Subaru of America introduced a new 4-door version of the Subaru Impreza WRX STI performance flagship model. This will be the first time that the Subaru Impreza WRX STI has been offered in two body styles (5-door and 4-door). In addition to the new styling, the 2011 WRX STI features significantly revised suspension tuning and lighter 18-inch wheels for even sharper handling.lanjut.apakah before