New & Used Subaru WRX: In Depth
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The Subaru WRX and STI are performance-oriented, turbocharged versions of the Impreza four-door sedan and five-door hatchback models. Both models have turbocharged four-cylinder engines and all-wheel drive, instead of the typical big engine and rear-wheel drive formula.
The WRX is an exciting daily driver, but the STI is a true race car straight from the factory. Each is a rival for the likes of the Mitsubishi Lancer Evolution, another compact sedan with a high-performance turbo four and all-wheel drive. The duo are long-running adversaries, the rally-flavored version of Camaro versus Mustang.
MORE: Read our 2015 Subaru WRX and STI reviewThe WRX first arrived in 2002, and the STI followed two years later as a 2004 model. They were originally offered as two- or four-door sedans, and the current five-door hatchback version arrived in the 2008 model year. Many running changes were made over the first few models years, including fender flares for 2005 and new front-end styling in 2006. In the last year of the former generation, a WRX STI Limited model was also launched to add a bit of luxury to the severe standard model. Its amenities included leather upholstery, an optional moonroof, trunk spoiler, and fog lights.
The second-generation WRX, which arrived in 2008, wasn't well received by its fans in the first model year. They viewed it as underpowered and too softly sprung. Subaru listened to its buyers, and for 2009, the WRX's 2.5-liter turbocharged flat four engine got a boost of 41 horsepower, to 265 hp--and the STI was boosted to 305 hp. A five-speed manual gearbox remains standard, with an optional (and somewhat outdated) four-speed automatic offered as well. Maximum performance requires revving the engines, as both models exhibit a fair degree of turbo lag.They may be compact cars, but neither the WRX nor the STI is a fuel sipper. For many years, the STI has only ranked at an EPA 17 mpg city, 23 highway. Still, fuel efficiency is the job of the base Impreza; the WRX and STI are bought for performance. The current generation gets high marks for ride and roominess, as well as its acceleration and roadholding. Downsides are a high level of cabin noise and an occasionally balky shift linkage on the manual.
For 2011, Subaru gave the WRX a new look, with flared fenders, which helped the whole design "pop," while sound systems were also all-new that year, adding standard USB and iPod connectors plus available satellite radio. While the rest of the Impreza lineup was thoroughly updated for 2012, the WRX and STI continued essentially unchanged into 2013.
The new Subaru WRX and STI
A new WRX and STI were introduced for the 2015 model year. Still derived from the Impreza sedan, the sporty sedans and hatchbacks have a potent heartbeat--Subaru's turbo flat four--and innately stable all-wheel drive. They're a blast to drive, and a hundred times better perceived from the inside than from the outside.
The WRX takes the Impreza shell and stuffs it with a lovely 2.0-liter turbo four, with twin-scroll turbocharging and an intercooler, for a net 268 horsepower. It's coupled to either a six-speed manual or a CVT, and with different flavors of all-wheel drive, depending on the transmission. The CVT has programming to let it behave like an automatic transmission or a quick-shifting dual-clutch gearbox. The WRX also gets electric power steering and a sport-tuned suspension, all riding on 17-inch, 45-series tires.
Step up to the STI and its 2.5-liter four power cranks up to 305 hp, while the sporty underpinnings get even more work. The STI has its own gearbox, a stiffer suspension, better brakes, and a more customizable all-wheel-drive system. Power is delivered via a special Driver Controlled Center Differential (DCCD), bringing a helical limited-slip front differential and Torsen limited-slip rear diff.
The latest WRX has about an inch more wheelbase, so interior space is better, and the dash is more nicely finished than before. There's no mistaking it for an Audi S4--either inside, or in sticker price. Versus the last WRX, the new car gains almost two inches of rear-seat leg room, and a bit more trunk space.Among standard features, the WRX has a flat-bottomed steering wheel that tilts and telescopes; automatic climate control; Bluetooth; and steering-wheel audio and phone controls. The WRX STI adds sueded seats and LED headlamps.