It's really strange that they wouldn't ensure the BMS is calibrated to show 310 miles (EPA range) on the main mileage on delivery vehicles, leaving us to wonder if there is already something wrong with the battery. My 2018 Model 3 was 6 months old and had 4600 miles on it and still showed the estimated EPA range at the time. Seeing the lower number was definitely unsettling.I hooked up Tesla Spy the other day and it appears that Tesla started the BMS off with a 79.6 Nominal Full Pack. I understand the Energy buffer of 3.58 but this Nominal Full Pack is low for a car just off the line. This would also make since because of all the TeslaFi data showing all the 2024 Model Y's sitting either 283-285 20" or 300-303 19". Maybe Tesla has down a 2.5 ish kWh soft cap stop people from complaining about random degrade.
As of this morning with a 80% charge Tesla Spy is showing the below numbers:
Nominal Full Pack 79.6 kWh
Nominal remain 64.3 kWh (80%)
Energy buffer 3.58 kWh
Usable 60.7 kWh
Full pack when new 82.1 kWh.