A 2018 vehicle is 2 major version behind on the FSD it can use. Tesla is on v14 and 2018 vehicles are stuck on v12.

There's been rumors of a v14 lite coming out because tesla REALLY doesn't want to deal with the fact that they promised the 2018s could be fully autonomous.

Interesting, thanks. I haven't followed the hardware revisions on my car very closely; my father has a 2017 S, and I'm so used to thinking I have the "newer revision", since my MCU was newer than his, and he only recently upgraded it. I guess it should have been fairly obvious that a lot has changed in the past 7 years, but I've been hearing a nonstop trickle of autopilot/FSD news on these cars for so long that I guess I just assumed I had recent-enough support.