10. Mazda RX-7 (First Generation)
The Mazda RX-7, introduced in 1978, was powered by a unique rotary engine, setting it apart from traditional piston engines. (motortrend.com) Enthusiasts cherished its exceptional handling and engineering, with over 470,000 units produced by 1985. (sportscarmarket.com) Despite its acclaim, the RX-7’s sales were modest compared to mainstream sports cars, as it appealed to a niche market seeking innovative performance. (goodcarbadcar.net)