19: SN-95 Ford Mustang
Known as the black sheep of the Mustang lineage, the SN-95 was a stopgap for Ford designers. They didn’t know how to replace the ever-popular Foxbody Mustang, and GM introduced a new Corvette-powered competition. Performance on the SN-95 was underwhelming, and this generation of the Mustang was loathed. There was a Cobra version later down the road, but the performance still couldn’t match the Camaro (via LMR).
Mustang enthusiasts swear by the SN-95, but in reality, it was one of the worst Mustang models. Ford would keep it going in one form or another until the 2005 model year. There have been many failures when it came to the Mustang, but the SN-95 takes the cake. The unimaginative design and lack of true performance left this Mustang behind.