I personally don't have that issue, but if it is CPO I would have to say the dealer should help you out. I will defer to see if anyone chimes in concerning what/if they know what it might be.
Agreed^......I have seen those shields missing one of the securing bolts/screws, usually happens when the shop is doing an oil change or checking for something and the shield has to be dropped down......the wind as you drive will "flap" it around....happened to me in the Mustang last year!The shield that is under the engine for sound insulation can rattle a bit. Runs under the engine from side to side.
I am with your wife on this one, gives CPO a bad name.It appears it was the sway bar links. The dealer tightened them up but did order new ones.
Wife is more pissed at the selling dealer....Like how did this car pass a CPO inspection.
Once she gets it back with the new sway bar links...she's going to call them...