I totally disagree with your statement about Tesla fudging their numbers. Your claims has no facts and is just your opinion and frustration against Tesla.
Actually most of my frustration is towards the EPA, and the amount of leeway they give companies when it comes to EPA range testing. The EPA allows companies to reduce stated range of their vehicles, and there is also an allowance for using the same EPA range on variants whether they have the same range or not. That makes real world comparisons hard.
They're the ones that allowed Tesla to use the same 310 mile EPA range for all the variants of the Model 3 LR despite them having different EPA range.nLike the Model 3 LR RWD one has a real EPA range of well over 310 miles, and the Model 3 Performance with 20inch tires (how its sold) has a real EPA range quite a bit less than the advertised range.
The EPA also has no requirements when it comes to temperature for EV range testing. Now sure temperature doesn't play that big of a role on long range freeway driving (aside from heat), but it plays a large role in daily driving.
I do have the Performance Model 3 performance, and I knew before I bought it what the REAL range is. So I didn't write the previous post out of anger. I wrote it to advise people that Tesla in particular is fairly optimistic when it comes to range. That you likely won't get stated range especially in the winter.
Now maybe a more fact only based approach would work better.
For the summer this chart is pretty accurate.
Tesla Range Table - Teslike.com
It also talks about some of the stuff I find frustrating about the EPA range.
Another way is to simply have them use a better route planner.
A Better Routeplanner
That way they can plug in what their route is, and get a real world range estimate for whatever configuration they have.