No. Sorry. Making the claim that most tesla owners do X is in my opinion horseshit. Tesla should be ashamed of themselves and should be sued into oblivion for false advertising. This is not a +/- 5%. This is a massive lie and a coverup.

They use the official process. Sue the EPA.

Sort of. The official process comes in a couple different flavors, and there are absolutely ways to game it. It's not like EPA is running the tests themselves, they just write the rules. Also, AFAICT there is no penalty for sandbagging (see also Porsche). Tesla could give realistic numbers but instead ran the tests in the most optimistic way possible and chose the best numbers they could plausibly claim to be EPA formula.

The VW method!

Except the tesla numbers are realistic, you can check for yourself: https://www.fueleconomy.gov/feg/browseList.jsp

Those seem orthogonal, and not related. I assert that yes, most Tesla owners just deal with it. But yes, it's unacceptable and Tesla should be held to account for it. Both can be true.

Polestar does the same thing.

https://www.youtube.com/watch?v=U3P32TyLMMM&t=644s

The EPA recommended system is pretty accurate and conservative, according to the article. Mercedes is supposed to use it and has more accurate estimates. Tesla is still using their own math from before the EPA had a plan.

Meanwhile, what difference does it make if most Tesla customers do X? Tesla now has enough customers that hurting 10% of them is a major impact.

No. EPA has 2 different processes and the car maker can choice what they want to use.

EPA process 1: use standard formulas. This is what Mercedes does and is more conservative and seems more accurate.

EPA process 2: Run tests and justify your numbers, essentially there to grandfather in range estimates from pre-2020

EPA should also add multiple range estimates say at 70mph, 80mph. Lots of people drive 80mph+ on the highway.

And buyers should be made aware they will be using only 70% (10 to 80) of the battery between highway charger stops. Charging gets really slow after 80%.

I agree on both counts. More data would be better. And for fun they could just mandate it across-the-board. It would be halfway interesting to see the impact of heating/cooling and speed on ICE vehicles too.