First, I want to mention that I suspect this range mismatch with EPA is probably not an issue as N..8 has pointed out that TeslaFi models used to compare to their car and for me, the 5 models used to compare to mine, all show similar ranges. Also, I haven't seen any responses yet showing 310 mile range when new for the 2024 models. I think this is likely the norm and if someone buys a new 2024 with an estimated range of 310 miles, I believe now that it would be the exception. This would imply it is NOT a battery issue or maybe not even a BMS issue, but probably a change in the way Tesla adds buffer to ensure users don't go to actual zero and maybe even to prevent charges of NMC batteries to a full 100%.
Again, just check the energy. That’s what matters.
The energy screen only shows range based on driving habits. The concern in this thread was that when new, the range shown on the main driving pane should showed the rated mileage for the region. So in the US, 100% should show 310 miles, and if you set the charge screen to 100%, it should show 310 mile limit. Instead, with 3 miles on it, it calculated to 301 miles for me and when charging to 100% to test showed 304 miles. Once you know the battery when new is healthy, switch to percentage and just get estimates based on trip calculations and you are golden. On my previous car, I bought it from someone who really babied it and it was at the full rated range 6 months and 4600 miles after purchase (310 miles on the 2018 Model 3 Performance). I was expecting 310 miles here since the EPA range was rated for 310 miles on my model (Model Y Long Range). This is what set my expectation.
With all that said, see my above statement as I think it is something Tesla is probably doing with all new Model Ys. If it was isolated to a few, I think there would be cause for concern, but with everyone seemingly experiencing this range, it is probably the norm rather than the exception and I'm comfortable with the fact it starts with 301-304 miles.
For reference, my car had 3 miles on 26-Mar-2024 and as of 08-Apr-2024 it has 851 miles. Here are my Enhauto Commander Stats - Battery page:
Nominal when New = 82.1
Nominal when Full = 79.1 (just 0.62% lower than yours)
Remaining Capacity = 49.0 (drive screen on my car shows 60% currently)
Energy Buffer = 3.6
Degradation = 3.63
Cell Imbalance = 10.0
I got this commander transferred over to the Model Y at about 300 miles (I think) and the numbers are the same as then. It looks like they calculated degradation based on (Nominal when New - Nominal when Full)/Nominal when New *100%, but with the range estimate being close to what it was when new, Nominal when New was never actually 82.1, so I'm not sure if that is a reading from the car itself. If the buffer listed was 3, that would explain it, but if you add the buffer to the Full value it is greater than the New value. (shrug emoji)
Tesla Spy sounded interesting, but it looks like they no longer support Android - no reference in Google Play.
