2019 Model 3 LR RWD
9000 miles
I have owned the car for ~6 months.
For first 5 months,
80% = 261-263
90% = 290-292
100% = 323 and 325 (charged to this level twice and car was driven right away on both occasions)
Charging habits:
Charge to 80% nightly
Charge to 90% two times a week (I drive to work only twice a week, which is a ~170 mile round trip. On these days, I start at 80%, get to work and charge to 90% (free juice). I don't really need to charge, but you know..."free juice, will have". When I get back home, I plug it back in at 80%. On other days, I sometimes drive around town and plug it back in at 80% for the night).
One month ago, coincidentally after a firmware update, I noticed that the estimated range started dropping with each charge.
80% = 259 followed by 257 the next time followed by 255 the time after
90% = 287 followed by 285 the next time followed by 283 the time after
It seemed odd that every time I was plugging the car in, the estimated range dropped by 2 miles after having been consistent for 5 months.
I chatted with a Tesla support person online who said that their remote diagnostics suggested that the car was holding less charge than other cars with the same mileage/age and suggested I bring it in to a SC.
I set up an appointment with the SC. The tech from the SC texted me saying that there was nothing wrong with the battery and that the 50%-90% cycling range was probably skewing the numbers. He suggested I bring the SoC down to 10-15%, then charge the battery back to 90%, unplug the car and let it sit for several hours for the electronics to re-calibrate. He then went ahead and released the service appointment.
I tried the above 3 times. It did not work but only dropped the estimated range further (which is where it is at now).
90% = 280-282
80% = 251-252
100% = 312
I set up another appointment with the same SC. Another tech texted back saying that the EPA of the car is 310 and that the battery is performing as expected. I told him that I have the RWD and not AWD model and that I have charged to 325 before. He replied back saying that it is expected degradation (so, just in a matter of seconds, he went from EPA=310 to expected degradation). I asked him if he can confirm if the loss is indeed degradation or merely a calibration issues. He replied a few days later saying that the battery is holding 97.7% charge and released the appointment.
So, basically inconsistent answers from 3 Tesla people I have spoken with.
I have set up an appointment with a different SC. Let us see what snake oil they have in store at this location.