TimothyHW3
Active Member
Out of all these Apps, Stats and TeslaFi are the most innacurate in reporting anything. Apps that connect to Scan My Tesla are more correct, but I know at least one, where the developer doesn't really understand how the rated range works, so his app, even though connected to SMT, reports false data, because he adds custom calculations.Stats uses the temperature dependent SOC, so part of the Rated Range degradation could be real deg, some could be BMS drift, and some is temperature in Winter and the shoulder months.
So the only real way to test these things is to drive 100-near 0% and see how much kWh you get out of it. I have done this on two occasions, one on camera, and the values corresponded to SMT within 0.5kWh.
Also, like I pointed many times, BMS unbalance or real degradation - result is the same, less range.
I have a video of a guy that has a pretty big degradataion (BMS unbalance, whatever), that only gives him about 67-68kWh from 100 to 0% or about 70-71kWh nominal full. So if the BMS thinks you have 70kWh or whatever - even if the battery has more, it doesn't matter.
But this is really the only guy with so bad degradataion I have seen out of the dozens and dozens I have checked and he basicaly Supercharges all the time, because of referrals, drives very fast everywehre in Europe and even up north in the polar circle, and does a lot of 0-100%. He actually did, twice, go all the way down below 0% to true 0, even using the buffer until the car didn't move and needed to be towed and as far as I see his Model 3 is roughly at 60-70,000km at 18 months of ownership.
So if a guy that basically beats the car down as humanly possible can manage as much degradation after 2x or more the mileage, with a guy who I am pretty sure basically baby sits the car and most likely doesn't supercharge that much and is only at 17k miles, then this is def not normal.
Bjorn Nyland also did a Degradataion Test and is at 72.6kWh at 60,000km with his P and he also supercharges like crazy (65% or more)
So yeah, so huge of a degradation some are reporting is def not normal at 15/17,000 miles. I wouldn't be ok with it.