Evolution IX marks the 12th model in the series, which has also included an automatic transmission model, since the Lancer Evolution debuted in October 1992. Major features distinguishing the latest model include the adoption of Mitsubishi's proprietary MIVEC*1 variable valve timing technology in the intake system and improvements to the turbocharger that result in higher torque and produce better response for improved engine performance across its full rev range. New front and rear bumpers bring both high aerodynamics and cooling performance.

For Evolution IX the 4G63 engine gains Mitsubishi's MIVEC variable valve timing technology that improves top-end output as well as fuel efficiency. MIVEC technology allows GSR to return 10.0 km/l in the Japanese 10-15 mode driving cycle, equivalent to a three percent improvement in mileage.