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Mazda's New Rotary Patent Tackles The Problem That Killed The Old One

Summary by Carscoops
A fresh US patent filing takes on the exact emissions weakness that has kept Mazda's rotary revival stuck on concept-car stages
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4 Articles

At Mazda, the Wankel rotary engine has long been a technical signature. It left the catalogues in 2012 with the RX-8. From the 1967 Cosmo Sport to the MX-30 e-Skyactiv R‐EV, Mazda produced more than 2 million vehicles. All of them were equipped with a rotary engine. In 2023, the rotary engine returned discreetly under the hood of the MX-30 e-Skyactiv R‐EV, used as an electric generator. Since then, Mazda has also unveiled the Iconic SP and Visio…

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Few manufacturers have as strong a connection with engine technology as Mazda with the rotary engine. From the legendary 787B winner in Le Mans to the RX-7 and RX-8, the manufacturer of Hiroshima has made it a real specialty. But the constraints related to emissions, fuel consumption and oil consumption have largely contributed to its disappearance under the hood of sports cars. A new patent today suggests that Mazda is still seeking to correct …

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Carscoops broke the news on Thursday, August 20, 2026.
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