Sudden Range Drop After 2 Years — Normal BMS Recalibration or Battery Degradation?
I’m curious if this is normal behavior or if anyone else with a Polestar has experienced something similar.
I bought my 2 Dual Motor MY24 in March 2024, and for almost two full years, a 90% charge consistently showed around 460 km of range. This stayed remarkably stable through two winters… until around December/January this year.
At that point, I suddenly noticed that a 90% charge was showing around 440 km instead of 460. At first, I didn’t think too much about it because it was winter: colder temperatures, winter tires, different wheel setup, etc. I assumed the car’s estimate was adapting to conditions and that things would return to normal once temperatures improved, so I switched back to summer tires.
But the opposite happened.
Since late April, a 90% charge now shows around 430 km. So in roughly 3–4 months, the estimated range dropped from 460 to 430 km. That feels like a very large drop in a short period of time, especially given that the battery had been extremely stable for almost 2 years before that.
A few details about my charging habits and usage:
- I normally charge to 80% daily use or 90% before trips
- I do a lot of small top-ups at home (even if I only use 5–10%)
- The car has only been charged to 100% maybe half a dozen times in total
- I’ve probably done only 10–15 DC fast charges in over two years
- The car almost never goes below 20% battery
- In more than two years, I only reached home below 20% twice, both around 17%
- Most charging is AC / slow charging
Overall, I’d say the battery has been handled pretty carefully.
My question is:
Is this likely real battery degradation, or is the Polestar BMS/range estimator recalibrating itself somehow based on recent driving patterns, temperatures, tire setup, etc.?
Does the performance update affect the range ( I asked this several times before updating, and the answer always was no)
Because losing around 30 km of displayed range in just a few months after two years of stability seems surprisingly aggressive to me.
Would love to hear if others have seen something similar, especially around the 2-year mark.
Note: before anyone asks, I'm not in Dynamic Range Mode.