Possibly? There's conflicting info, it seems some model do, some don't and even models that are supposed to have it might not 🤔
edit: Forgot to mention, Tesla constantly updating hardware like it was software will end up biting owners in the ass as things break and there's no easy way to know what their car needs compared to what looks like the same car built 6 months later. There's a reason why legacy manufacturers work in generations.
OBDII hasn't been used for emission equipment exclusively from the beginning, it's the USB of the car world, so it's used for pulling info from all sensors and from the different computers and can be used to reprogram the car, so legacy manufacturers for sure use it in their EVs...
I've been seeing legacy appended to a lot of things and it always annoys me. The one that annoys me the most is "Legacy News/Media"; as if the future of news is random blog or twitter posts.
Considering how many of those orgs have chosen to stop doing journalism and how random blog posts seem to be picking up that slack, it seems more accurate than any of us might care to admit.
Not Tesla specifically, but anytime I look at the included navigation of a “legacy” manufacturer I am immediately reminded of the difference. Thank god my Chevy has CarPlay (that I didn’t have to pay extra for).