A smart used car manager checks a car, racks it, then runs a Car Fax before he puts a number on a trade. I worked with some real gem used car managers, that ran a Car Fax when a customer asked for it, and then discovered the report was bad. To save face they'd doctor the report. Once in a while a smart customer who ran a Car Fax on their own called them out. The the excuses on how the papers were blown on the floor and the report must have gotten mixed up with another started flying. Pure total [censored]! But most people didn't want to pay for their own report so they thought they were saving money when they were handed a report. Then as I mentioned how accidents weren't reported or never made a report, I wouldn't trust them at all. When buying a used car do your homework!
I worked with a moron manager who knew nothing about engines, transmissions or how to check them. He knew how to check for body damage. He didn't send the cars to the shop because the shop charged the used car dept to check them. Many times I would drive a customers trade over to the shop to be prepped for the line. It was then that I discovered the car needed a transmission or engine work. It was policy that a salesman had this manager handle the numbers for the trade, and the salesmen were to shut up, and let this A-hole handle the trade. I would tell the manager who took the trade the car was a lemon, after I took it to the shop for prep. He'd get [censored] at me. So I kept my mouth shut, and laughed when I found a car with a problem.