IDK. I've declined the tracking with State Farm, and I drive pretty conservatively. I might speed by 5mph or so but I really try to watch traffic and minimize my need to accelerate/brake as it does result in better fuel economy (and saves wear on the brakes). The MPG on my cars absolutely drops by 2-3 MPG when my kids are driving. I just reject the tracking on principle. There's too much incentive for the companies to monitize this data once they have it, and most of us know that really anonymizing data can be quite difficult.

> people who consent to tracking tend to be safer drivers because they aren't afraid of the insurance company seeing their driving habits

Is that true? The handful people I know who have/had these devices are definitely wouldn’t fit that category. And most removed it after a while because their premiums went back up (because of their driving). They just chose it because it offered cheaper rates and they all said the companies promised it would not raise rates above what they were already paying. So it was a “what do I have to lose” decision.

Obviously anecdotes aren’t data. I think it makes sense that the drivers that are egregiously unsafe (and know it) will avoid them. But it would take seeing actual data to make it clear to me that the majority of people who consent are safer drivers.