Model S 2020 Long Range Plus Efficiency

[kinteseay]

Anyone know how rated efficiency is calculated, or is it retrieved from the vehicle. I have a Model S 2020 Long Range plus. Grafana is showing me a rated efficiency of 240 wh/mi. But I thought the vehicle was rated closer to around 280 wh/mi. So all of my efficiency graphs are showing low percentages because it is using 240 for it's calculations. I wanted to now if any had any insight. I also have a Model 3 and it is calculating 234 wh/mi. It appears to be correct. I just thought the 3 was rated a lot more efficient than the S. But maybe I was mistaken.