As far as I know, they have not released the methodology behind that data. There are a lot of doubts as to whether it is truly showing the benefit of autosteer

As far as I know, they have not released the methodology behind that data. There are a lot of doubts as to whether it is truly showing the benefit of autosteer (in the autopilot sense) and not just the benefits of the other safety systems that were enabled around the same time.