us at ~3.55kWh EE per gallon of gasoline. At the national average, a MS 70D could travel 10+ highway miles on the electricity generated by the natural gas/coal/electricity needed to create a gallon of E10 gasoline. In states where gasoline production is more energy intensive and has less energy, like CA, something like an i3 could go 20+ miles in the city on the EE needed to create that gasoline.

All things considered, an EV could go anywhere ~10-20 miles on the electricity we could get from the energy (coal/NG/electricity) we put into making a gallon of gas. Not the electricity. Not the energy. But the electricity we could get from that energy.