Discounts are screwed up

I have several cars that are randomly getting discounts assigned to them. I have discounts for time on showroom floor and known defects and lacking features. These discounts are randomly being applied to completely new cars that just hit the showroom meeting none of the criteria. See this new sportscar that just rolled off the line getting discounts, others will not, I cannot figure out why this is happening.

I can only upload 1 image per post, so here is the followup.