I'd say the worst American auto maker now is Ford. Although each one is losing money I'd prefer GM because not as many people complain about them. Chrysler in the past had a poor reputation, but since the new 300 and 300C people liked Chrysler a but more. Here's a site someone made that hates his Chrysler 300M so much he made a website about it. http://mychryslersucks.com/