12: 1996 Ford Taurus
By the ’90s, the Taurus had gone from being the best-selling car in the country to being a shadow of its former self. Toyota and Honda were both dominating the family car market by this point in time. The Taurus had to be redesigned, and the folks at Ford figured it was time to do drastic measures. The Taurus redesign was catastrophic for the company and the car was mocked for its overt oval appearance from the inside out (via The Motor Digest).
The Taurus was universally panned for the awful exterior styling. The overtly oval appearance made the car a target for negative press. We’re not sure what Ford was thinking, but this was one of the most costly blunders in the automotive industry. Ford undoubtedly lost millions of dollars on this redesign of the Taurus and the brand never made a full recovery.