**Our Tesla Model 3 Proves EVs Are Cheaper When Charged at Home**
*...using Tesla's Superchargers cost the equivalent of ***nearly $9 per gallon**...
This doesn't seem right to me. The last time I tried to figure out equivalent costs in gasoline, supercharging fell somewhere between half the cost of gas and equal to the cost of gas. So how did C&D come up with $9/gallon?

During the first 24k miles, they state that their Model 3 Long Range AWD averaged 83MPGe, which is a good bit higher than the

rated 121MPGe. Ok, I can see them being a bunch of lead-foots, but they never explained how they came up with this value. The car itself doesn't report MPGe, correct? But let's accept that figure for now - it's not unreasonable. They then say that IF they had performed all charging at superchargers (at a cost of 26¢/kWh, which is a reasonable assumption for supercharging), that it would have cost them 10.4¢/mile, giving a total cost of $2,496 over 24,000 miles.

Let's see. They're comparing to a BMW M340i that has averaged 26 mpg. Over 24,000 miles, at $2.80/gallon (rough current price for premium in Ann Arbor, where C&D is located), gives $2,585 spent on gas.

So, in what universe does this make supercharging equivalent to $9/gallon? I think it's obvious that it's closer to $2.70/gallon.

The culprit is this MPGe figure. It's the "precise amount of electric energy that's equal to the energy in one gallon of gasoline". Which is fine if you want to compare energy sources, but TERRIBLE for comparing vehicles, given that EVs are 80-90% efficient while CVs are 30-50% efficient. And so another generation of C&D readers comes away from that article mistakenly believing that EVs are more expensive to drive.