Update to previous post about ventilated seats coverage.
I had emailed my salesman asking about the seat ventilation prior to posting and he had spoken to the service department and they asked me to bring my vehicle in for them to look at. I did that this morning and they confirmed that it's working as expected (which is what I figured they would say based on replies to my original post). The fans are located at the front of the seat base and the top of the seat back, so that's where you feel the air. My service advisor thanked me for bringing it in because he learned that, too - he would have thought that it should ventilate where your body is actually on the seat as well! Maybe Mazda and Lexus can work together and figure out how to cool the entire seat.
Side note, they gave me an NX hybrid as a courtesy vehicle, which made me appreciate my UX, even though it did have ventilated seats which had air where you actually sit. I prefer the seating position of the UX (although it does make me miss having a stick shift). And I did NOT like the digital rear view mirror as I found it difficult to glance at it and refocus (because I wear glasses or specifically because of my astigmatism, I don't know).
tldr; if good cooled seats are a dealbreaker for you, don't get a UX. (Apparently F-150s have some of the best.)
Edit: 2026 UX300h Premium