Ford's ( F) Edsel brand became a symbol of a manufacturer's failure to judge the market. Not to say the every Edsel was bad, but the styling wasn't what people wanted -- the marketing of a brand that allegedly competed with Buick and Oldsmobile was way off and the production was often flawed. Edsel was "the legendary flop of all automotive flops," Edmunds.com says. The 1958 Edsel Corsair "was rejected by the marketplace," Oldham says. "It was reviled for being unattractive, starting with an unusual vertical grill" and horizontal tail lights, opposites of what car buyers wanted. You simply cannot make a list of the top 10 bad cars and not include an Edsel.