2015 Subaru WRX STI
you have seen the new Rex, now meet the one that sits on the top of the food chain: the 2015 Subaru WRX STI. officially unveiled at the Detroit Auto Show, this top-grade model of the WRX series is powered by a 2.5-liter turbocharged boxer engine, pumping out 305 horsepower and 290 lb-ft of torque.