Saab 9-2X

Subaru Impreza (Second Generation)

Company type	Automobile model
Industry	Automotive
Founded	2000
Defunct	2007
Headquarters	Ōta, Gunma , Japan
Products	Compact car (sedan and hatchback), WRX and WRX STI performance variants

Subaru Impreza (Second Generation)

The second iteration of the Subaru Impreza compact car debuted in 2000 and was produced until 2007 by Subaru at their facility in Ōta, Gunma, Japan. This generation was offered in two body configurations: a four-door sedan known as the GD series, and a five-door Hatchback designated as the GG series. Throughout its production run, the model underwent two mid-cycle updates.

Engine options included naturally aspirated flat-four units with displacements of 1.5, 1.6, 2.0, and 2.5 liters. The sportier WRX and WRX STI variants were equipped with turbocharged versions of the 2.0 and 2.5-liter engines to enhance performance. While export versions generally featured all-wheel drive, the Japanese domestic market also had front-wheel drive configurations available.

Pre-facelift (“Bug-eye”): 2000–2002

The Impreza was developed on a heavily revised iteration of the initial generation platform, maintaining a design approach similar to its predecessor, including a comparably shaped profile. Despite this continuity, the front fascia—characterized by rounded headlamp units—sparked considerable debate among enthusiasts and critics alike. This generation earned the nickname 'Bug Eye' within the Subaru community. The sedan's exterior dimensions were expanded by 45 mm (1.8 in) in length, 40 mm (1.6 in) in width, and 25 mm (1.0 in) in height, while its wheelbase grew by 5 mm (0.2 in). To comply with Japanese vehicle size tax regulations, the hatchback’s width was increased by only 5 mm (0.2 in), reaching 1,695 mm (66.7 in), thus remaining within the "5" tax classification. Subaru’s intention to homologate the sedan chassis for rally competition led to the decision to widen the sedan, which consequently placed it into the higher taxed "3" category, enhancing its stability. Correspondingly, the sedan's track was widened by 20 mm (0.8 in), aiding handling performance, whereas the hatchback saw a modest 5 mm (0.2 in) increase. Other significant chassis enhancements included a 120 percent improvement in torsional stiffness, largely attributable to modifications in the front subframe design. The suspension system preserved its fundamental MacPherson strut setup at both front and rear but featured revised geometry.

The GD chassis added nearly 200 kg (441 lb) compared to the GC platform. Subaru asserts that this new chassis exhibits 148 percent greater torsional rigidity and 82 percent higher beam stiffness than its predecessor. This increased rigidity is mainly due to a steel reinforcement “ring” encircling the cabin at the B-pillar area. While this structural enhancement was primarily aimed at improving occupant safety, it also contributes to enhanced stability in motorsport applications. According to Firehouse magazine, cutting through Subaru's B-pillars during rescues requires special attention due to this reinforcement. Regarding safety performance, the GD chassis notably outperformed the GC version, achieving a "Good" rating—the highest possible—in the IIHS offset crash test. Additionally, it earned 4-star ratings for front driver and side impact protection and a 5-star rating for front passenger safety from the NHTSA.

Within Subaru’s domestic market of Japan, the Impreza lineup commenced with the 1.5i model, powered by a 1.5-liter EJ15 SOHC engine offered with either a manual transmission or an optional automatic transmission. A DOHC variant of this engine equipped the automatic-only 1.5R model, which also incorporated an active valve control system. Both front-wheel drive and all-wheel drive configurations were available for these variants. Beginning in 2006, Subaru replaced the EJ15 engine with the newer EL15 powerplant.

In Greece, a turbocharged version of the 1.6-liter engine was marketed. Alongside turbocharging, this variant featured updated engine mapping, upgraded fuel injectors, revised pistons, a dual exhaust system, and a medium-sized rear spoiler. This configuration produced 180 PS (132 kW; 178 hp).

Subaru introduced this generation of Impreza to North America in 2001 as a 2002 model year release. However, the turbocharged 2.0-liter WRX model with 169 kW (230 PS; 227 bhp) output was not launched until 2002 model year production, while the Impreza WRX STI arrived later in 2004. The U.S.-market STI diverged from its Japanese and European counterparts by employing a turbocharged 2.5-liter EJ257 engine instead of the twin-scroll turbocharged 2.0-liter unit sold elsewhere. From 2006 onward, all American Impreza models utilized some form of the 2.5-liter EJ25 engine across both naturally aspirated and turbocharged variants.

In Australia, the Outback Sport was retailed between model years 2001 and 2007 but was rebranded as the Impreza RV while retaining color schemes similar to those used in North America. The Australian version featured a transfer case with dual-range manual transmission functionality not offered in U.S. models. Notably, Wheels honored the Impreza as their Car of the Year for 2000.

• Sedan (pre-facelift)
  Sedan (pre-facelift)
• Wagon (pre-facelift)
  Wagon (pre-facelift)

Initial Facelift (“Blob-eye”): 2002–2005

Following a mixed reception to the circular headlight design, Subaru collaborated with Peter Stevens from Prodrive in 2001 to refresh the front end of the Impreza in 2002 (introduced in the US for the 2004 model year). This update featured more angular, rectangular headlights. Within the US lineup, the facelifted Impreza was available as the 2.5 RS Sedan and TS Wagon, 2.5 Outback Sport Wagon, WRX Sedan and Wagon, along with the newly introduced WRX STI Sedan. The RS offered an optional Sport Package, while Premium Package options were available on the WRX. Manual and automatic transmissions were offered for the RS, TS, Outback Sport, and WRX models; however, the STI came exclusively with a 6-speed manual gearbox. Post-facelift, a sedan variant without the wide fender flares was sold in Japan. Enthusiasts commonly refer to this generation as the 'Blob Eye' due to its distinctive headlight shape.

In 2005, Subaru standardized their AVCS technology across all Impreza engines.

• Sedan (initial facelift)
  Sedan (initial facelift)
• Sedan (initial facelift)
  Sedan (initial facelift)
• Wagon (initial facelift)
  Wagon (initial facelift)

Second Facelift (“Hawk-eye”): 2005–2007

Beginning in June 2005 for Japan’s 2006 model year, the Impreza underwent a redesign featuring updated headlights, taillights, and bumpers. The refreshed front styling was crafted in 2004 by Greek designer Andreas Zapatinas, formerly of Alfa Romeo. This facelift introduced Subaru’s new corporate front design, characterized by the distinctive "jet intake and wings" grille first seen on the Subaru R2 kei car. This design element serves as a tribute to Subaru’s heritage in aircraft manufacturing through the Nakajima Aircraft Company. Among Subaru fans, this iteration is known as the 'Hawk Eye' due to its sharp headlight styling.

• Sedan (second facelift)
  Sedan (second facelift)
• Sedan (second facelift)
  Sedan (second facelift)
• Wagon (second facelift)
  Wagon (second facelift)

WRX

File:2002-03 Subaru WRX sedan.jpg

Pre-facelift Subaru Impreza WRX sedan (US)

In December 2000, Subaru launched the second generation of the WRX. The GDA WRX continued utilizing the 5-speed manual transmission inherited from the GC8 platform. Subsequently, a more robust 6-speed transmission was introduced for the STi GDB model.

Throughout its lifecycle, the GD chassis and its WRX/STI variants experienced two major styling updates. The initial design applied to versions A and B met with limited enthusiasm, leading to a more conventional appearance for models C through E. The second facelift was implemented on versions F and G.

The WRX STI upgraded its wheels from 16 in × 7 in (410 mm × 180 mm) to 17 in × 7.5 in (430 mm × 190 mm) alloys. The previously criticized 5-speed manual gearbox was replaced by an STI-developed 6-speed manual transmission. Retaining the Version 6 STi engine block labeled as EJ207, it featured a semi-closed deck design and incorporated AVCS technology to enhance low-end torque. Interior enhancements included an STI emblem on the instrument cluster and a red shift light on the tachometer. Brembo brakes with four-piston calipers at the front and two-piston calipers at the rear were standard on the STI; these were optional on the stripped-down Type RA STI which came equipped with Subaru's standard four-piston front and two-piston rear brakes. Externally, STI models sported a larger hood scoop and fog light covers embossed with the STI logo. The DCCD system was upgraded to integrate with anti-lock brakes, automatically switching to open mode during ABS activation.

Subsequent naming conventions dropped version identifiers; however, enthusiasts commonly refer to chassis codes such as GDB or GDF—where 'B' or 'F' denote STi models ('F' typically refers to USDM variants), while 'A' is associated with standard WRX models. The fourth character of each VIN indicates revision status from A through F, with G representing the 2007 update.

By 2000, markets across Asia, Oceania, and Europe had received this new STi variant. To comply with emission regulations, engines were detuned accordingly. Power outputs varied between approximately 265 PS (261 hp; 195 kW) at 6,000 rpm with 35 kg⋅m (343 N⋅m; 253 lbf⋅ft) torque at 4,000 rpm and up to 280 PS (276 bhp; 206 kW) at 6,400 rpm producing 38 kg⋅m (373 N⋅m; 275 lbf⋅ft) torque at 4,000 rpm depending on regional specifications.

The 2005 STi models introduced DCCD control previously unavailable in some markets and featured a slight wheelbase extension aligning with Japan’s WRX STi Spec-C specifications while maintaining an output of 280 PS (210 kW; 280 hp).

Japan

Applied A (2000)

In August 2000, the 2001 WRX NB sedan was introduced. It featured an EJ205 engine equipped with AVCS and an IHI TD04-HL turbocharger. This powerplant delivered 250 PS (184 kW; 247 hp) at 6,000 rpm alongside 35 kg·m (246 ft·lbf, 333 N·m) of torque at 3,600 rpm. The vehicle rolled on 16 in (410 mm) wheels and employed a braking system consisting of 2-pot front and 1-pot rear calipers. The front brake discs were ventilated, while the rear ones were solid. A Torsen limited-slip differential was fitted at the rear, paired with a 4.44 final drive ratio. The transmission featured close-ratio gears unique to Subaru's Japanese market models at that time. The car's curb weight stood at 1,340 kg (2,954 lb).

Besides the WRX Type RA STi, the Sports Wagon STi model continued from its predecessor, retaining the 4-pot front and 2-pot rear Subaru calipers and utilizing narrower 17" wheels sourced from the Legacy. Much like the GDB generation, the foglight covers bore a white STi emblem. The WRX Type RA STi served as a homologation model for Group N competition.

Applied B (2001)

The 2002 model year WRX NB sedan was launched in September 2001. Its mechanical specifications largely mirrored those of the previous year, although curb weight increased slightly to 1,350 kg (2,976 lb).

The entire Impreza lineup, including the WRX STi, received subtle updates to the grille and bodywork by designer Peter Stevens, lending a more angular profile when viewed from the side. The STi logo on the foglights was updated to a pink hue. Aside from minor suspension refinements and a modest torque boost, most components remained unchanged.

Replacing the Type RA was the WRX STi Spec C model, which was significantly lighter due to the use of lighter glass and body panel materials. Handling improved notably thanks to an increase in caster from 3.5 to 5 degrees—not by altering suspension mounts but by extending the wheelbase by 15 mm (0.6 in) through revised control arms. This caster adjustment enhanced turn-in response considerably.Template:Fix/category Additionally, the Spec C featured a quicker steering rack ratio of 13:1 and included a dedicated oil cooler for its transmission.

Production of the Sports Wagon STi had ended by this stage.

Applied C (2002)

November 2002 saw the release of the WRX NB-R sedan. Power and torque outputs remained consistent with prior models. Wheel size increased to 17 inches in diameter. The rear brake rotors were upgraded to ventilated discs, making all four brakes ventilated units with a 4-pot front and 2-pot rear setup. The rear wing was mounted on risers, and curb weight rose slightly to 1,361 kg (3,000 lb).

This WRX STi variant also served as a homologation vehicle for Group N racing.

Applied D (2003)

The WRX lineup underwent exterior styling updates and received an enhanced transmission system. Notably, the WRX STi became available with Subaru’s DCCD system.

The WRX STi Spec C Type RA debuted featuring carbon-fiber components including a wing and lip spoiler, along with new BBS wheels and an engine tuned for improved performance.

Also introduced was the WRX STi V-Limited edition equipped with four-way adjustable dampers calibrated by Subaru World Rally Team’s Group N driver Toshi Arai. This generation of WRX STi continued its role in Group N homologation.

Applied E (2004)

The WRX WR-limited model arrived featuring an STI spoiler and front chin spoiler along with a titanium shift knob adorned with a WR sticker. Wheels were upgraded to gold-colored Rays-sourced STI alloys.

This marked the first Impreza STi model officially offered in the United States market. Subaru unveiled it at the Detroit International Auto Show shortly after Mitsubishi announced their Lancer Evolution VIII boasting 271 horsepower—surpassing the output of this 2.0L WRX.

Applied F (2005)

An optional spoiler matching that on the WRX STI became available for WRX models, which also gained a viscous rear LSD.

The WRX STi adopted the extended wheelbase previously exclusive to Spec C variants and added wider rear fender flares to accommodate larger wheels—upgrading from 17 in × 7.5 in (430 mm × 190 mm) to 17 in × 8 in (430 mm × 200 mm) dimensions. Steering lock-to-lock turns were reduced accordingly, while wheel hub strength improved alongside a change in bolt pattern from 5 x 100 mm to 5 x 114.3 mm. Interior quality was enhanced significantly through an all-new center console, elevating cabin refinement.

The Spec C received dampers tuned by Toshi Arai, along with a 21 mm (0.8 in) swaybar. Rear suspension bushings switched from rubber to pillowball types, while strut towers were reinforced for better handling stability and ride comfort. Engine mounts were replaced with liquid-filled plastic units aimed at reducing cabin vibrations—though some owners reported issues with these mounts on 2006 models; Subaru offered warranty replacements reverting to earlier rubber mounts. Updates to the DCCD system incorporated a torque-sensing mechanism altering torque distribution to a 41/59 split front-to-rear. The Spec C continued as a Group N homologation vehicle.

File:ImprezaWRX STI specCtypeRA-R.01.jpg

Subaru Impreza WRX STI Spec C Type RA-R

In November 2005, Subaru released the WRX STI Spec C Type RA limited to just 350 units. Building upon the Spec C platform with parts from STI’s catalog, it featured four-way adjustable inverted STI struts, pink STI Japan-spec springs, STI rear lateral and trailing links, an STI 21 mm (0.8 in) rear sway bar, pillowball rear suspension components, an STI 110 mm (4.3 in) opening rear axleback exhaust system, Enkei-made STI-branded 17 in × 8 in (430 mm × 200 mm) wheels, and an STI V-lip front spoiler.

Applied G (2007)

Mechanically unchanged from its predecessor Japan-spec version, this iteration of the car featured some refinements for the STI variant: it adopted a VF43 turbocharger with an enlarged wastegate port designed to mitigate boost creep (as opposed to VF39 used previously) and revised gear ratios in its six-speed manual transmission. Additionally, top-feed fuel injectors replaced earlier side-feed types found on USDM models between 2004-06; consequently, intake manifolds and TVG (Tumble Valve Generators) configurations were modified for emissions compliance during cold starts.

Special Editions (STI)

S202 STi

The S202 is part of Subaru’s S-series Imprezas derived from the lightweight Type RA Spec C platform—“RA” standing for “Record Attempt.” Recognized as one of the most extreme factory-built STis ever produced, it earned praise from rally driver Petter Solberg who noted its driving feel closely resembled his WRC car among all road-going Imprezas he tested. Equipped entirely with parts from STI’s catalog including suspension and drivetrain components, it featured special edition seats embroidered with red STi logos and a smaller air conditioning compressor for weight savings.

Limited to just 400 units for Japan’s domestic market—sold out within two weeks—each car bore individually numbered badges beneath the ashtray. Despite retaining electric windows and air conditioning, it weighed approximately 140 kg (309 lb) less than standard STis at 1,330 kg (2,932 lb), impressive given its AWD layout. Weight reduction measures included removal of heavy carpeting, use of lightweight aluminum hood panels, thinner door skins and glass windows plus specially fitted lightweight lower arms and alternator components unique to this model.

Distinctive pink STi lateral links set it apart visually while brake rotors employed gas slotted designs for enhanced performance. Steering racks featured uprated ratios; internally molybdenum-coated pistons reduced friction alongside hollow intake valves optimized power delivery. The AWD system combined a Suretrac differential up front with mechanical locking diff at the rear.

STI-branded Rays Volk alloy wheels completed its rally-inspired exterior which included an adjustable carbon-fiber GT-style wing—exclusive to these 400 units—and manually operated roof vent reminiscent of rally cars. Additional rally-oriented features comprised steel-braided brake lines, a twelve-liter intercooler tank positioned at the rear, plus an auxiliary anti-surge fuel tank among others.

Later S-series models like S203 and S204 were heavier due to not being based on Spec C chassis; thus S202 remains notable as first radical Type RA Spec C emphasizing weight reduction—a trait later shared only by Spec C Type RA-R variants. Recently regarded as collector’s items among enthusiasts due to rarity.

S203

File:Subaru IMPREZA S203 (GDBE) front.JPG

Subaru Impreza WRX STi S203

This limited-edition S-series Impreza drew heavily on parts from Subaru’s full STi catalog similar to its predecessor models but was distinguished by custom-made 18 inches (460 mm) BBS alloys shod with Pirelli tires.

S204

Released toward late 2005, the S204 built upon the WRX STi platform resembling its S203 predecessor but omitted roof spoilers and sported a distinct grille design compared to other Impreza variants. Powered by a two-liter (Subaru EJ engine#EJ20) horizontally opposed four-cylinder engine producing approximately 324 PS (239 kW; 320 bhp) paired with six-speed manual transmission—it achieved around 100 kilometres per hour (62 mph) at roughly 3,000 rpm in top gear and could reach speeds near 220 kilometres per hour (140 mph) close to redline (~6,600 rpm).

Its suspension setup was notably stiffened featuring enhanced torsional rigidity augmented by laterally mounted “performance dampers” co-branded by Yamaha and STI logos—resulting in excellent cornering capabilities. Aerodynamic aids included carbon fiber front lip spoilers plus rear diffusers combined with low-profile Pirelli P Zero (Corsa) tires designed primarily for paved road use.

Seating utilized extensive carbon fiber construction by Recaro, providing high side bolsters crucial during lateral maneuvers yet offering firmer support with minimal cushioning compared to other Impreza interiors—integral for performance driving dynamics.

Subaru advertised production at around 600 units globally with each vehicle bearing unique numbered plaques both underhood and near gear lever positions within cabin controls. However five examples destined for New Zealand enthusiasts lacked these individual badges found elsewhere (e.g., Singapore’s allocation of thirty units), raising questions about exact production totals.

WRX STI Spec C Type RA-R

Ordering commenced on October 30th, 2007 for this iteration based on the WRX STI Spec C platform featuring several upgrades: new Enkei-manufactured white painted wheels sized at , engine blueprinting yielding power outputs around 320 metric horsepower (240 kW; 320 hp), latest STI suspension components per catalog offerings plus six-piston Brembo front brakes equipped with slotted rotors that visually transition from silver to gold when heated during use.

The turbocharger drew inspiration from larger twin-scroll units found on S203/S204 models while “RA-R” nomenclature reportedly signifies “radical” according to STI engineers.

WRX STI A-Line

Mechanically identical to Japan-spec WRX STI variants but tailored toward more restrained tastes through removal of large rear spoilers alongside black Brembo brakes replacing colored counterparts plus titanium-hued Enkei wheels complemented by blacked-out STI front lips and leather upholstery targeting mature buyers.

Australia

Rev. A (2001)

The WRX is equipped with an EJ205 engine delivering 218 PS (160 kW; 215 hp) at 6,000 rpm. It rides on 17 in × 7 in (430 mm × 180 mm) wheels and features ventilated disc brakes with 4-piston calipers at the front and 2-piston calipers at the rear.

Rev. B (2002)

In response to feedback regarding slower acceleration compared to the GC-chassis WRX, the gear ratios and differential ratio were adjusted to match those of the Japanese domestic market WRX, enhancing overtaking capability and in-gear acceleration. This modification results in first and second gear ratios nearly identical to the GC model, while third through fifth gears are noticeably shorter.

Additionally, a Suretrac limited-slip rear differential was introduced. According to Japanese engineers, this system ensures power is transmitted to the wheel with traction even if the opposite wheel is airborne.

Rev. D (2004)

The WRX adopted the facelift designed by Peter Stevens, consistent with updates applied to other Impreza models. In 2005, a limited edition Subaru Impreza WRX WRP10 was released exclusively for Australia, restricted to 200 units. Australian models received an engine upgrade producing 168 kW (228 PS; 225 hp) and 300 N⋅m (221 lb⋅ft) of torque, achieved through an increased compression ratio of 9.0:1 and the implementation of variable valve timing on the intake camshafts.

The Subaru Impreza WRX WRP10 (2005) is a special edition unique to Australia, launched in late January 2005 with only 200 individually numbered cars produced. It offers improvements in wheels, tires, suspension, engine, and exhaust over the standard WRX. The name 'WRP10' signifies 'World Rally' ('WR'), Subaru's collaboration with Pirelli tires ('P'), and marks the 10th anniversary ('10') of this partnership. The inclusion of an STi carbon fiber engine bay strut brace alongside a WRX suspension lowering kit with STi springs reduces ride height by approximately 15 mm (0.6 in). These STi components enhance chassis rigidity, resulting in improved handling and a more aggressive appearance. The WRP10 features an STI-tuned replacement Electronic Control Unit which raises peak power from the standard WRX’s 168 kW (225 hp) at 6,000 rpm to 175 kW (235 hp) at the same rpm. Torque is increased by 2 N⋅m (1 lb⋅ft) to reach 302 N⋅m (223 lb⋅ft) at 4,000 rpm. Note that the STi ECU in the WRP10 is locked by STi and does not support flash tuning.

Europe

The Prodrive Performance Pack (PPP) serves as an official upgrade option for UK GD-chassis WRXs. Originating from the WR Sport pack fitted on some RB5 models, the 2007 iteration costs £1700 including VAT and installation. It boosts power output from 230 PS (169 kW; 227 hp) to 270 PS (199 kW; 266 hp), while torque increases to 420 N⋅m (310 lb⋅ft).

Rev. A (2001)

Powered by an EJ205 engine rated at 218 PS (160 kW; 215 hp) at 6,000 rpm, this WRX variant comes equipped with 17 in × 7 in (430 mm × 180 mm) wheels and features front brakes with 4-piston calipers and rear brakes with 2-piston calipers.

Rev. B (2002)

To address concerns over slower acceleration compared to GC-chassis WRXs, gear ratios were revised to align with those used in Japanese-spec WRXs, resulting in improved acceleration performance.

Rev. D (2004)

The WRX received the facelift designed by Peter Stevens similar to other Impreza models. Engine output was enhanced to deliver 225 PS (165 kW; 222 hp). Some cost-saving measures were implemented as well, including a downgrade of the stereo system.

Rev. F (2006)

In 2006, European WRXs were equipped with the EJ25 engine producing 230 PS (169 kW; 227 hp) at 5,600 rpm and generating torque of 32.6 kg·m (236 ft·lbf, 320 N·m) at 3,600 rpm. The vehicle’s weight was approximately 1,405 kg (3,097 lb), featuring a final drive ratio of 4.111:1. This version also received the updated facelift consistent with other markets.

North America

Applied A (2000)

The WRX made its debut in the year 2000.

Applied B (2001)

The initial Impreza WRX models arrived in North America featuring the EJ205 engine, delivering an output of 227 hp at 6,000 rpm and 217 lb-ft of torque at 4,000 rpm. Unlike the Japanese EJ205, the US version utilized a Mitsubishi TD04-13T turbocharger. Stock boost pressure peaked at 13.6 psi. The seating mirrored that of the standard Japanese-spec Impreza. Wheels were cast 16x6.5 inches, modeled after the J-spec WRX NB wheels, while braking consisted of 2-piston front and 1-piston rear calipers with ventilated front rotors. The 2002 WRX included brake duct plates directing airflow from the front bumper vents to the wheel wells. Gear ratios matched export standards, but the final drive ratio was set at 3.9:1. The rear limited-slip differential employed a viscous coupling type. Steering rack ratio measured 16.5:1. Models equipped with the 4-speed electronic automatic transmission (4EAT) featured a Variable Torque Distribution AWD system instead of a traditional viscous coupling center differential. This VTD system incorporated an electronically controlled hydraulic transfer clutch combined with a planetary gear center differential to maintain a default torque split of 45:55 between front and rear axles. Multiple sensors monitored driveshaft speeds, throttle position, and gear selection, enabling active torque distribution to optimize traction and handling. The vehicle's weight was approximately 3,085 pounds.

Applied C (2002–2003)

Changes from Applied B were minimal. Transmission gears were upgraded to RA-width gears, increasing size by 1 mm to enhance durability. A valve was introduced to prevent "drop-clutch" launches, aiming to reduce transmission failures due to aggressive AWD starts. The ignition ring illumination shifted to green lighting. Early 2002 models retained brake duct plates; however, these were discontinued by year-end 2002. Additionally, a shorter metal fuel pipe paired with a longer connector hose beneath the intake manifold was implemented to prevent fuel leaks under freezing conditions.

Applied D (2004)

File:2004-2005 Subaru Impreza WRX wagon -- 01-27-2012 front.jpg

2004–2005 Subaru Impreza WRX wagon (US)

The WRX underwent the Peter Stevens-designed facelift common to all Impreza models that year. Interior upgrades included adopting contoured seats matching those in the 2004 US-spec WRX STI. Multi-phase valve struts were added to enhance ride comfort without compromising handling capabilities. Instrumentation was rearranged: the tachometer moved to center position while the speedometer shifted to the right.

In 2004, Subaru of America announced availability of the WRX STi. Subaru Tecnica International's president expressed ambitions in Road & Track magazine to outperform the Mitsubishi Lancer Evolution in the US market. Consequently, each US-spec WRX STi iteration corresponded closely with its J-spec STi Spec C counterpart, sharing identical part numbers including glass and damper components. However, instead of utilizing the EJ207 engine, US models featured the first EJ257—a 2.5-liter variant of the EJ207—equipped with hypereutectic cast pistons.

Subaru USA indicated this latest STi piston design utilized cast aluminum with hypereutectic material properties providing approximately 120% greater strength compared to previous aluminum pistons. The steering rack adopted a ratio of 15.2:1 as found on standard STi models rather than the Spec C’s quicker 13:1 ratio.

Applied E (2005)

The WRX received interior updates along with body-colored rocker panels and black-painted headlamp bezels. Wheels previously exclusive to base US Legacy models were introduced alongside a single-port exhaust system. Certain WRX variants featured an STI hood scoop significantly larger than other WRX scoops. Suspension refinements enhanced handling efficiency over the prior model year, while cassette players were discontinued from stereo options.

2005 Subaru Impreza WRX STI (note the coloured rocker panels for the 2005 model year)

2005 Subaru Impreza WRX STI (note body-colored rocker panels)

Mirroring Japanese-spec C models, US-spec STis gained extended rear fender flares accommodating wider wheels—upgrading from 17x7.5 inches to 17x8 inches. Corresponding with increased wheel width, steering lock-to-lock turns decreased and wheel hub robustness improved. The bolt pattern changed from 5x100 mm to 5x114.3 mm. The front Suretrac LSD found in 2004 was replaced by a helical type unit; rear differentials retained clutch-type construction with torque split adjusted to 35/65 front/rear distribution. Interior enhancements included standard stereo systems and refreshed badging along with redesigned steering wheel, shift knob, HVAC controls, and center console.

Applied F (2006)

File:06-07 Subaru WRX.jpg

2006–2007 Subaru WRX sedan (US)

File:06-07 Subaru WRX wagon rear.jpg

2006–2007 Subaru WRX wagon (US)

In 2006, the Subaru Impreza WRX received a comprehensive front-end redesign featuring restyled headlights with smoke-tinted lenses, a three-section mesh grille, and distinctive new taillight assemblies. Three trim levels were offered: WRX TR (Tuner Ready), WRX, and Limited editions with curb weights ranging from approximately 3,140 lbs for TR up to around 3,240 lbs for Limited.

A significant update was introduction of the turbocharged intercooled EJ255 engine displacing 2.5 liters and generating 230 hp at 5,600 rpm—replacing the longstanding EJ205 2.0-liter engine used since model inception. Peak torque increased to 235 lb-ft at 3,600 rpm compared to previous figures of 217 lb-ft at higher RPMs, enhancing performance across all speed ranges with emphasis on low-to-mid range torque delivery. This engine shared core architecture and technology with the STI’s powerplant including AVCS variable valve timing and electronic throttle control systems. The turbocharger remained consistent with prior US-spec units but achieved peak boost pressure of 14.8 psi.

Transmission improvements included dual-ring synchros in first gear for smoother downshifts from second gear reducing notchiness.

Chassis revisions encompassed aluminum front lower A-arms on sedan variants reducing unsprung mass; rear suspension had already gained aluminum lateral links in previous year’s update. Steering rack ratio changed from previous figures to a quicker 15:1 for enhanced feedback and response.

All WRX trims adopted new seven-spoke aluminum-alloy wheels sized at 17x7 inches replacing former five-spoke sixteen-inch wheels paired with tires sized at 215/45ZR17 instead of previous 205/55R16 sizes.

Braking systems saw upgrades with larger vented front discs measuring approximately 11.5 inches coupled with four-piston calipers replacing older two-piston units; rear brakes upgraded from solid discs to ventilated discs sized about 11.3 inches along with two-piston calipers supplanting single-piston types—the calipers painted red featuring white SUBARU lettering.

US-spec STIs mirrored Japanese-spec facelift changes mechanically including updated DCCD (Driver Controlled Center Differential) systems and revised engine mounts switched from metal to liquid-filled plastic units designed for cabin vibration reduction; warranty replacements reverted mounts back to earlier rubber-metal types if failures occurred—later production vehicles shipped factory-fitted with these older mounts.

Center differential improvements incorporated mechanical limited-slip functionality supplementing electromagnetic DCCD control; torque distribution adjusted to a split of roughly 41/59 front-to-rear respectively; transmission oil pump was removed entirely in this model year.

The STI’s weight approximated around 3,350 pounds.

Notably, a WRX model from this year was prominently featured during the opening sequence of the film Baby Driver released in 2017.

Applied G (2007)

Ikuo Mori succeeded Kyoji Takenaka as president and CEO of Fuji Heavy Industries during this period.

To reduce manufacturing costs, aluminum suspension components on the WRX reverted back to steel-cast parts for this model year while both WRX and Limited trims gained auxiliary audio ports adjacent to cigarette lighters along with MP3 CD playback capability.

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2007 US-spec Subaru Impreza WRX STi Limited—limited production run of only 800 units

Several notable modifications affected US-spec STI models in 2007 due to cost-saving measures which eliminated use of J-spec Spec C control arms in favor of aluminum control arms similar to Japan-spec revision A and B non-Spec C STIs.

Caster angle reduction resulted in a slight decrease in wheelbase length from approximately 100 inches down to about 99.4 inches.

Rear sway bar diameter decreased marginally from twenty millimeters down to nineteen millimeters.

Gear ratios for second through fourth gears became taller (longer ratios), improving fuel efficiency and drivability but slightly compromising quarter-mile drag times as it allowed reaching speeds near 114 mph in fourth gear without shifting into fifth gear.

The previously removed transmission oil pump returned for this model year’s transmission assembly.

Cylinder heads on EJ257 engines underwent redesigns enhancing cooling efficiency while sodium-filled exhaust valves were eliminated; piston designs remained unchanged from prior years.

Alternator capacity increased from ninety amps up to one hundred ten amps.

Rear limited-slip differential switched from clutch-type units to Torsen differentials considered an upgrade providing improved performance characteristics.

Turbochargers transitioned from VF39 units to VF43 variants featuring differing wastegate actuators.

Side cowl braces stiffened compared to previous model year versions.

Engine mounts reverted once again back to hard rubber types used before changes made in 2006.

Interior revisions included replacement of ashtray with audio jack input along with addition of rear center armrest featuring trunk pass-through capability; audio system output rated at one hundred twenty watts.

The STI’s ECU was comprehensively reprogrammed addressing compliance with US LEV2 emissions standards which introduced throttle response and timing challenges; additionally secondary air pumps were installed aiding emission control compliance while injector design shifted from side-feed injectors used previously to top-feed injectors.

WRX STI Limited trim debuted offering fog lamps, leather upholstery, lip-style trunk spoiler plus optional moonroof—closely resembling Japan-spec A-line versions mechanically yet retaining US-spec characteristics consistent with the model year’s features.

United Kingdom

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2005 Subaru Impreza WRX (Europe)

WRX UK300 (2001)

To commemorate Subaru's rally achievements in the UK during preceding years, 300 units of the UK300 edition were manufactured. This model includes 18 in (46 cm) gold OZ wheels by Prodrive, Pirelli Rosso P Zero tires, interior options in blue Alcantara or blue leather, as well as UK300-branded floor mats, headlights, front and rear spoilers, and decals unique to this edition.

WR1 (2004)

Celebrating the 2003 WRC drivers' championship victory, a limited run of 1,000 Japanese MY04 WRX STI models equipped with DCCD was exported. Half of these were marketed in Europe, Australia, and South Africa as the Petter Solberg edition; the remaining 500 were further enhanced by Prodrive and sold in the UK under the WR1 name. These vehicles deliver 320 bhp (239 kW) and 309.8 ft⋅lbf (420.0 N⋅m), accelerate from 0 to 60 mph (97 km/h) in 4.25 seconds, and have an electronically limited top speed of 155 mph (249 km/h). Features include Prodrive WRX STI springs, Pirelli PZero Nero tires, mesh grilles, exclusive Ice Blue metallic paintwork, and Prodrive PFF7 Pewter wheels. Due to non-EU homologation of the upgraded ECU and exhaust system, these components were installed post-registration.

WRX 300 (2005)

Exclusively for the UK market, 300 units were released featuring Blue Mica exterior paint, 17-inch gold alloy wheels fitted with 215/45 tires, Subaru World Rally Team branded front bucket seats, a five-speed manual gearbox, and the standard Prodrive Performance Package (PPP). This package boosts output to 265 PS (195 kW; 261 hp) with torque reaching 348 N⋅m (257 lb⋅ft), enabling a 0–60 mph (97 km/h) sprint in 4.8 seconds and a maximum speed of 151 mph (243 km/h). The purchase price included a free 12-month subscription to RAC Trackstar at £21,495.00 (approximately $31,800), which represented excellent value compared to the £21,900 cost of a standard Prodrive Performance Pack equipped Impreza WRX. Optional upgrades comprised an 18-inch P-FF7 wheel and tire set, a front brake upgrade by Prodrive, sports suspension enhancements, and a special edition rear spoiler.

RB320 (2006)

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Subaru Impreza RB320

In tribute to the late Richard Burns—who passed away from cancer in 2005 after winning the 2001 WRC Drivers Championship for Subaru World Rally Team—Subaru UK launched the limited RB320 edition in 2006.

This model was exclusively available in Obsidian Black and came with custom 18 in (46 cm) alloy wheels along with specially engineered Prodrive suspension featuring Bilstein dampers. The suspension setup included sport springs with an updated rear anti-roll bar and lowered ride height by approximately 30 mm (1.2 in) at the front and 10 mm (0.4 in) at the rear.

Standard equipment also encompassed a chrome mesh front grille, front lip spoiler, quick-shift gear lever, side sill plates, RB320-branded gear knob and carpet mats, plus exclusive exterior badges. Each owner received a uniquely numbered black alloy tax disc holder.

The Prodrive Performance Pack enhances power output to 320 PS (235 kW; 316 hp) at 6,000 rpm and torque to 332 lb⋅ft (450 N⋅m) at 3,700 rpm. These improvements reduce acceleration times to 4.8 seconds from 0–60 mph (97 km/h) and 12.2 seconds from 0–100 mph (161 km/h).

Spec D (2006)

Designed for buyers seeking a more understated appearance, this 'discreet' STI variant closely resembles the Japanese A-Line specification but features a standard WRX boot spoiler instead of a large wing, silver wheels rather than gold ones, and lacks a rear roof vane. Standard features include projector-style fog lights, Smartnav touchscreen system, vehicle tracking technology, and a safe speed control system. The audio setup consists of a 200W Pioneer DEH-P70BT head unit with iPod connectivity and Bluetooth phone integration. Inside, leather upholstery covers seats and door panels complemented by automatic climate control and enhanced sound insulation. Limited to just 300 units finished solely in Crystal Grey Metallic—making it rarer than the RB320—it delivers 276 bhp (206 kW), accelerates from 0–60 mph (97 km/h) in five seconds flat, and has an electronically limited top speed of 155 mph (249 km/h). The initial retail price was £28,450.

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The UK version of the WRX STI

GB270 (2007)

Only 400 examples were produced: 300 four-door saloons painted WR Blue Mica and 100 five-door hatchbacks finished in Urban Grey Metallic. The GB270 name references its turbocharged 2.5-liter engine delivering 270 PS (199 kW; 266 hp) alongside 420 N⋅m (310 lb⋅ft) of torque. These enhancements yield a sprint from zero to 60 mph in 4.9 seconds with a top speed reaching 146 mph (235 km/h). The slightly reduced maximum speed compared to other Imprezas is due to its Prodrive Quickshift five-speed transmission that provides quicker gear changes than the standard six-speed box.

Prodrive also upgraded suspension components by lowering ride height by approximately 30 mm (1 in) at the front and 10 at the rear.

Additional features include a Prodrive anti-roll bar, polished stainless-steel mesh grille by Prodrive, and exclusive 18 inches (46 cm) alloy wheels finished in silver for four-door models or black for five-door variants. The on-the-road price was £22,995.

RB320 (2007)

Following on from the RB5 legacy, Subaru released another limited series of 320 MY2007 STI vehicles painted Obsidian Black Pearl as a tribute to Richard Burns—the 2001 WRC World Champion who died from a brain tumor in 2005. Thanks to Prodrive tuning efforts, this version produces 320 PS (235 kW; 316 hp) with torque rated at 450 N⋅m (332 lb⋅ft).

Suspension upgrades comprise Eibach springs paired with an Eibach rear stabilizer bar alongside Bilstein struts. The car rides on anthracite-colored 18 in (46 cm) alloy wheels.

An optional £1500 interior package offered black leather/Alcantara upholstery featuring RB320 embroidered stitching on seats plus an updated gear knob. The car also includes distinctive silver mesh grilles as part of its unique styling cues.

Saab 9-2X

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Saab 9-2X Aero

The Saab 9-2X (stylized as 9^2X) was a badge-engineered variant of Subaru’s second-generation Impreza hatchback, produced specifically for the North American market during the 2005 and 2006 model years. At that time, Saab Automobile operated as a wholly owned subsidiary of General Motors (GM), which also held a 20 percent stake in Fuji Heavy Industries, Subaru’s parent company. This collaboration led to the creation of the 9-2X, colloquially known as the "Saabaru," a blend of the names "Saab" and "Subaru".

To align with Saab’s brand identity, the vehicle’s front and rear exteriors were restyled. These modifications encompassed changes to the front fascia, fenders, hood, tailgate, and rear bumper. Inside, additional soundproofing was applied beyond what was present in the Subaru model, focusing on areas such as the firewall, carpeting, roof lining, and rear window seals. The cabin largely mirrored that of the Impreza wagon. Saab introduced a distinctive two-tone seat design inspired by the second-generation Impreza wagon and incorporated its instrument cluster. Notably, 2005 marked Saab’s inaugural offering of all-wheel drive, which came standard on both the 9-2X and the Saab 9-7X.

Distinctive to Saab were front seats equipped with active head restraints, differing from the fixed headrests found in the comparable Impreza WRX. The rear suspension utilized aluminum control arms to reduce unsprung mass further enhanced by plastic components replacing heavier parts, unique bushings tailored for Saab, and recalibrated shock absorbers. The Aero model featured a more precise and responsive steering system by adopting the faster-ratio (15.5:1) steering rack from the 2006–2007 Impreza WRX along with more rigid steering mounts and stiffer chassis bushings.

Despite these enhancements, the 9-2X did not resonate strongly with dedicated Saab enthusiasts due to its primarily superficial alterations relative to its Subaru counterpart. Nevertheless, it achieved top safety ratings from IIHS.

In October 2005, GM opted to sell an 8.4 percent stake in Fuji Heavy Industries to Toyota and repurchased its remaining 11.4 percent share from Fuji in a share buyback arrangement. Following this strategic shift and the termination of GM’s partnership with Fuji, production of the 9-2X ceased after the 2006 model year.

Throughout its production span, a total of 10,346 units were assembled—8,514 in 2005 and 1,832 in 2006. For its debut year, Saab offered two trims: the "Linear," equipped with Subaru’s naturally aspirated 2.5-liter EJ253 engine delivering 165 hp (123 kW) power and 166 lb⋅ft (225 N⋅m), and the "Aero," featuring a turbocharged 2.0-liter engine shared with the Impreza WRX producing 227 hp (169 kW) and 217 lb⋅ft (294 N⋅m) torque. Both trims came standard with all-wheel drive; transmission options included a five-speed manual or an optional four-speed automatic.

For the 2005 model year, three option packages were available. The Premium package added leather seating surfaces along with xenon HID headlights for U.S. models; when paired with the Linear trim, it also included an in-dash six-CD changer, front fog lamps, vinyl door panels, plus leather-wrapped steering wheel and shift knob. The Cold Weather package featured heated front seats, mirror defoggers, and wiper defrosters at both front and rear wiper parking zones; Canadian models additionally received an engine block heater. The Sport package incorporated a sunroof and—exclusive to the Aero—17-inch wheels.

2006 model year

In 2006, the "Linear" trim was renamed "2.5i" with an upgraded naturally aspirated 2.5-liter engine outputting 173 hp (129 kW) and 166 lb⋅ft (225 N⋅m) torque. The Aero replaced its previous turbocharged 2.0-liter unit with a larger-displacement EJ255 turbocharged engine rated at 230 hp (172 kW) and 235 lb⋅ft (319 N⋅m) torque. Option packages were restructured: the former Premium package became known as the Leather package retaining prior features; the Cold Weather package remained unchanged; while the Sport package—offering upgraded 17-inch wheels—was limited to Aero models only as the sunroof became an individual option.