How fast are you driving to get that kind of drop? That's a lot worse than what I experience. I find I get the EPA range driving 55 in the summer.

If you live anywhere will hills, wind, or cold weather you'll experience this

I don't get a 40% drop in range even when it's -20 out. I lose about 25 miles range off the top iff the car was cold soaked before I leave, and then I lose about 20% range steady state.

“That kind of drop” makes it sound like they’re doing something wrong. The EPA test is done at 55, so it makes sense that you get the same number under the same conditions of the test. And since energy usage is exponential vs speed, anything faster will show fast. If they live in hilly and curvy, add that to the math and you’ll find that it’s more likely that you’re the odd ball and will be asked “how slow are you driving to get that kind of mileage” instead.

Don’t know where you live but it’s rare for traffic to move at 55 in many places. Either in city 25-45 or 65+ highway.

It is totally legal and fine to drive the EPA 55mph in places where traffic normally moves at 70, but must also recognize that when semis have to go around those vehicles, they cause ripples through traffic every time and increase risk of collisions for everyone.

  >And since energy usage is exponential vs speed

Doesn't energy usage vs speed scale as O(n^2), not O(e^n)?

Pretty normal for most EVs to vastly overstate range. Rivian is the exception in my experience. But yes they’re very sensitive to terrain and temperature even if they aren’t exaggerating range.

Asking how fast they're going is a reasonable question. If they're driving over 75mph, a 40% range drop is not surprising.

An ICE car comes nowhere near it's EPA rated mpg ratings at over 75mph either.