Subaru has released a new video explaining what has changed in the new 2015 WRX STI which is currently being showcased in Detroit.

Subaru has released a new video explaining what has changed in the new 2015 WRX STI which is currently being showcased in Detroit.

Subaru of America national manager Dominick Infante talks about the 2015 WRX STI and uses the "all-new" expression several times throughout the entire video letting us know we are dealing with an entirely different car than its predecessor.

At its heart is a 2.5-liter four-cylinder turbo boxer engine outputting 305 bhp (227 kW) at 6,000 rpm and 290 lb-ft (393 Nm) at 4,000 rpm. Its lesser sibling, the WRX, packs 268 bhp (200 kW) and 258 lb-ft (349 Nm) from a smaller 2.0-liter four-cylinder turbo boxer motor. Subaru hasn't released performance figures for the STI version but it should be a tad quicker than the WRX which needs "just over" five seconds to hit 60 mph (96 km/h) from a standstill when equipped with the manual gearbox.

The WRX STI will be sold only with an upgraded six-speed manual transmission delivering output to the symmetrical all-wheel drive system featuring a driver-controlled multi-mode center mechanical differential. It will come with 18-inch alloys shod in 245/40 R18 performance tires and will be equipped with an inverted-strut front suspension.

Available strictly as a sedan, the 2015 Subaru WRX STI is scheduled to go on sale in the following months.

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Subaru explains what's new in the 2015 WRX STI