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The 1991 Mazda #55 Mazda 787B, also known as the 1991 Mazda #55 Team Mazdaspeed 787B, is a Group C sports prototype race car built by Mazda for use in the World Sportscar Championship, All Japan Sports Prototype Championship, and the 24 Hours of Le Mans from 1990 to 1991.

The Mazda 787B is very unique in that its victory at the 1991 24 Hours of Le Mans remains the only victory by a Japanese marque as of 2016 and the only victory by a car without a reciprocating engine design.


A "banshee rotary". The sound of "seven thousand cats being stung by seven thousand wasps." These are just two of the more colorful descriptions from journalists about the 1991 Mazda #55 Team Mazdaspeed 787B’s inimitable 690-horsepower Wankel-type rotary engine. That motor and it’s unmistakable, gloriously chaotic noise is coming to bring a full aural and automotive assault to every track in Forza Motorsport 6. Of course, if you’re a traditionalist, you’ll first want to hit Le Mans and, in particular, the Mulsanne Straight, where the 787B is most at home. The 787B and its Group C brethren regularly hit speeds north of 215 mph, which eventually caused the Le Mans organizers to add chicanes in 1990. And in 1991, the 787B won Le Mans itself, only for Mazda to find its star car banned after a rules change banned Wankel-type rotaries from competition. The 787B now sits in a place of honor at Mazda’s Hiroshima museum and for good reason: Since the team’s victory twenty years ago, no other Japanese manufacturer has managed to win Le Mans, a fitting legacy for a car that needs to be seen, driven, and heard to be believed.


The Mazda 787B uses Mazda's 2.6 L (2,616 cc) 4-rotor engine, codenamed R26B. It produces 690 HP (700 PS) and 448 lb-ft (607 Nm) of torque.


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Driving Characteristics

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  • The Mazda Furai concept car bears the #55 number of the winning Mazda #55 Mazda 787B.
  • The Mazda #55 Mazda 787B's 2.6 L 4 rotor engine can be swapped onto certain cars in the Forza series.



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