Justin Cupler has been a member of the TopSpeed team since 2012. Justin's love for cars started back when he was just five years old, helping his dad work on his 1957 Chevy Bell Air and then his 1966 ...

You hear endless myths about the Mazda RX-7, from breathless praise of its “magic” to horror stories about blown apex seals.

The rotary engine was an unconventional design that delivered great power for its size. Here's what's good and bad about it.

It rose to prominence in the Mazda RX-7 model line, but the last new car feature one was the Mazda RX-8. Since then, Mazda has been continually developing the technology with the aim of bringing it ...

Antonio is a chemical engineering student pursuing his master's degree in chemical engineering and sustainable processes. Throughout his academic journey, he has gained substantial knowledge in areas ...

The R130 was a very rare model, produced for only three years and with fewer than 1,000 units built. It was also notable as the only front-wheel-drive Mazda model powered by a rotary engine until the ...

The traditional piston engine has garnered the vast majority of attention and application in the internal combustion age, but there was another: the Wankel rotary engine. German engineer Felix Wankel ...

Last year, Mazda celebrated forty years of rotary-engine zoom. We ate cake, fantasized that a new rotary might soon resuscitate the RX-7, and then began compiling these cool facts related to Felix ...

It's anyone's guess how or why Mazda thought it was a good application for its famed rotary engine. Mazda’s MX-30 has one of the shortest ranges of any EV on the market, with an EPA-estimated range of ...

When Dr. Felix Wankel created an engine that could produce big power while taking up the smallest space possible, who would have expected the tuning world to accept it with such open arms? Considering ...

Perfectly tuning the heat range of an engine's spark plugs is something of a dark art to all but the most well versed tuners and the engineering egg heads at automotive OEMs. Getting the spark plug ...

This file type includes high resolution graphics and schematics when applicable. Automotive engineers are concerned with weight-to-power ratios when designing vehicles. While light-weighting is a ...