15: Chevy Vega
The Vega was another attempt by GM to try and sell something that could compete with other gas-efficient cars on the market. Likewise, the design was simply not enough to persuade any number of consumers to go into a Chevy showroom. The powerplant was downright lethargic and the interior was routinely mocked for its cheap design. There were some interesting design cues on the exterior of the car, but it wasn’t enough to change the course.

The Vega went on sale at a time when GM was transitioning, and it didn’t fare very well. Few cars managed to be as much of a failure for the brand as the Vega. Car shoppers just weren’t interested in the cheap design and the lack of features. For that price, there were other well-equipped cars on the market.