1974 Ford Mustang II
The keyword (number) here is “II”. The Ford Mustang was vital in sparking the growth of muscle cars and many of the 1960s models are among the most sought after classics today. In 1974, Ford tried to follow up on the success with the Mustang II (which stood for second generation). The car immediately flopped. It offered decent enough styling but terribly poor performance. Ford would recover with later models, which were simple called “Mustangs”, no numeric needed. That’s likely because numerals would remind people of the Mustang II.