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Subaru Impreza WRX STI

Subaru WRX STI

Subaru Impreza WRX STI
Production1992-2001 (GC)
2002-2008 (GD)
2008-present (GE)
Body Style(s)2-door coup�
4-door sedan
4-door station wagon
5-door station wagon
5-door hatchback
LayoutFront engine, four-wheel drive
Engine(s)2.0L H4
2.5L H4
Transmission(s)6-speed Manual
Wheelbase103.1 in (2619 mm)
Length4415 mm
Width1795 mm
Height1475 mm
Curb Weight3263 lb (1480 kg)
Engine(s) SpecsHorizontally Opposed 4 cylinder Dual AVCS 16 Valve DOHC twin scroll Turbo, variable valve timing
Power308 PS (304 hp/227 kW) @ 6,400 rpm
Torque422 N⋅m (311 ft⋅lbf) @ 4,400 rpm
Redline (RPM)6,700 rpm
Transmission(s) SpecsDCCD (Driver Controlled Center Differential), SI-DRIVE
Rated Performance
Top Speed155.3 mph (250 km/h)
Acceleration0-60mph (0-100 km/h) in 4.9 seconds
Standing 1/4 Mile13.6 seconds


The Subaru Impreza WRX STI (formerly STi, officially changed in 2006) is the highest standard-edition trim in the Subaru Impreza compact car line, produced by Japanese automaker Subaru.

In the late 1980s, Subaru created the Subaru Tecnica International (STI) division to coordinate development for the FIA World Rally Championship and other motorsports activities. After the company had grown, the division was used to create high-performance consumer versions of the Subaru Impreza WRX, an all-wheel drive car with a turbocharged flat-4 engine, leading to the development of the Impreza WRX STi. The Subaru World Rally Team has used a race-prepared version of the WRX STI as its rally platform since the model trim's creation.

The STI was originally sold only in Japan. It was later made officially available in Oceania (Australia had it in 1999 with the STi Version V). In 2001, Europe received the STi with the change of the chassis. After seeing the Impreza WRX sell at much better levels than expected, Subaru began selling the STI in North America in the spring-summer of 2003 as a 2004 model.

It should be noted that the Oceania and Europe actually had WRX STis in the region before the official versions. Car importation laws in those areas are much less rigid than America's laws. Thus, the grey markets has many earlier versions of the WRX STi. In most cases, the only way to legally import an earlier version of the WRX STi than the one offered is by registering it as a race or exhibition car. However, there is a 15-year rule that allows any car at least 15 years old to be imported into Canada.

Five (5) WRX STI S204 were made available to Subaru enthusiasts in New Zealand. However, unlike other S204s sent to other nations these five did not display either the in-cabin or in-enginebay badging that uniquely identifies each of the reported 600 vehicles manufactured. The lack of individual badging for these five cars brings into question the real number of S204s manufactured (and hence availability, rarity, and value).

Current Production (GE)

While the 2008 Impreza WRX was officially unveiled at the 2007 New York Autoshow, currently very little information is publicly known about the new STI. The STI will receive a higher degree of parts to differentiate it from its Impreza WRX brethren. Unlike the Impreza WRX, the STI will use aluminum body panels, will be available only as a 5-door hatchback, and will have different fenders than that of the WRX (breaking with previous tradition). Apparently, a Subaru rep stated to an IWSTI.COM member that the new STI would be 8.5" wider than the new WRX, and that power output would be at least 320 HP coming from a Legacy GT-derived 2.5L motor. According to leaked documents posted on, the Impreza WRX STI will be sold to public starting January 2008 as a 2009 model. (An update: It will be sold in December 2007 as a 2008 model.) At the New York Autoshow, a Subaru spokesman confirmed that the Impreza WRC will be based off the hatch platform, due to its lower polar moment of inertia.

The car will appear on its definitive version at the 2007 Tokyo Motor Show. Subaru has released official photos on 2007/10/11 [5]. A final announcement is scheduled for 2007/10/24. The J-spec version will have a 2.0L 304-hp EJ207 engine with a twin-scroll turbocharger, while other versions of the car will have a 2.5L 305-hp EJ257 engine with a single-scroll turbocharger.

The Subaru Website confirms that this latest US model of the STI will have 305 horsepower and 290 lb-ft. of torque. Edmunds Inside Line reveals a range in price from $35,640 to $39,440, depending on the options included.



The Subaru Impreza WRX STI participates in many motorsports including Rallying, Autocrossing, Road racing (including Super GT), Drifting and D1 Grand Prix

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Source: Wikipedia under the GNU Free Documentation License