2007 XKR, 14K miles, second owner - decided to check the cabin pollen filter as it's the one items I haven't looked at since getting the the car last March, and much to my surprise I found fiberglass insulation in the well! First thought is rodents, as clearly the car has sat in someone's garage for a while before coming to us, but I'm curious as to where the fiberglass came from! Anyone know if this was used in the cars anywhere, or did my pesky little squatters bring it into the car?

No rodent poop anywhere obvious, car gets driven practically daily now and has zero issues other than the usual battery gremlins cured by a trickle charger.

 

Don't know, but it doesn't look like a mouse nest to me.

 

>> Anyone know if this was used in the cars anywhere,

The only place I can think of is in the under-hood insulation blanket ??

However, that stuff looks like 'Owens Corning' attic insulation - maybe from a garage roof ?? Either fell down and thru the vents, or brought by critters...