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Subaru, FHI has announced the WRX STI and S4 for the Japanese market. The Subaru WRX STI gets a more refined body, chassis, and the ultimate in Subaru all-wheel drive (AWD) sports performance. The WRX S4, meanwhile, gets the refined AWD with Sport Lineartronic transmission and a 2.0-liter turbo (DIT) engine.

The flagship WRX STI now has a unified design, especially at the front-end, which comprises a dynamically-shaped nose cone, hexagonal grille and new hawkeye LED headlights for that aggressive, wide and low styling impression.

A More Expressive WRX than ever: the Subaru WRX STI

Side profile-wise, the bottom end of the A-pillar has been extended 200 mm toward the front from the previous WRX STI, and the C-pillar now smoothly transits into the trunk surface for a flowing silhouette. Front fender ducts and special sharp side sill spoilers show off the sporty nature of the WRX STI.

From the rear, the STI now has a diffuser-integrated bumper with twin dual mufflers to emphasize the low center of gravity and performance enhancing benefit. Specially designed rear combination lights were given a thin shape to highlight vehicle width. A large rear spoiler also enhances aerodynamic and presents the top grade variant of the WRX series. Last but not least, a shark fin antenna, lighter 18-inch wheels and STI emblems on the front grille and front fenders are unmistakable trademarks of the WRX STI.

Interior-wise, the solid black based WRX STI gets a D-shaped steering with plenty of decorative carbon trim panels and metal trim accents. Additionally, red accents on the seats, as well as  the famous STI emblems on the headrests, shift lever and center of instrument panel; all exclusive to the flagship WRX. All these elements display Subaru’s intentions to offer an interior to bring out the WRX STI’s racing image. On the instrument cluster, the aluminium-ring meters employ a red lighting dual dial layout with white horizontal needles and a 3.5-inch full color LCD. Lastly, the multi-function display is equipped with a boost pressure display screen for a functional purpose.

The WRX STI is powered by a turbocharged 2.0-liter Boxer engine with 6-speed manual transmission and multimode Driver’s Control Center Differential (DCCD) system. It pushes power output to 308 PS at 6,400 rpm and 422 Nm of torque at 4,400 rpm.

Specially developed suspension further enhances chassis rigidity on the WRX STI to enhance steering response, rear grip, and flat ride. Handling characteristics honed to cope with driving conditions anywhere in the world, including the punishing track of Germany’s Nürburgring circuit, offer agile driver response and more precise and stable cornering, while also enhancing steering stability and ride comfort.

The S4 is the alternative version to the WRX world

The WRX S4, like the flagship, gets that improved ‘Unified’ design motif, but the rear combination lights have a thin shape to highlight vehicle width. In addition, a smaller rear spoiler is instilled to offer adequate aerodynamics. Also, the S4 has a larger wheelbase, which is enlarged by 25 mm.

On the inside, the refinements include D-shaped steering, red-stitched leather-finish gearshift boot, Piano black finishes and metallic accents. Everything else on the inside follows that of the STI version. The one thing that stands out on the equipment list for the S4  is Subaru’s EyeSight driving assist system.

The capable 2.0-liter Horizontally-Opposed direct injection turbo “DIT” engine powers the S4 to 300 PS at 5,600 rpm and 400Nm of torque at 2,000 to 4,800 rpm, while still achieving a fuel economy of 13.2 km per liter.

The Subaru WRX STI and S4 are both available in Blue Pearl or Crystal White Pearl shade, and at the moment are exclusive to the Japanese market.