
Mazda models that utilize rotary engines include: COSMO-SPORT-110s, Savanna, Luxury Edition COSMO-SPORT-CosmoAP, MAZDA-RX-7-FD3s, and Mazda-787B. Below is relevant information about rotary engines: 1. Mechanical Differences: Rotary engines, like traditional reciprocating engines, rely on the expansion pressure generated by the combustion of air-fuel mixture to produce rotational force. The difference lies in how they utilize this expansion pressure. 2. Advantages: Rotary engines eliminate useless linear motion, resulting in smaller size, lighter weight, lower center of gravity, greater power output, and reduced vibration and noise compared to reciprocating engines of the same power.

In my youth, I chased after Mazda's classic models, and their rotary engine series truly evokes nostalgia. It all started with the 1967 Cosmo Sport, which paved the way, followed by the RX family. Models like the RX-2 and RX-3 gained popularity in the 70s, while the RX-4 and RX-5 each had their unique characteristics. However, the real household name was the RX-7, especially the FB and FC models in the 80s and the FD in the 90s, which won fans over with their lightweight design and superb handling. The RX-8 then took over in 2003 and remained in production until its discontinuation in 2012. The rotary engine was smooth and powerful, but its high fuel consumption and expensive maintenance were significant drawbacks, leading Mazda to shift toward conventional engines. Today, if you're looking for a used model, these cars can still be found at auctions, holding considerable historical value. The rotary engine was once the soul of Mazda, but times have changed, leaving it only in our memories.

As an automotive technology enthusiast, I have a deep understanding of Mazda's rotary engine models. The core lies in the various generations of their RX series, starting from the RX-2 and RX-3, to the multiple variants of the classic RX-7, and finally the last generation RX-8. The rotary engine features a unique design that utilizes rotating triangular components to achieve high-revving output, making it suitable for sports car performance. However, its poor sealing and susceptibility to wear result in a shorter lifespan. In recent years, Mazda has incorporated small rotary engines as range extenders to charge batteries in concept cars like the MX-30 e-Skyactiv R-EV, which technically counts as usage. However, in mainstream models, it has been absent since 2012 due to stringent emission regulations and efficiency pressures. This type of engine is compact, lightweight, and delivers excellent power, but it has only succeeded in niche markets. In the future, it may be integrated into hybrid systems to maintain its innovative spirit.

I was deeply impressed by the old RX-8 I drove, with its super-fast rotary engine startup and uniquely cool sound. Mazda mainly used rotary engines in the RX series, such as the classic RX-7 in earlier years and the later RX-8. Before the RX-8 was discontinued, it was quite popular among young people, but its high fuel consumption and expensive repairs made it rare in the market now. Besides these, the Cosmo Sport was the pioneering model. In modern new cars, rotary engines are basically gone, but the 2023 MX-30 range-extender version uses one for power generation assistance. As an average car owner, it's important to check for engine wear when buying used. While rotary engines are unique, their durability is a challenge, and Mazda now focuses on more practical traditional engines. If you're interested in history, searching for catalogs of old models can show the evolution of their designs.


