The 1991 Mazda 787B is a landmark in motorsport history, celebrated as the first—and only—rotary-engine car to win the 24 Hours of Le Mans. Competing in the Group C class, the 787B was powered by the R26B, a four-rotor rotary engine producing approximately 700 horsepower. Weighing just 830 kg, it featured advanced technologies for its time, including carbon brakes and telemetry systems. At the 1991 Le Mans, the No. 55 car, driven by Johnny Herbert, Volker Weidler, and Bertrand Gachot, completed 362 laps (4,932.2 km) at an average speed of 127.62 mph, securing Mazda's historic victory .