Build date: 3/2018. Hopefully this puts me out of the range of the very bad paint, but as you mentioned, people had issues with paint well after the 2017 build dates.
I was realizing now that nearly all of the Stingers that I was looking at had the paint protection package on the bumpers, provided by the dealers. I thought this was a nice touch at the time, but dealers don't usually do things for free, I'm sure they're doing this based on known paint issues in Stingers.
On my car, yes, the issues are in odd places, on the upper rear quarter panel and other places where you wouldn't expect road debris issues. Further, the surface is smooth in those spots, so there's no obvious damage or way that road debris could have caused it. Throw in that I'm only at 190 miles and have had the car for just a few days, I'd think I have a good case to present to Kia to have a body shop fix this however they can.
This does seem to be a potentially different issue than the paint chip issue that others are seeing, at least so far, but seeing the pain everyone has been through with it, I'd like to do what I can to keep the paint looking good.
My car came with the paint protection package, with Hood Film, Door Pocket Film, Bumper Applique. Where else would you recommend PPF?