2005 Subaru Impreza WRX STi review: 2005 Subaru Impreza WRX STi

It's not a particularly high-revving engine, which makes it easy to drive even in commute traffic, and with the $938 Performance Group 2B option, linkage to the six-speed manual gearbox shows a significant improvement upon earlier Subarus'. Not that much shifting is necessary with the STi's strong, wide power band. There is adequate but not excessive low-end power, with a strong rush from about 3,000rpm to just past the 6,000rpm power peak. The 2B package also includes a steering column-mounted boost gauge that's too small and too close to the driver to see well--under anything close to maximum acceleration, the driver's eyes had best be on the road ahead, not the instrument panel, which explains the red upshift light in the tach.

As with all Subarus, power gets to the ground through all four wheels, all the time. The STi gets the most performance-oriented version of Subaru's symmetrical all-wheel-drive system with the DCCD. This system provides automatic fore-and-aft torque distribution, with a static 35 percent front/65 percent rear distribution, or a driver-variable torque split as in pro rally cars. Programming for the DCCD has been revised this year to improve cornering ability in automatic mode. Additionally, both the front and rear differentials are limited-slip units for optimum side-to-side power distribution; the front differential is now a helical type for improved grip in tight corners.

Controls let the driver switch torque to manual and adjust the fore-and-aft ratio of power distribution in the all-wheel-drive Subaru WRX STi.

In high-performance driving situations, it works very well. Accelerating from 0 to 60 takes less than 5 seconds. The STi is set up for hard cornering, and the suspension tuning and extraquick steering mean that at speed, 100 percent of the driver's attention must be paid to driving. Yet it's docile in stop-and-go traffic and completely capable of living in the everyday world if you can stand the extra cabin noise.

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