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Why They Don’t Want You Driving a Chinese Car
(www.currentaffairs.org)
This is a most excellent place for technology news and articles.
Well back in 2016, when I was working for a European car manufacturer, all the data of cars in China went straight to a mirror server of the government. For all other countries the data was stored at the company servers.
Back then Chinese EV vehicles were no thing, so not sure how they handle it now.
But as you said, you can safely assume all the data goes to someone. Depends if they have something like GDPR in place or not, they can see most of your data and connect it to he user account.