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Battery Degradation MY since juli 2025 from 1.5% to 2.5%

Bug Reports

The first 67000 km my Tesla Model Y battery degradation was steady.

0.0% and odo 00000 km 15 december 2023
1.5% and odo 67175 km 2nd july 2025 : battery 77.9kWh
1.8% and odo 76176 km 6th of october 2025
1.9% and odo ????? km 14th of october 2025
2.0% and odo ????? km 16th of october 2025

2.2% and odo 79691 km 28th of october 2025

2.3% and odo ????? km 12th of november 2025

2.5% and odo 83285 km 26th of november 2025 : battery capacity 77.0 kWh

Can I get a download a report of the measured degradation since 2023?
And has something changed on ABR?
I suspect Tesla is using software updates to increase battery buffer ?

https://teslamotorsclub.com/tmc/threads/tesla-has-increased-the-buffer-in-the-tms-from-4%E2%80%AFkwh-to-6%E2%80%AFkwh.349166/

Where does this happen?
ABRP version number (found at bottom of settings menu)
Posted by Pascal ·
Status: Completed2 comments

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Comments2

  • Katya S. changed status to Completed
    Team•

    Jan 15

    Pinned

    Hi again @Pascal,

    As previously mentioned, there is no historical report available for download. We did, however, discover an issue with the calculation of battery degradation, which was rooted in Tesla not reporting the correct type of battery capacity expected for our calculation.

    This has now been corrected, as well as reported to Tesla.

    I'm closing this ticket for now since we haven't heard back. Please feel free to reply if you're still experiencing this issue, and we can reopen it to investigate further.

  • Katya S. changed status to Awaiting Clarification
    Team•

    Dec 2, 2025

    Pinned

    Hi @Pascal,

    No such report is available for download; it is not something we can provide, unfortunately.

    Have you perhaps changed your charging behavior? Battery degradation is calculated based on fast charging sessions; thus, if you’ve done more charging at home, we’d have less data to base it on.