The Subaru Impreza WRX STI is the highest trim in the Subaru Impreza compact car line, produced by Japanese automaker Subaru. In the late 1980s, Subaru created the Subaru Tecnica International division to coordinate development for the FIA World Rally Championship and other motorsports activities. After the company had grown, the division was used to create high-performance consumer versions of the Subaru Impreza WRX, an all-wheel drive car with a turbocharged boxer engine, leading to the development of the Impreza WRX STi. The Subaru World Rally Team has used a race-prepared version of the... WRX STI as its rally platform since the model trim's creation. The Impreza WRX STi was originally sold only in Japan. It was later made officially available in Oceania . In 2001, Europe received the STi with the change of the chassis. Subaru began selling the STI in North America in the spring-summer of 2003 as a 2004 model. Oceania and Europe had WRX STis in the region before the official versions via grey-market importing. It has a long time rivalry against the Mitsubishi Lancer Evolution. There were six versions of the STi.
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