Tesla Motors Club

OK, I promise that this is not another "Why can't I get the rated range on my Model 3?" question. I'm just trying to figure out how the EPA rated range matches up with the EPA's MPGe and kWh/mile ratings

Looking at the EPA ratings on fueleconomy.gov for the Model 3 AWD, Performance and Standard Range+ I find these stats:

Model 3 Performance and AWD (same stats):

• 116 MPGe
• 29 kWh/100 miles
• 310 miles range

So we know that the Long Range Model 3 (RWD, AWD and Performance) all have the same 75 kWh pack, right? So if a car has a 75 kWh battery pack and the EPA rating says that the car uses 29 kWh to go 100 miles, then you divide 75 by 29 and multiply by 100 to see the actual range, right? 75/29*100. That's 258.62 miles.

In order to get 310 miles of range out of a 75 kWh pack, you actually need to have a car with an efficiency rating of 24.2 kWH/100 mile (242 Wh/mile). And I believe that is where Tesla is getting its "310 mile range" spec.

I know that it is *possible* to get 242 wH/mile out of a Model 3 LR AWD or LR AWD/P but real world numbers tend to be a bit less efficient than that. But real world vs. theoretical discussions aside, how can the EPA rating for fuel efficiency on the Model 3 AWD be 29 kWh/100 miles and yet the rated range be 310 miles? The numbers don't seem to add up.

Is my math wrong?

Screen cap of EPA ratings attached.