8. Pontiac Fiero GT
The Pontiac Fiero GT’s innovative mid-engine layout and sleek, wedge-shaped design promised a breakthrough American sports car—one with the potential for true muscle car status. However, GM’s emphasis on fuel efficiency and affordability, along with internal politics that discouraged encroaching on Corvette territory, meant a V8 engine was never officially offered. Enthusiasts dreamed of a powerful Fiero, but the factory versions topped out with V6 power, leaving its full performance potential unrealized. Explore the Fiero GT’s story further at Hagerty.