This Is The Most Powerful Subaru WRX STI Ever

Special Edition

We want it. Badly.

We’re always grumbling that the Subaru WRX STI needs more power. In the US, the 2019 Subaru WRX STI packs a 2.5-liter turbocharged flat-four engine that delivers 310 hp and 290 lb-ft, which leaves a lot to be desired. Granted, it isn’t slow by any means, but it’s disappointing when you consider it’s only had an incremental 5 hp increase since it first went on sale in the US back in 2004.


It also doesn’t help that there have been several special edition WRX STIs sold outside of America with more power under the hood. Not that we're envious or anything. Sadly, this latest special WRX STI doesn’t buck the trend, because it’s only available in South Africa. It's called the Subaru WRX STI Diamond Edition, and it's quite simply the most powerful WRX STI ever made. We want it. Badly.

Built by Subaru South Africa to commemorate the 30th anniversary of Subaru’s in-house motorsports division, Subaru Tecnica International (STI), the Subaru WRX STI Diamond Edition’s boxer engine output has been boosted to 349 horsepower thanks to a remapped ECU and a performance exhaust upgrade. According to Subaru South Africa, these tweaks enables the special Subaru to sprint to 62 mph in five seconds, which is around a second faster than the regular WRX STI. Top speed still sits at 158 mph.

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As well as a performance upgrade, the wheels have been spaced out. As a result, the Diamond Edition is 0.8 inches wider than the standard WRX STI. To help it stand out, the car also wears a flashy body kit finished in the same High Viz yellow hue as the Brembo brake calipers. The kit lowers the car by 0.3 inches at the front, giving it a sportier stance. Commemorative 30 Diamond Edition badging also adorns the exterior along with a stainless steel STi badge. Inside, the Diamond Edition gets unique driver and passenger side dashboard inlays and a numbered panel on the driver side.

Production of the Subaru WRX STI Diamond Edition will be strictly limited to just 30 units exclusive to the South African market. Each one will cost R799 000, which is around $56,000.

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