21: Chevrolet Monza
The need for compact cars was ever-growing in the 1970s and 1980s and this was a brand new segment for GM. This is why it seemed like they were throwing everything at the wall back then. The Monza is another example of that in a car with no purpose, and the design fell short. The reliability was questionable at best, with these cars having overheating problems and transmission problems right out of the gate and the small fixes from GM didn’t help (via EP Auto).
The design of the Monza had a lot of potential but paled compared to the problems the car had. Consumers wanted something reliable, especially when they were purchasing it brand new. The Monza would tarnish GM’s reputation even more during this period when it came to compact cars. Although this car stayed on the market for a short period, few remember it today.