Generally, it depends on the level of the issue and how long you've owned the car. The car comes with warranties that last between 4 and 10 years, depending on the part. They should cover this sort of thing. Issues that can compromise passenger safety are subject to recalls, and do not have a time limit.

Tesla runs service centers and dealerships across their sales area.

In my experience there were two manufacturing issues with my car and they came to my location and fixed them for free. Obviously, it would better to not have them in the first place and I can't speak to the full set of issues people have had.

That's comforting to hear that they do address the issues.

All of the flaws Munro talks about in his videos and with Musk here are visible really from moment you pickup the car at mile zero. I believe Tesla do have some kind of no questions asked return of the car at pickup time (my Model 3 did in CA anyway).

More shocking to me is that some people will accept (new!!) from Tesla cars with paint and panel fit this bad. Some of the Model Y examples in my neighborhood are truly shocking - several of them the rear hatch door just does not sit flush at all when closed, yet the buyer still drove it home?

If a dealer sells you a brand new car with paint and panel fit issues, it's probably a good idea to refuse and request one free of defects. Sadly there are now some online checklists for buying Teslas that walk you through the most common cosmetic defects so you can spot them at pickup time (sad because this should not be necessary).

I wonder how many people even realize that’s an option. After all, there is no other major car company where you would have these kind of issues. It’s not normal to have to give back your car at mile zero because of massive quality issues.

Yes, though the service experience varies about as much as if you were dealing with car dealers.