The WRX STI has been a recipient of continuous improvement since its introduction. Most recently, the 2010 WRX STI Special Edition previewed some of the suspension enhancements now migrated to the 2011 WRX STI. Thorough and painstakingly detailed chassis development, including testing on Germany’s famed Nurburgring racetrack, has resulted in the best-handling Impreza WRX STI models Subaru has ever offered.
The STI retains its 305 hp and 290 lb-ft of torque; while the WRX gets 265 hp and 244 lb-ft of torque. Only manual transmissions are offered: a six-speed in the STI and five speed in the WRX. Subaru does not have technology for a twin-clutch automatic transmission now, but product planners are open to the idea for next generation car. But since Subaru uses in-house transmissions and not off the shelf units from other companies, it might be a while before a dual-clutch gearbox is mounted to a Subaru boxer engine.
With the WRX STI 4 doors sedan model, newly designed wider rear fenders are stretched out on the side more than the tail lamps, and this accentuates a look of stability. A striking larger rear spoiler was exclusively designed for the STI 4 doors. The new design details contribute to an improved drag coefficient, and the rear spoiler design contributes to stable high speed handling and achievement of zero lift. The WRX STI 4 doors features its own version of the polished stainless steel quad tailpipe exhaust, with tailpipe diameter enlarged to three inches.
Specification
* Type of engine: H4, 2.5-liter, DOHC, turbocharger and intercooler
* Horsepower: 265 hp @ 6000 rpm
* Torque lb-ft (Nm) at RPM: 244 lb.-ft. @ 4,000 rpm
* Weight: 3,208 lbs
* Price (est): $34,720
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