It sure appears that Tesla's latest firmwares are all over the map with range. I wanted to see my battery degradation as a function of mileage and then I superimposed my firmware updates. In summary, my observations:
- NOTE:
- The dashed line is at the 310-mile mark
- The triangles represent new firmwares
- X-axis is odometer (covers about 18 months of driving), Y-axis is extrapolated range at 100% SOC
- You can see that around 22K miles, I got the firmware update to give me 325 miles. But it only lastest about 3 firmwares
- The uncertainty to this plot (and thus my extrapolated range) has jumped around significantly ever since the 325 mile firmware...just look at how consistent it was BEFORE 25K miles!
- I wasn't able to collect data from 23K to 25K due to an issue on my end
- With Tesla's wild ride of firmwares and resulting range, I can't really tell if I have any battery degradation...But after 35K miles I appear to be above 310. While I've got issues with my battery losing range for no apparent reason after my commute, it still has the ability to "start" above 310 miles.