alt Hacker NewsJust a note about Toyota specifically - There are many blog posts and articles out there alleging that Toyota shares your data with insurance companies.
As I own two Toyota's I have read through these carefully and consistently the theme is that the owner was opted into this program without knowing it (likely by the sales person clicking through setup steps to enable every feature). If you are not opted in, I have seen no evidence they share driving data.
When I set up my Toyotas, the app clearly walks through the programs they have and you must click either "yes/opt in" or "no/opt out" for each program. It is not opted in by default.
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This aligns with my understanding.
Before 2018-2019, the opt-in process for data sharing was hidden on a website somewhere. Around that time, the form became part of the vehicle purchasing process.
There was a recent class action suit against GM for this.
I've bought multiple Toyotas from the same dealer, and each time the sales person has been overly aggressive about setting up the app and connecting to the car. The first time I let them do it to a point as I had not seen what it did, but had to prevent them from syncing contacts. After that, I had to be very stern about not needing help to set up an app I was never going to use. I don't know if they are used to neophytes being unable to handle this and think they are doing a service or if it's a push to get people to connect/sync as much as possible.