
Subaru announced on 3 September 2018 that it will set a new grade “STI Sport” on the sports sedan “WRX S4” and it was released on September 21 the same year for the Japanese market.
WRX S4 STI Sport is a new top grade model of WRX S4. “In collaboration with Subaru’s motorsports headquarters STI, we have achieved a performance that combines supple riding comfort with agile handling and high handling stability as well as a special interior and exterior design unique to STI Sport I adopted it and pulled out the potential possessed by WRX S4 to the utmost. ”
Main special equipment is as follows.
Subaru WRX S4 STI Suspension / Mechanism

- The engine is the same as in the regular WRX S4: 2.0-liter four-cylinder Boxer Engine unit rated at 300 PS (296 hp) and 400 Nm (295 lb-ft) of torque, mated to a Sport Lineartronic CVT automatic and Subaru’s AWD system.
- 245 / 40R18 tire, 18-inches × 8 1/2 J aluminum wheel (dark gray metallic paint)
- STI Tuning Bilstein Damper & Coil Spring (Front: Dampmatic II, Inverted Type)
- Electric power steering with high rigidity clamp stiffener (left and right)
Subaru WRX S4 STI Exterior Design

- WRX S4 STI Sport front grill (dark metal paint)
- Side garnish with STI emblem (black colored)
- STI emblem (front & rear)
- Black colored door mirror
- Trance clip spoiler (black colored)
- Shark fin antenna (black colored)
Subaru WRX S4 STI Interior Design
Subaru WRX S4 STI Interior Design
- Genuine leather-wrapped steering wheel (red stitch + high tactile leather + high-gloss black bezel with STI logo)
- Genuine leather-wrapped shift lever (red stitch + high tactile leather + high gloss black decorative panel)
- RECARO front seat (black × Bordeaux, red stitch + STI logo included)
- STI logo stainless steel side sill plate (front)
- Felt wrapped front & rear large door pocket (with bottle holder)
The price is 4,093,200 yen (roughly $38,850), the body color is a lineup of all six colors of ice silver metallic, crystal white pearl, dark gray metallic, crystal black silica, pure red, WR blue pearl.
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