The paint is sprayed on not dipped, and I have several parts cars with the interior removed and you can see primer in lots of places, where paint was not sprayed. Let me know if you need pics. I also know a guy who worked for ford, until 97' as a painter , who did touch-ups and minor repairs, for when the robot sprayers messed up or there were flaws.Mine does not. I am pretty sure the cars are dipped so I don't see how primer could be seen. If that was the case, you would be able to see the primer inside the cabin when the interior is removed which you cannot.