In 1978, Mazda introduced the RX-7, a two-door coupe with a rotary engine. At the heart of the RX-7 was Mazda’s unique 12A rotary engine, a lightweight, high-revving engine that offered excellent performance and durability. The engine remained in production until 1985, and during that time, it powered some of the most successful sports cars of the era, including the RX-7, the Cosmo, and the Familia. This article aims to provide an in-depth look at My 1985 Mazda RX7 12a 1.1, highlighting its unique features, performance, and history.


The 1985 Mazda RX7 12a 1.1 was a unique car, with a range of features that set it apart from other sports cars of the era. Some of the key features of the 1985 RX7 include:

– 12A Rotary Engine: The 12A rotary engine was the centerpiece of the RX7’s performance. The rotary engine is unique in that it uses a spinning rotor instead of the traditional piston engine design, which provides a smoother operation, a higher RPM (revolutions per minute), and a lighter weight.
– Lightweight Design: The RX7 was built with a lightweight frame, which helped to improve its handling and acceleration. The car weighed in at just over 2,500 pounds, making it one of the lightest sports cars of its era.
– Rear-Wheel Drive: The RX7 had a rear-wheel-drive system, which is preferred by many sports car enthusiasts due to its improved handling and maneuverability.
– Five-Speed Manual Transmission: The RX7 was equipped with a five-speed manual transmission, which provided the driver with precise and quick shifts.
– Limited Slip Differential: The car also had a limited-slip differential, which helps to distribute power evenly between the drive wheels, improving traction and handling.


The 1985 Mazda RX7 12a 1.1 was a car built for performance. The lightweight design, coupled with the powerful rotary engine, provided the car with excellent acceleration and handling capabilities. The car could go from zero to 60 miles per hour in just 7.1 seconds, and it had a top speed of 123 miles per hour. Some of the other key performance features of the RX7 include:

– Horsepower: The 12A rotary engine in the 1985 RX7 produced 100 horsepower.
– Torque: The car had a torque rating of 105 lb-ft, which provided excellent acceleration and handling.
– Suspension: The RX7 was equipped with a four-wheel independent suspension system, which helped to improve its handling and ride comfort.
– Brakes: The car was equipped with four-wheel disc brakes, which provided excellent stopping power and braking performance.


The Mazda RX7 was first introduced in 1978 as a two-door coupe. The car was built with a lightweight design and a rotary engine, which provided excellent performance and handling capabilities. Over the years, the RX7 went through a series of updates and changes, with the 12A rotary engine remaining a constant feature throughout its history. The 1985 Mazda RX7 12a 1.1 was one of the last models to feature the 12A rotary engine, as Mazda replaced it with a new 13B engine in 1986.

The RX7 was a popular car during the 1980s, with many car enthusiasts valuing its performance and unique design. The car also had a successful racing career, with numerous victories and championship titles in various racing series. The RX7 helped to solidify Mazda’s reputation as a builder of high-performance sports cars and played a significant role in the company’s success.


Maintaining a vintage car like the 1985 Mazda RX7 12a 1.1 requires proper care and attention. Here are some of the key maintenance tasks that RX7 owners should perform:

– Oil Changes: The rotary engine in the RX7 requires more frequent oil changes than a traditional piston engine. It is recommended to change the oil every 3,000 miles or so.
– Timing Belt: The timing belt in the RX7 should be changed every 60,000 miles or so. Failing to change the timing belt can lead to engine damage.
– Spark Plugs: The 12A rotary engine requires specialized spark plugs, which should be changed every 30,000 miles or so.
– Fuel Filter: The fuel filter should be changed every 20,000 miles or so to keep the fuel system clean and running smoothly.
– Brakes: The brakes should be inspected regularly and replaced as needed to ensure proper stopping power and braking performance.


The 1985 Mazda RX7 12a 1.1 was an outstanding sports car that showcased Mazda’s commitment to performance and design. The car’s unique rotary engine, lightweight design, and rear-wheel drive made it a favorite of car enthusiasts everywhere. While the car may be several decades old, with proper care and maintenance, it can still provide an excellent driving experience today. Whether you’re a vintage car collector or just a fan of sports cars, the 1985 Mazda RX7 12a 1.1 is a car worth experiencing.


– https://www.caranddriver.com/reviews/a15135154/1985-mazda-rx-7-archived-test-review/
– https://www.hemmings.com/stories/article/1985-87-mazda-rx-7
– https://www.rx7club.com/3rd-gen-historical-archives-387/1985-rx-7-specs-57394/
– https://www.mazdapartsprime.com/blog/1985-mazda-rx7-maintenance-tips/
– https://www.roadandtrack.com/car-culture/classic-cars/a28304249/mazda-rx-7-fd-twin-turbo-specs-history-performance/
– https://www.motoringresearch.com/car-news/top-five-rotary-engined-mazdas/
– https://www.edmunds.com/mazda/rx-7/1985/review/]


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