Mazda 787B Le Mans Winner
The Mazda 787B holds a unique and eternal place in motorsport history: it is the only car powered by a rotary engine to win the 24 Hours of Le Mans, achieving the feat on June 22-23, 1991, in a victory so improbable and so emotionally charged that it transcends mere racing statistics to become one of the greatest underdog stories in all of sport.
Mazda's quest to win Le Mans with a rotary engine began in 1970, and for two decades the company returned year after year, enduring failures, retirements, and heartbreak. The rotary engine — Felix Wankel's brilliant but troubled invention — was Mazda's passion and its curse. While the spinning-triangle design offered exceptional power-to-weight ratio and silky smooth operation at high RPM, it suffered from chronic reliability problems, poor fuel efficiency, and seal wear that made 24-hour endurance racing an almost impossible challenge. Yet Mazda persevered, driven by an institutional stubbornness that bordered on obsession.
The R26B engine that powered the 787B was the culmination of those two decades of development. A 2.6-liter four-rotor unit (equivalent to approximately 5.2 liters in piston-engine displacement for regulatory purposes), it produced approximately 700 horsepower at 9,000 RPM in race trim. The engine used peripheral port induction, a three-piece eccentric shaft, and ceramic apex seals that had been developed through literally thousands of hours of testing. The sound it produced — a banshee wail that rose from a deep warble to an otherworldly scream as the tachometer climbed toward 10,000 RPM — is universally regarded as one of the most spine-tingling sounds ever heard at a racetrack.
The 787B chassis was a carbon fiber and aluminum honeycomb monocoque designed to Group C regulations. At just 830 kilograms, it was significantly lighter than the turbocharged opposition from Mercedes-Benz, Jaguar, and Peugeot. The aerodynamics were developed in Mazda's wind tunnel and produced massive downforce while maintaining low drag — critical for the 6-kilometer Mulsanne Straight where top speed determined lap times.
The 1991 race itself was a masterpiece of strategy and endurance. The car, wearing the now-iconic number 55 with its distinctive Renown green-and-orange livery, was driven by Volker Weidler, Johnny Herbert, and Bertrand Gachot. The crew chief was the legendary Takashi Yorino, who orchestrated a race strategy that prioritized reliability over outright pace. While the faster Sauber-Mercedes C11 and Jaguar XJR-14 were expected to dominate, mechanical failures struck the favorites one by one through the grueling night hours. The Mazda, running like clockwork, inherited the lead and held it through the final hours.
When Johnny Herbert — barely able to walk due to injuries sustained in a prior F3000 accident — took the 787B across the finish line after 362 laps and 4,923.2 kilometers, the emotions were overwhelming. Herbert wept in the cockpit. The Mazda team, many of whom had devoted their entire careers to this single goal, was in tears. The Japanese motorsport press declared it the greatest moment in Japanese racing history. Even rival teams applauded, recognizing the poetic justice of Mazda's persistence finally being rewarded.
The victory was also a farewell. The FIA had already announced that rotary engines would be banned from Group C racing for 1992, making the 787B's triumph literally the last chance for a rotary-powered car to win at Le Mans. This bittersweet timing gives the victory an added dimension of significance — it was not just a win, but the final statement of a technology that the sporting authorities had decided to exclude.
Today, the winning 787B (chassis number 002) resides in Mazda's museum in Hiroshima, though it is occasionally brought out for demonstration runs at events like the Goodwood Festival of Speed, where the sound of its R26B engine never fails to stop spectators in their tracks. The car is considered priceless — it is not for sale and never will be. It represents not just a racing victory, but the embodiment of Mazda's entire engineering philosophy: the relentless, obsessive pursuit of an unconventional idea against all odds.
No rotary engine has won Le Mans since, and none ever will again. The 787B's victory stands alone, unrepeatable and eternal.
The three 787B chassis are museum pieces and not available for purchase at any price. The winning car (#55, chassis 002) is owned by Mazda and resides in their Hiroshima museum. Occasionally, related Mazda racing prototypes from earlier Le Mans campaigns (767, 757) have appeared at auction at prices exceeding $1 million. Scale models, team memorabilia, and original photographs are collectible.
Three 787B chassis were built (001, 002, 003). Chassis 002 (car #55) won the 1991 24 Hours of Le Mans. Chassis 003 (car #18) finished 8th. Chassis 001 (car #56) retired with gearbox failure. The R26B four-rotor engine was developed specifically for Le Mans competition. Rotary engines were subsequently banned from Group C for 1992. The winning car resides in Mazda's museum in Hiroshima.