7. Pontiac Aztek
Introduced in 2000, Pontiac Aztek was a good idea, on paper at least. The mid-size crossover model with sharp new styling, decent engine lineup and plenty of interior space was a pretty modern concept at the time. Pontiac was eager to present it to the public since the overall sales of the brand were not so good and they thought that the new model will boost the popularity of the brand and bring new customers to the dealerships.
The plan was sound, except for one thing, and that was the design. Somehow, Pontiac designers managed to draw and push to production one of the ugliest cars ever made. Just look at it. Even from this distance and 17 years after the first Aztek saw the light of day, it is still a car with the design that makes no sense whatsoever.