Drivetrain The Taiki uses a front engine, rear-wheel drive layout and is powered by Mazda's next generation RENESIS rotary 16X engine, which is mated to a 7-speed, double-clutch gearbox. The 16X engine is said to replace the RX8's 13B engine.The exterior design is inspired by flowing robes and carp streamers. The Taiki has scissor doors and a very impressive drag coefficient of 0.25. Even the wheels and tires were designed with aerodynamics in mind.