13: 1965 Buick GS 400
Buick is another iconic carmaker that’s still around to this day. But during the muscle car era, they were rocking and rolling. The GS 400 however was a paltry attempt to build on the success of other GM muscle cars. Although all of these cars were carbon clones of each other, the GS 400 had some drawbacks to it. For starters, all of the nice luxury features in the interior would go bad and were expensive to replace.
The performance was not a vast improvement over other models, and the GS 400 commanded a premium price tag. Then you had the fact that Buick didn’t have the same kind of brand recognition as other GM makes and models, so this added to things as well. Nevertheless, the Buick GS 400 is a notable addition to an otherwise questionable product line.