Not really, so many variables.
Things happen in an assembly plants paint kitchen that it's hard to pin-point unless you are there, and can take a hard look at some data from that day's production.
Have seen a similar condition on some Ford products in the late 90's.
Was due to the floor supervisor getting ready to retire and for that last week the bake oven for the clear was operating about 20F less than required, he didn't care, was drunk every afternoon after "lunch".
If he was to have made the correction, he would have had to shut down the line, which is a real bear, and do a lot of paperwork, so just let it go.
Result, about 1,400 vehicles went out to dealers and the resulting warranty costs were huge.
Was called in on another issue at another manufactuer's paint kitchen, seems the that sort of the same thing happened, but this time was due to the vehicles getting only one pass of the clear, rather than the two required.
That went on for two weeks, the guy had done his 30 years, sat in front of the control panel for the atomizing bells that applied the clear, didn't care, was drunk, came back from lunch, put his feet up and took a nap, for two weeks.
Tim caught what was going on one day, and when I looked at the clear consumption usage, the numbers told the tale.
People are the weakess link in any modern production plant these days, just like a 100 years ago.
Grumpy