I used to work for a car dealership; for a couple years.. as a detailer . I seen many, many shady deals.. but I'm going to share with you the worst one.
It was a newer Jeep liberty. We took in on trade. It had a water leak issue. Coming through a panel and a dome light. We were hit with a huge series of storms and long story short. The jeep had standing water in it. Instead of the owner getting it fixed, she decided she wanted something else..
I spent at least 4 hours vacuuming all the water out. wiped it down. Did the wheels etc. It was supposed be worked on in a few days and then put back on the lot. Well. In just 2 days, Someone came on the lot and fell in love with the car. The used car manager came to me and told me to prep it for delivery. I looked at him in disbelief "dude.. it's gonna be flooded as soon as it rains. " Me and the manager were cool. I had been to his house twice for some poker games. He looked at me and told me to go get some gas in it. Don't wash it (cuz he knew it would leak) , put the matts in it and bring it around front.. I did what I was asked to do. And looked at a family with a mother who clearly had joy in her eyes. I wanted to tell her so bad.. but I didn't (I regret it now) I screwed her temp tag on and she left. . This was my source of income . Lose my job .. or do what I was asked. I should have told her.
She was back a week later... with a flooded car.. and the used car manager told her not to worry, that her warranty would cover it... such a crook.
This was not a buy here, pay here lot . This was a licensed Chrysler company . It really blew my mind. Thankfully I don't work there anymore. And have never trusted a car dealership ever since.