AEM Adjustable Fuel Pressure Regulator The Honda S2000 is a roadster manufactured by the Japanese automaker Honda Motor Company. It was launched in April 1999 and was created to celebrate the company's 50th anniversary. The car was first shown as a concept at the Tokyo Motor Show in 1995, following which it was launched in world markets in 1999. The S2000 is named for its engine displacement of 2 L, carrying on in the tradition of the S500, S600, and S800 roadsters of the 1960s.