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Detroit Auto Show: Subaru debuts 2015 WRX STI

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A small econobox sedan isn’t the traditional avenue for an automaker’s white-knuckle halo car. That’s just fine with Subaru, which has been doing things its own way for a while now.

The Japanese brand used the second media day at the 2014 Detroit Auto Show to unveil the all-new WRX STI, a high-performance sedan that’s been the cornerstone of Subaru’s street cred for years.

Power on the 2015 STI remains unchanged from the previous version, with a tidy 2.5-liter four-cylinder turbocharged to make 305 horsepower and 290-pound-feet of torque. A six-speed manual transmission remains the only way to change the car’s gears.

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PHOTOS: 2015 Subaru STI

Because the powertrain is essentially the same, zero-60 mph acceleration should happen in about the same 4.6 seconds as the previous model, Subaru said.

But expect big changes to the STI’s handling.

The new model has a stiffer chassis thanks to the increased use of high-strength steel. A new torque-vectoring system has been incorporated into the car’s electronic Vehicle Dynamics Control system. This VDC software allows drivers to choose between “normal,” “traction,” and “off” for the STI stability and traction control systems.

PHOTOS: Highlights from the 2014 Detroit Auto Show

All-wheel-drive, a long-standing hallmark of Subarus, is standard. But it’s no ordinary passive system on the STI. Drivers have further control over the car’s handling with three automatic AWD modes and one manual setup with six levels of adjustability. The tunability continues with three throttle and engine response settings.

Aesthetically, the STI sets itself apart from lesser models with a more aggressive front and rear bumper, a new hood with a microwave-sized air scoop, quad exhaust pipes, LED taillights, and the large boy-racer rear spoiler the STI is known for.

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Inside, upgrades include a flat-bottomed steering wheel, Alcantara seats and a 4.3-inch LCD screen that relays info like backup camera display, climate control and a boost gauge. Options include leather seats, a moon roof and a Harman/Kardon stereo.

DETROIT AUTO SHOW: Big trucks, fast cars and more

The STI is based on the also-turbocharged WRX sedan that was relaunched at the L.A. Auto Show in November. Both cars use Subaru’s compact Impreza sedan as their foundation. Despite their lame-duck status, both the WRX and STI models remained popular in 2013, with sales up 32% and 6%, respectively.

Pricing on the STI hasn’t been announced, but don’t expect all this to come cheap. The earlier STI started at $35,290 and topped out around $40,000 with all the trimmings. The STI goes on sale in March.

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