Mazda's Wankel rotary engine has always been unique in the automotive landscape as a mass-produced internal combustion engine that eschews such unsightly items as pistons, valves and camshafts. The Wankel packs lots of power into a very small package, but one thing it's never been is fuel efficient, despite its relatively meager 1.3-liters of displacement. It seems the Japanese automaker is working hard to change that reputation with the next generation of the RX series.
Say what you will about the styling of the Mazda Taiki concept that's currently on display in Tokyo. It's quite possible that what's underneath is more interesting, anyway. Under the hood of the Taiki is a new gen rotary engine from Mazda called the 16X Renesis. Of course, the Rotary engine has its share of detractors, but Mazda's sticking with it anyway.