39: AMC Pacer (1978)
There was a time when the American Motor Company (AMC) was one of the most dominant forces in the automotive industry. However, by the time the Pacer came around, this was far from the truth and consumers were wary. The Pacer is often credited with having one of the worst designs in automotive history.
In addition to its questionable design, the Pacer also lacked in the performance department, being painfully slow for the time. A common upgrade nowadays is to swap out the original AMC engine with a GM LS powerplant, although you’ll spend far more than the car is worth. The Pacer is iconic for being a flop more than anything else, and that’s not very flattering.