The Subaru WRX STI was a higher-performance version of the Subaru WRX, available with six-speed manual transmission and full-time all-wheel drive (AWD). It was powered by a turbocharged flat-four ...

Subaru has revealed its new ... Using the 2015 WRX STI, we have seen gains in handling and cornering in both our stage rally and rallycross cars; which is a testament to advancements in design ...