## All Rotary Engine Cars
### Introduction
The rotary engine is a type of internal combustion engine that uses a triangular rotor that spins within a figure-8 shaped chamber to create power. Rotary engines are known for their smooth operation, high power output, and compact size. However, they also have some disadvantages, such as poor fuel economy and high emissions.
### History of Rotary Engine Cars
The first rotary engine car was the NSU Ro 80, which was introduced in 1967. The Ro 80 was a success, but it was plagued by reliability problems. In 1973, Mazda introduced the RX-3, which was the first Mazda car to use a rotary engine. The RX-3 was a more reliable car than the Ro 80, and it helped to popularize rotary engines.
Mazda continued to produce rotary engine cars throughout the 1970s and 1980s. The most popular rotary engine car was the RX-7, which was produced from 1978 to 2002. The RX-7 was a sports car that was known for its performance and handling.
In the 1990s, Mazda began to phase out rotary engines in favor of more fuel-efficient piston engines. The last Mazda car to use a rotary engine was the RX-8, which was produced from 2003 to 2012.
### Advantages of Rotary Engine Cars
* **Smooth operation:** Rotary engines operate very smoothly because they do not have any reciprocating parts. This makes them ideal for use in sports cars and other high-performance vehicles.
* **High power output:** Rotary engines can produce a lot of power for their size. This makes them ideal for use in lightweight vehicles.
* **Compact size:** Rotary engines are very compact, which makes them ideal for use in small vehicles.
### Disadvantages of Rotary Engine Cars
* **Poor fuel economy:** Rotary engines are not as fuel-efficient as piston engines. This is because they have a higher surface area-to-volume ratio, which means that they lose more heat to the environment.
* **High emissions:** Rotary engines produce more emissions than piston engines. This is because they do not have as good of a seal between the rotor and the chamber.
* **Reliability problems:** Rotary engines have a reputation for being unreliable. This is because they have a lot of moving parts that can wear out over time.
### Conclusion
Rotary engine cars are a unique type of vehicle that offer a number of advantages over piston engine cars. However, they also have some disadvantages, such as poor fuel economy and high emissions. If you are considering buying a rotary engine car, it is important to weigh the pros and cons carefully to make sure that it is the right car for you.
### List of All Rotary Engine Cars
Here is a list of all rotary engine cars that have been produced:
* **NSU Ro 80 (1967-1977)**
* **Mazda RX-2 (1970-1975)**
* **Mazda RX-3 (1971-1978)**
* **Mazda RX-4 (1972-1978)**
* **Mazda RX-5 (1975-1981)**
* **Mazda RX-7 (1978-2002)**
* **Mazda RX-8 (2003-2012)**
* **Eunos Cosmo (1990-1996)**
