Tesla is uploading a lot of data?

Yes

Even in privacy settings I set not to share any data…

Certain data collected in shadow mode for FSD training is not an option to opt out of.

Heh.. I didn’t know that

Can you get it to upload those large amounts using its own cellular connection instead of your wifi?

Good question. I don’t know if Tesla uses cellular network for uploading such amount of data..

If I see that mine uses that much data on my wifi I might firewall it and see what it does. I have a soft data cap of 1TB and I already reach it. Add another few hundred GB from the Tesla and Ill end up getting my speed throttled.