33. Pontiac Aztek
Introduced in 2000, the Pontiac Aztek was a good idea, on paper at least. The mid-size crossover model with sharp new styling, a decent engine lineup, and plenty of interior space was a modern concept at the time. The plan was sound, except for one thing, and that was the design.

Somehow, the Pontiac designers managed to draw and push to production one of the ugliest cars ever made. Just look at it. Even from a distance and 17 years after the first Aztek saw the light of day, it is still a car with a design that makes no sense whatsoever. The pure ugliness of the car and poor fit and finish quality sealed the fate of the Aztek.