@TexasEV, I agree that
@007Bond's numbers aren't of particular concern yet. I think 7 miles is within the normal flux of a battery. In addition, the number has been decreasing over time, which sounds like normal degradation.
@diamond.g, Are you concerned about your 267? Has it been slowing going to that level over your ownership? What is the most miles you've charged to at 100%?
I got a reply from Customer Service via email about this. The first paragraph is just false from my understanding. I believe it even says in the manual range estimate is how much energy is in the battery multiplied by a fixed rate. Second paragraph is not applicable. Third paragraph is close to being applicable.
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Tesal reply:
Thank you for reaching out to us here at Tesla Customer Support. As for your question about the battery degrading, after reviewing your vehicle, this would not be the case. You will see small changes in range as the vehicle processes your driving style. You can see this range go up and down depending on what features, options, and driving style. We have seen ranges go down by a few miles due to customers using quick accelerations from stops, higher speeds of travel, etc. The Tesla will analyze the driving style and adjust to give you a more accurate range. Some customers have changed driving styles and what features they use and seen an increase in range as well.
Majority of the time, showing range loss that you are advising of is due to overheat protection and mobile app usage. If your vehicle is in Sleep Mode and you use your app to check power and range, the vehicle will wake up, using more power, to advise you of the information you are requesting. The range you have advised does fall into the normal range of loss that can happen throughout the day.
As for your concern with possible "Battery Degradation", if you see a dramatic change, such as 10% or above.. ie. 303-302 and now getting 250 at 90%, then we would want to get your vehicle to service. Your Tesla will always try to give you the best and accurate information as to keep you informed.