I rented a car at the Denver airport. Right after I left the rental lot the muffler tailpipe dropped off whatever it was bolted to on the undercarriage. It wasn't dragging on the pavement but it was bouncing around when I went over bumps in the road. I thought it was the luggage bouncing around in the back. I noticed what the problem was when I got to the hotel, but it was late. I took it back the next day and exchanged it for another vehicle. But they submitted a damage report and since I was the last to drive it, I ended up having to pay for the repairs. It cost $311. And to add insult to injury $120 of that was a $50 bookkeeping fee and a $70 diagnostic fee. I guess the diagnostic fee was for putting the car up on a hoist. It wasn't like I was in an accident or anything like that. This was just a defective car. And having a picture of the back end of the car before I rented it doesn't prove anything. The bracket under the car could have been damaged and waiting to break as soon as the next poor soul drove it off the lot. I explained all of this to them but to no avail. I guess the lesson to be learned from all of this is you need to thoroughly inspect the car yourself before you drive it off the lot. Including getting on the ground and checking out the undercarriage.