The Subaru Impreza was introduced in early 1993 as a four-door sedan or five-door hatchback . A two-door coupe was launched two years later. Initial engine choices included 1.6-, 1.8- and 2.0-liter flat-four engines, but Subaru later added 2.2- and 2.5-liter units as well. As the first-gen Impreza soon made a huge name for itself in rally racing, the technology made it onto the road under the WRX moniker. The iconic WRX STI model was born in 1994. The second-gen model arrived in 2000, boasting major design and technology changes, and it arrived int he U.S. for the 2002 model year. Redesigned yet again in 2007, the WRX’s engine remained largely unchanged internally, while output increased to 227 horsepower. The fourth-gen WRX (second-gen in the U.S.) was unveiled for the 2015 model year with a more aggressive design, and a 2.0-liter engine rated at 268 horsepower and 258 pound-feet of torque. As we move toward 2015, Subaru is introducing a brand-new iteration of the WRX to slot between the standard version and range-topping STI.
Dubbed WRX S4, the new sports sedan is essentially an upgrade to the standard WRX with a hefty power increase for the 2.0-liter flat-four. Developed during Subaru’s racing program for the 24 Hours of Nurburgring , the new mill is not only more powerful, but boasts improved fuel efficiency as well. Rounding up the package is a slightly revised skin and a unique interior along with upgraded steering and additional safety features. Read on to find out what makes the WRX S4 a truly unique machine.
Click past the jump to read more about the Subaru WRX S4.