Subaru introduces a new 4-door version of the Impreza WRX STI performance flagship model for 2011. This is the first time that the WRX STI is 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.

The 2011 WRX STI is the ultimate-performance Subaru with its high-boost 305-hp turbocharged/intercooled Boxer engine teamed with a 6-speed manual transmission and the exclusive Multi-Mode Driver Controlled Center Differential version of Symmetrical All-Wheel Drive.

The new 2011 WRX STI 4-door design is based on a "wide and low" concept that gives the car an aggressive road presence. In front, the 2011 WRX STI models feature sharpened bumper corners and wider, blacked-out fog lamp nacelles to accentuate the "wide and low" profile. A jutting lip spoiler with three-dimensional detailing emphasizes the cars' sporty intent. The new front grille with a black grille inset and blacked-out Subaru floating wing give the front a powerful appearance.

Major changes to suspension tuning for the 2011 WRX STI include a lowered ride height and new pillow-ball bushings in front and stiffer bushings for the rear subframe that supports the double-wishbone suspension.

New for 2011, the standard audio system features an AM/FM stereo with single-disc CD player and six speakers; a 3.5mm auxiliary input jack; Bluetooth hands-free calling and audio streaming; iPod control capability; a USB port and XM/SIRIUS Satellite Radio capability.