If we told you to guess what 13B rotary-powered sports car whose two-syllable manufacturer's name starts with M and whose model names start with R, the Maxton Rollerskate would be the first thing ...

This rare engine vastly improved the performance of a legendary JDM model, but was only available for a short time, find out ...

Of course, the Rotary engine has its share of detractors, but Mazda's sticking with it anyway. Further refining Felix Wankel's trochoid wonder, the Renesis (known internally as the 13B-MSP ...