5. 1980-82 Ford Thunderbird
Back in the late ’70s and early ’80s, the American car industry faced downsizing and strict safety regulations. This meant that the car designers needed to make smaller, more fuel-efficient cars. However, this proved to be a problem because the designers were used to drawing 20-foot land yachts full of chrome. Unfortunately, they were going out of fashion. So, almost all of the U.S. cars from the period are visually-challenged, to say the least.
One of the worst examples is the 1980 to 1982 Ford Thunderbird. As you may know, Thunderbirds were always elegant personal luxury cars with distinctive styling, low silhouettes, good proportions, and nice details. But, not the 1980-1982 models, because they were boxy, ugly, small, and slow. Soon, Ford replaced it with the much more attractive 1983 Thunderbird model.