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Mazda Has Filed Patents for New Rotary Engines

The automaker plans to return rotary engines to showroom floors using new exhaust gas recirculation technology.

Updated on Sept. 28, 2026 in Performance Vehicles

A close-up view of a metallic rotary engine housing with its distinctive triangular combustion chamber, highlighting advanced automotive engineering.
Mazda has filed new patent applications for exhaust gas recirculation technology, aiming to integrate high-efficiency rotary engines into future performance hybrid vehicles. AI Illustration. Upload story photo >

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Mazda has filed a new patent for a rotary-specific exhaust gas recirculation system, signaling plans to reintroduce the engines for performance vehicles. The company intends to integrate this technology into a hybrid powertrain.

Why it matters

Engineers are working to restore the unique revving, sound, and vibration characteristics of rotary engines while meeting modern standards. This move aims to bring the classic rotary experience back to performance car enthusiasts.

Mazda previously manufactured rotary engines from 1965 until the RX-8 production ended in 2012. The new patented exhaust system utilizes two side ports and a cooler to manage combustion temperatures.

The players

Mazda

Mazda is a Japanese multinational automaker known for its focus on driver-centric performance vehicles and unique engineering solutions like the rotary engine.

Mazda Motor Europe

Mazda Motor Europe serves as a primary hub for the company's product development and engineering initiatives within the European market.

The details

The new exhaust design directs gases through a cooling system to allow for a leaner fuel-air mixture, moving away from older methods that used excess fuel to cool the engine. Mazda successfully tested rotary engines as a range extender in the MX-30 R-EV before pursuing this dedicated performance application.

Timeline

  1. 1965: Mazda launched the Cosmo as its first rotary-powered vehicle.

  2. 2012: The company concluded production of the rotary-powered RX-8.

  3. 2026: Mazda filed the patent for a new exhaust gas recirculation system.

Roadmap

This development marks a significant pivot for Mazda as it attempts to modernize its legacy rotary technology for a new era of hybrid performance. The company is positioning itself to maintain its engineering identity while navigating the broader industry-wide transition to cleaner emissions.

Drivers looking for the classic rotary engine sound and feel can expect future performance models to feature these characteristics within a hybrid powertrain. Potential buyers should monitor showrooms for upcoming announcements regarding which vehicle platforms will adopt the new rotary technology.

The takeaway

Mazda is successfully leveraging its long history with rotary engines to bridge the gap between traditional high-revving performance and modern efficiency requirements. Enthusiasts should anticipate a new generation of hybrid vehicles that retain the brand's signature driving characteristics.

Further reading

For more information on the latest developments in automotive engineering, see the Performance Vehicles section.

Live Poll

Do you prioritize engine sound and driving feel over maximum fuel efficiency in a new vehicle?