The 2008 STI get a major redesign and is barely recognizable when compared to the previous generations. The revised engine now makes 305hp (SAE) a gain of 12 over the previous generation thanks to its Dual Active Valve Control System. Peak torque is the same at 290 but is available at 400rpms earlier.

The DCCD system now offers three selectable automatic performance modes in addition to the six manual differential-locking settings. For the first time, the DCCD AWD system integrates the Vehicle Dynamics Control (VDC) stability and traction control system, also with three driver-selectable positions.