07/06/2026
The Mazda RX-8 is powered by the 1.3L Renesis rotary engine, a lightweight, high-reving, and award-winning Wankel design.
The RX-8 uses the 13B-MSP Renesis rotary engine, produced from 2003 to 2011. Unlike conventional piston engines, the Renesis employs a rotary Wankel design with a triangular rotor spinning 😵💫 inside an oval housing, eliminating reciprocating pistons and allowing a compact, lightweight engine layout. The engine has a two-rotor layout with a total displacement of 1,308 cc (654 cc per chamber) and was designed to improve fuel efficiency and reduce emissions compared to its turbocharged predecessor, the 13B-REW.
The Renesis engine is naturally aspirated and comes in standard and high-output versions. Standard models feature two intake ports per chamber, while high-output versions have three intake ports (primary, secondary, and auxiliary), increasing airflow and power. Output ranges from 189 to 238 horsepower with a torque between 216-222 Nm, depending on the configuration. The engine is capable of revving up to 8,200 rpm, providing a responsive and exhilarating driving experience.
Mazda introduced several innovations in the Renesis engine.
The RX-8 rotary engine is generally reliable but requires careful maintenance.
The Renesis engine won 🏆 multiple awards, including International Engine of the Year and Ward’s 10 best engines in 2004 and 2005. Its compact size, high-revving nature, and unique rotary design make it a favorite ❤️ among enthusiasts and a defining feature of the RX-8.