The 3rd generation Impreza debuted in May of 2007, and its long awaited STI version was added to the lineup in October of the same year. The new Impreza was no longer a four door sedan as in the past, it now came in a new 5 door hatchback body. And though the wheel base was extended by 3.9 inches in comparison to the previous model, the total length of the new car was actually shorter by 1.9 inches because the rear trunk section was now much shorter.