Not all muscle cars are created equal—some are just plain letdowns. From the underpowered 1974 Pontiac GTO to the awkward Pontiac Aztek, this list calls out 8 models that look cool but often leave owners frustrated with weak engines, high repair bills, or just bad vibes. If you’re dreaming of a classic ride, check this list before you buy—save yourself the disappointment and cash! #Cars #MuscleCarFails #CarShopping