DougWantsALeaf wrote: ↑
Tue Feb 02, 2021 4:58 pm
So I hope your M3 has capacity for a 2 sigma loss in range/capacity and still stay within your needs.
I hope so too.
Figuring out degradation in my car is something of an assumptions game because Tesla sandbagged the range when the car was first released. EPA *testing* (not the window sticker) reported 323 miles and my car now reports in the 314 - 317 range, so perhaps ~ 2% - 2.5% degradation in 2.5 years although in the last year the range has not decreased.
As for the anecdotes you love to find, we have discussed them before. Some charging routines lead to poor BMS calibration. There is little reason to think the outliers are anything but artefacts.
So I'm pretty confident in saying that the 2 sigma annual degradation is no more than 2% a year in the Model 3, and my car is fairing much better -- perhaps 0.5% a year after the first year. I'll have more confidence in my car's degradation rate in a couple of years ... if I continue to monitor. If there is no degradation next year either I'll just call it an issue for the history books and check the range if I ever decide to sell the car.
I've thought more than once about swapping the car for a 400 mile Model Y when that car comes out and continuing to buy used 1/2 cars for my wife since that easily covers her use case, but I like my car too much to be practical about it. I think it more likely that I'll replace 'her' LEAF with a future Model Y and keep the Model 3 as 'my' car.