I would think that since they are now using a 48V hybrid system that the stop/start system has changed in how it works. Actually it may have been eliminated.
Edit: According to this article the 48v system doesn't eliminate the start/stop. It enhances it and allows it to stop sooner.
" In addition to that, the 48 V generator allows the car to shut down the engine more silently and to start it more quickly than before, improving even more the start-stop functionality.
When the vehicle is softly decelerating, the combustion engine can be switched off so that it can be replaced by the electric generator itself."
https://www.bmwblog.com/2020/05/06/h...id-technology/