19: Chevrolet Camaro Iron Duke
Dubbed the worst Camaro model of all-time, this 1980s monstrosity was designed to appeal to fuel-conscious consumers. Nowadays, people don’t even bat an eye when you say that a car is powered by a four-cylinder, but back then, putting one in a Camaro was a travesty. The “Iron Duke” was so lethargic that the automotive press made it the laughing stock of their coverage. In addition to the complete lack of performance, the engine was also unreliable.
While the four-cylinder Camaro was a decent attempt at fuel economy, the rest of the car faltered for a lot of reasons. Technology just wasn’t there at the time to be able to pull Camaro-level performance out of a four-cylinder. It was a valiant attempt, but GM regrets it.