A Tesla is a poorly built expensive semi-luxury car.

The first Teslas were poorly built expensive semi-luxury cars.

The current Model 3 and Model Y are properly built competitively priced cars with many luxury features (such as huge trunks, rear climate control, all wheel drive, etc) and gadgets (Netflix on huge touchscreen, self-driving, etc).

They are still out of reach as new to a lot of people. Let's call that premium market instead of luxury.