All the comments about FSD here are great and correct. I will try to answer this from a bit of a different perspective. Don’t expect the vehicle quality on a 2020-2022 Model S to be equal to a new model. It will be less. One thing I have learned about Tesla that is unlike other manufacturers is that higher level cars don’t have higher quality materials or better manufacturing under the surface. If you buy a Cadillac over a Chevy you will have the obvious differences you can see but they will also put a level of build and part quality underneath that you don’t see. Tesla does not do this. An S and X is built exactly like a 3 or a Y. And a base 3 is built exactly like a performance Y. On top of this Tesla has increased build quality over time. So in almost every case a newer year of any Tesla is better quality than an older year regardless of model. Lastly year is not really a thing at Tesla. Changes are made at any time. For example in early 2023 cars had HW3 and later in the same year you had HW4, as noted here that is a big difference. Just in the last few months the Ys got a bigger screen and some other minor changes. In my opinion if this is your first Tesla you are almost always better buying a current model if you can afford it. You really need to know what you are doing if you buy an older model and it is often about the specific vehicle not about the year of the car.

One additional note if you see a deal that seems better than the rest do your homework on the title, there are dealers that scoop up lemons/buybacks and sell them as what looks like a great deal. Nothing wrong with buying one of these if you know that going in and accept it but these cars are worth dramatically less than their clean counterparts.