A good F&I manager will make a lot more profit than the sale of the car, even used cars which make a hell of a lot more money than a new car does. They often pack a deal, especially when the customer has poor credit, they did it to some customers with good credit too. They'd size them up the day the deal was written. Not to list all of their tricks, but one of the more profitable tricks was to ask the bank for several thousand more than the customer actually needed. At the time I was selling cars that was usually in the neighborhood of $3,000-$4,000 more, or higher. Then they'd tell the customer that the only way the bank would approve the loan was if they took an extended warranty. The pitch was "the bank feels if you have a major repair you might not be able to pay the car loan," that usually set the hook!! I would say nine out of ten used car buyers fell for that trick, they nailed several new car buyers with it too. I could easily write a book about all the tricks used.