If u trade a car in at a new car department at the dealer, good chance is they won't look at it or know what their looking at, send the car to the service department for the guys there to check it over, 100 point safety, oil change and it goes straight to used car department for resale If its a bad car they will wholesale it I work in the service department Let me tell you before it goes to used car department, if it has an aftermarket sub, or cai, or anything like that good chance it won't leave the service department with those parts but stock parts, and those extra parts go straight into my toolbox.. What guy would buy a used car with a cai? For his family car ?