Yes, I know the title of the thread will piss people off -- please bear with me. Read the entire post, take a breath, and read it again before replying. We've been claiming rated range doesn't including driving history (that Tesla is confusing Projected with Rated) -- yet we don't have the source code. Please read on and then provide the details I'm asking for. I think it's critical to understand that, e.g., just because someone's pack is replaced and their rated range goes to 272 on 100% charge does not mean that driving history is not included in the calculations. Perhaps the source code has something in it that resets the calculation when a new battery is installed. There are many possible explanations. So I think it's presumptuous on our part to maintain this claim. Read on for the thing that made me "question my faith." Until a few days ago, I was in the camp that believed rated range did not have an element of driving behavior included -- that it was essentially a fixed calculation of kWh available / 290 Wh/m; projected is what includes driving behavior. Recently, I was in Aaron.S's car (firmware 5.8.4) and rated matched projected at 289 or 290 Wh/m. Later that day, I noticed that my rated matched projected at 300-303 Wh/m (firmware 5.8.7; low SOC so high margin of error). It used to be ~310. So now I'm no longer sure. The Tesla engineering team has told me that rated range is a complex calculation -- far more than just CAC/whpm. Another interesting piece of detail -- his lifetime whpm is 337 and mine's 356. 289 * (356 / 337) = 305.3 -- that's suspiciously close to my 300-303 above (which could easily be 305 if I had measured at higher SOC; see SOC comments below). Of course, we have different cars -- I have "A" battery and he has "B" ... and our FW is slightly different but now I'm wondering. I'd like more data points from folks here: * What does your 30 mile average whpm read when your rated range matches projected? No estimates please! * battery revision (A/B/...) * firmware version * lifetime whpm * Mileage on your current battery The math will be more accurate at higher SOC (since comparing "10" vs. "11" miles is a 10% difference and "100" vs. "101" is a 1% difference) so try to provide numbers at higher rated ranges. Note also that this whpm difference may or may not be related to the rated range number. But the fact that these numbers can be different absolutely calls into question whether the rated range number includes driving history or other similar factors.