The three-rotor 20B-REW was only used in the 1990-1995 Eunos Cosmo and a total of 3,550 were built which made the triple rotor 20B-REW version a rare engine.It was the world's first volume production twin-turbo. It displaced 1962 cc (three 654 cc rotors) and used 0.7-bar (10.2 psi) of turbo pressure to produce 300 horsepower (224 kW) and 300 foot-pounds force (407 N·m).