When Galen decoded my car years back he said that the Y93 meant that they took extra time with the details like the seam sealer application. Well there was a lot of room for improvement there as some cars had open seams between the panels. I've seen where others have thought that the paint was buffed out and special attention was made in the paint quality like elimination of sags. And Y93 also does have some sort of designated fuel level from the factory. I've been in the car business my entire working life and did export cars at one point. The cargo shipping companies required a low amount of fuel, but not empty so they could move the car around while loading.
But, the Y23 is more interesting to me because it might identify some type of purpose for the car. It came from Arizona and think that was the original delivery state. It's probably no big deal what the code is, but since it doesn't seem to show up anywhere on a search it was worth a post to this site.
