2010 Subaru Impreza (2.5i, 2.5GT, WRX and WRX STI Special Edition) - Pictures, Features, Specs

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The 2010 Subaru Impreza line, which features Symmetrical All-Wheel Drive as standard, gains more of the premium amenities that more of today’s compact car customers are seeking.

Photo: 2010 Subaru Impreza 2.5iPhoto: 2010 Subaru Impreza 2.5iView more 2010 Subaru Impreza 2.5i, 2.5GT & Outback Sport pictures in our 2010 Subaru Impreza 2.5i, 2.5GT & Outback Sport photo gallery

A new Special Edition Package for the Impreza Premium trim line equips the 4-Door sedan or 5-Door model with a power moonroof, fog lights and the All-Weather Package featuring heated front seats, heated exterior mirrors and windshield wiper de-icer.

Photo: 2010 Subaru Impreza 2.5GTPhoto: 2010 Subaru Impreza 2.5GTView more 2010 Subaru Impreza WRX, WRX & WRX STI Special Edition pictures in our 2010 Subaru Impreza WRX, WRX & WRX STI Special Edition photo gallery

The 2010 Impreza line includes the 2.5i, Outback Sport and 2.5GT. The 2.5i is powered by a naturally aspirated, 170-hp 4-cylinder Boxer engine and available in 4-Door sedan and 5-Door models. New for 2010, the Premium trim line replaces the previous Premium Package, and the Special Edition Package adds the aforementioned vehicle upgrades to the Premium trim line. The available navigation system in the 2.5i Premium now includes Bluetooth hands-free phoning capability, with a microphone located in the overhead console. All Impreza models feature a new grille for 2010.

Photo: 2010 Subaru Impreza Outback SportPhoto: 2010 Subaru Impreza Outback Sport

The 5-door Outback Sport gets its outdoor spirit from the larger Outback model and shares the Impreza 2.5i powertrain. The Outback Sport also features distinctive exterior trim and chassis and interior enhancements. The fully equipped Impreza 2.5GT, also available in 4-Door and 5-Door styles, is powered by a 224-hp turbocharged/intercooled 2.5-liter Boxer engine and equipped exclusively with an electronically controlled automatic transmission with SPORTSHIFT™ for manual control.

The Subaru Impreza remains the only car in its segment to come standard with All-Wheel Drive – renowned Subaru Symmetrical All-Wheel Drive combined with standard Vehicle Dynamics Control (VDC). The Impreza has achieved the “Top Safety Pick” rating from the Insurance Institute for Highway Safety (IIHS) for garnering the highest rating (“Good”) in frontal offset, side and rear impact tests.

Like every Subaru model for 2010, the Impreza line is equipped as standard with 4-wheel disc ABS brakes with Brake Assist and Electronic Brake-force Distribution (EBD). The Incline Start Assist feature, which can prevent the vehicle from rolling backward when being driven away from a stop on an incline, is standard with the 5-speed manual transmission on all models.

Photo: 2010 Subaru Impreza 2.5iPhoto: 2010 Subaru Impreza 2.5i

The 2.5-liter normally aspirated 4-cylinder Boxer engine in the Impreza 2.5i and Outback Sport delivers 170 horsepower @ 6,000 rpm and 170 lb-ft. of torque @ 4,400 rpm, still among the highest ratings in the segment.

The Impreza 2.5i Premium delivers on its “premium” promise with aluminum-alloy 16-inch, 12-spoke wheels and additional interior amenities. Comfort touches include a black leather-wrapped steering wheel with audio and cruise control buttons and a black leather-wrapped shifter handle. The AM/FM stereo includes a 6-disc in-dash CD changer featuring MP3/WMA audio file capability. The 10-speaker audio system integrates the SRS Circle Surround system.

Impreza 2.5GT Combines Performance, Agility and Everyday Comfort
Powered by a 224-horsepower turbocharged / intercooled Boxer engine teamed to a standard 4-speed electronically controlled automatic transmission with SPORTSHIFT, the 2010 Impreza 2.5GT delivers powerful performance. The turbo engine produces 226 lb.-ft. of peak torque at a low 2,800 rpm for quick acceleration, as well as outstanding response in all types of driving. Sport-tuned suspension with a rear stabilizer bar and standard 17-inch alloy wheels ensure both agile handling and compliant everyday ride quality. The Impreza 2.5GT in addition is equipped with larger front brakes than the 2.5i and Outback Sport models.

The 2.5GT combines the Impreza 2.5i Premium and Special Edition standard equipment. In addition, its electroluminescent instrument panel gauges were inspired by those in the high-performance Impreza WRX® and WRX STI® models.

Photo: 2010 Subaru Impreza 2.5iPhoto: 2010 Subaru Impreza 2.5i

Outback Sport: A Sporty Crossover
The original Impreza Outback Sport was instrumental in ushering in the crossover-utility category in 1994, combining renowned Subaru All-Wheel Drive performance with passenger car comfort and economy. Based on the Impreza 5-Door model, the Outback Sport combines sporty exterior design with a comprehensive equipment upgrade over the 2.5i 5-Door model. Outback Sport styling is highlighted by its exclusive two-tone appearance, front and rear bumper underguards, standard projector-beam halogen fog lights, side moldings and silver painted exterior door handles. Outback Sport augments the Impreza 2.5i 5-Door model’s utility features with a 12-volt cargo area power outlet and roof carrier base.

Raised heavy-duty suspension and 17 x 7-inch aluminum alloy wheels with 205/50 R17 all-season tires form the Outback Sport’s foundation of outstanding all-climate driving performance. Incline Start Assist is standard with the 5-speed manual transmission, and, like all Impreza models, the Outback Sport features the standard Vehicle Dynamics Control (VDC) stability and traction control system.

Outback Sport is equipped for cold climates with the standard All-Weather Package (dual-mode heated front seats, heated exterior mirrors, and a windshield wiper de-icer). The standard AM/FM stereo includes a 6-disc in-dash CD changer with MP3/WMA audio file capability. An auxiliary audio input jack enables connection of an iPod® or MP3 player, and the 10-speaker audio system integrates the SRS Circle Surround system. Additional upscale comfort touches include a black leather-wrapped steering wheel with audio and cruise control buttons and a black leather-wrapped shifter handle.

Photo: 2010 Subaru Impreza 2.5iPhoto: 2010 Subaru Impreza 2.5i

Advanced Chassis Engineering
A 103.1-inch wheelbase, combined with Subaru’s renowned mastery of intelligent vehicle packaging, contributes to the Impreza’s smooth ride character, interior space and utility. High-tensile-strength steel is used at key structural points. Subaru optimized all elements of the Impreza’s chassis to deliver a better balance of ride, handling response, quietness and overall traction performance than offered by competitive vehicles. Compared to the previous-generation Impreza, the engine is placed slightly lower in the chassis, which helps to lower the center of gravity for better agility. In addition, the new-generation Impreza chassis improves crash-worthiness and provides a stronger platform for crisper handling. All Impreza models share the quicker steering from the WRX performance model yielding 2.8 turns lock-to-lock and a tight 34.8-ft. turning circle.

The double-wishbone rear suspension design provides improved ride refinement and decreased road noise for a quieter cabin. At the same time, its compact layout results in less intrusion into the cargo area, providing a generously sized luggage compartment. On 5-Door Impreza models, the wide and flat load floor can accommodate two Tour-size golf bags with the rear seats in the upright position. In the Impreza sedan, which is 6.5-inches longer than the 5-Door model, the extra space provides for a large, deep trunk that can accommodate three Tour-size golf bags. In all Impreza and Outback Sport models, a 60/40-split folding rear seat further boosts cargo capacity and convenience.

Sporty Exterior Design
The Impreza 5-Door features a distinctive character line that sweeps upward at the rear. The short rear overhang and clear rear tail lamp lenses combine to integrate the side character line into the tail. The 4-Door, which is unique to the North American market, is distinguished by a wide, sharp front design giving way to a crisp side body crease. The rear of the 4-Door is set apart from the 5-Door model by red tail lamp lenses and a chrome strip below the trunk line that visually widens the tail. The 4-Door uses dual tailpipe outlets (one per side), and the 5-Door features a single, larger tailpipe outlet.

Comfort And Convenience
The Impreza emphasizes interior comfort and spaciousness, with high-quality materials that include double-stitched fabrics and high-grade plastics. Large door openings and rear doors that open to 75 degrees provide easy ingress and egress. Flexmats springs by Pullmaflex enhance seating comfort. The sweeping twin cockpit design embraces occupants and brushed aluminum-look insets flow into the center stack. The center console shape adds to the airiness of the interior, aided by the sculpted door panels and generous headroom. A molded recess in each door panel can accommodate a 24-oz. soft drink bottle, as well as loose items.

The headlights-off with ignition switch is a traditional Subaru convenience that can preserve battery life. Models with the optional automatic transmission are pre-wired for a dealer-installed remote-starting system. Dual gas strut hood supports are used instead of the prop-rod seen on other compact models, an unexpected convenience in this segment.

Photo: 2010 Subaru Impreza 2.5iPhoto: 2010 Subaru Impreza 2.5i

Navigation System With Advanced Audio
The Impreza 2.5i Premium with automatic-transmission is available with an optional navigation system that adds Bluetooth hands-free calling capability for 2010. The microphone is located in the overhead console.
The navigation system also includes Audyssey MultEQ audio enhancement. The Impreza debuted the first mobile application of this technology, which is also used in high-end home theater systems. Audyssey MultEQ creates the optimal sound experience for passengers in each seat position by tuning equalization that corrects for time and frequency response.

In addition to an input for MP3 players, the center console with navigation system also includes video jacks that can accommodate portable gaming devices. These can be displayed on the navigation screen when the vehicle is parked. The navigation screen is placed at the top of the dashboard for improved visibility and ease of use.

The Impreza models come pre-wired for XM® or SIRIUS® Satellite Radio. (The optional navigation system includes factory-installed SIRIUS with a roof-mounted antenna.) The standard and optional audio systems feature the Radio Broadcast Data System, which can display a variety of data, including a song’s title and artist.

Proven Subaru Safety Technology
The new-generation Impreza is built around the Ring-Shaped Reinforcement Frame body structure, proven over a decade in all Subaru models. The Impreza incorporates 3-point seatbelts for all seats (height-adjustable for outboard positions), active front seat head restraints and front seatbelts with electrically triggered pre-tensioners and force limiters.

Like all current Subaru models, the 2010 Impreza models are equipped with standard side-curtain airbags. The Subaru Advanced Frontal Airbag System (SRS) features front seat side impact air bags. In the passenger side front seat, a sensor module detects weight – first determining if it is occupied, and if so by a child or adult – to control air bag deployment. As part of the system, the dashboard features an “Airbag” indicator light.

Two Types of Symmetrical All-Wheel Drive
Standard Symmetrical All-Wheel Drive forms the common core technology on all Subaru models. With more brands adding All-Wheel Drive, it is worth noting that Subaru introduced 4-wheel drive passenger cars more than 30 years ago and then automatic full-time All-Wheel Drive in 1987. In 1997, Subaru became the first brand in the U.S. to make All-Wheel Drive standard on all its models.

Photo: 2010 Subaru Impreza 2.5iPhoto: 2010 Subaru Impreza 2.5i

Subaru Symmetrical All-Wheel Drive is a complete system comprised of the Boxer engine and the full-time power distribution system that varies by model and transmission. The aluminum Boxer engine and simple, symmetrical drivetrain layout help to lower the center of gravity, which in turn contributes to handling agility.

The Impreza 2.5i and Outback Sport models feature two versions of Symmetrical All-Wheel Drive, both of which power all four wheels all the time and can transfer more power to the wheels with the best grip. Models equipped with the 5-speed manual transmission utilize a viscous-coupling locking center differential that distributes power 50:50, transferring more power to the wheels with the best traction should slippage occur.

In all Impreza models with the automatic transmission, the Active Torque Split version of Symmetrical All-Wheel Drive uses an electronically managed continuously variable transfer clutch to actively manage power distribution based on acceleration, deceleration, and available traction. This system automatically transfers more power to the wheels with the best grip should slippage occur. Control logic enhances stability by monitoring individual wheel speeds and reacting more quickly to wheel slippage. All versions of Subaru Symmetrical All-Wheel Drive integrate the Vehicle Dynamics Control (VDC) system to further enhance all-weather stability and traction.

2010 Subaru Impreza WRX

After significantly boosting performance and handling in its iconic All-Wheel Drive Impreza WRX model for 2009, Subaru has made a model line change and added minor enhancements for 2010. A new Premium trim line replaces the previous Premium Package option. Also for 2010, the available navigation system now includes Bluetooth® wireless capability, with a microphone in overhead console, and the standard Aero Package gains a new side sill design.

Photo: 2010 Subaru Impreza WRXPhoto: 2010 Subaru Impreza WRX

The Impreza Premium model features the amenities more sport compact drivers are seeking, including a power moonroof, fog lights and the All-Weather Package featuring heated front seats, heated exterior mirrors and windshield wiper de-icer.

Like all Subaru models, the WRX is equipped as standard with renowned Subaru Symmetrical All-Wheel Drive, combined with standard Vehicle Dynamics Control (VDC). Powered by a 265-hp turbocharged/intercooled Boxer engine, the 2010 Impreza WRX is exclusively equipped with a 5-speed manual transmission. For customers seeking turbocharged performance with an automatic transmission, Subaru offers the Impreza 2.5GT, which is powered by a 224-hp turbocharged/intercooled Boxer engine.

Photo: 2010 Subaru Impreza WRXPhoto: 2010 Subaru Impreza WRX

The 2010 Impreza WRX carries over the high-performance tuning that was introduced for the 2009 model. The turbo provides 14.2 PSI of maximum boost, compared to 11.4 PSI in the Impreza 2.5GT model. Also compared to the 2.5GT, the WRX uses a larger-diameter exhaust uses with low-density catalyst for reduced backpressure. The WRX engine produces 265 horsepower at 6,000 rpm and 244 lb.-ft. of peak torque at 4,000 rpm – compared to 224 horsepower and 226 lb.-ft. in the Impreza 2.5GT. Fuel economy for the 2010 WRX is an EPA-estimated 18 mpg city / 25 mpg highway.

The Impreza WRX had debuted an all-new platform for the 2008 model year, featuring a longer 103.1-inch wheelbase and an all-new double-wishbone rear suspension system. Suspension is more performance-tuned for the WRX than the 2.5GT. The WRX’s standard 17 x 7-inch aluminum alloy wheels wear 225/45R17 summer performance tires, compared with 205/50R17 all-season tires used on the Impreza 2.5GT.

Special Performance-Tuned Chassis
Subaru significantly re-tuned the WRX chassis in the 2009 model-year upgrade, resulting in sharper turn-in and more responsive handling. Front upper strut mounts are adopted from the STI. The previous WRX suspension tuning was then used for the 2.5GT. Compared to the 2.5GT, the WRX front spring rate is 43-percent stiffer, and the rear spring rate is 42-percent stiffer. Each models features specific damper tuning, as well. The WRX uses thicker stabilizer bars than the 2.5GT: 21 mm vs. 20 mm in front and 16 mm vs. 15 mm in the rear. A damper valve in the WRX steering gearbox ensures a smooth and high quality steering feel.

Placing the engine slightly lower in the chassis than in the previous-generation Impreza models helped lower the center of gravity in the new-generation Impreza platform, enhancing steering response. With the Subaru Dynamic Chassis Control Concept (DC3), Subaru optimized all elements of the Impreza’s chassis to deliver a better balance of handling response, ride quality, quietness and overall traction performance than offered by competitive vehicles.

Photo: 2010 Subaru Impreza WRXPhoto: 2010 Subaru Impreza WRX

WRX Aero Body Styling
On WRX Sedan and 5-Door models, an STI-type grille carries the WRX badge. Both the 5-Door and 4-Door models are equipped with a standard Aero Package, featuring front and rear under-bumper spoilers and aerodynamic side ground effects. The sedan has a low-profile rear trunk spoiler, while the 5-Door adopts the Impreza WRX STI rear liftgate spoiler and a rear diffuser.

The 5-Door has clear tail lamp lenses vs. red lenses for the sedan, and the garnish panel between the light clusters is body color on the 5-Door and chrome on the sedan. The sedan features dual tailpipe outlets, while the 5-Door uses a single, larger outlet (stainless steel on WRX Premium).

Rally-Inspired Interior
The new-generation WRX interior introduced new comfort and spaciousness, making it an outstanding everyday performance car. WRX-exclusive carbon black checkered upholstery accented by red stitching sets the tone for the sporty interior.

The standard tilt and telescoping leather-wrapped steering wheel is accented by red stitching, and the standard aluminum-alloy pedal covers include the driver’s footrest. Performance-design front seats integrate the backrest and head restraint into a single structure. The instrument panel features electroluminescent gauges with indicator needles that sweep the gauge faces upon engine startup.

The compact layout of the double-wishbone rear suspension helps to minimize intrusion into the cargo area, providing a wider and deeper luggage compartment. On the 5-Door WRX, the wide and flat load floor can accommodate two Tour-size golf bags with the rear seat backs in the upright position. In the WRX sedan, which is 6.5-inches longer than the 5-Door, the extra space provides for a larger, deeper trunk that can accommodate three Tour-size golf bags. In all WRX models, a 60/40-split folding rear seat further boosts cargo capacity and convenience, and the 4-Door also features a rear seat fold-down center armrest.

Symmetrical All-Wheel Drive is Standard
Standard Symmetrical All-Wheel Drive, which forms the common core technology on all Subaru models, gives the Impreza WRX a significant handling-performance advantage over front-wheel drive competitors. Symmetrical All-Wheel Drive is a complete system comprised of the Boxer engine and the full-time power distribution system (which varies by model and transmission). The aluminum Boxer engine and simple, symmetrical drivetrain layout help to lower the car’s center of gravity, which in turn contributes to its sporty handling characteristics.

The 2009 Impreza WRX employs the Continuous AWD version of Symmetrical All-Wheel Drive. This system uses a viscous coupling locking center differential that distributes torque 50:50. Should slippage occur, this system transfers more power to the wheels with the best traction.

The Vehicle Dynamics Control (VDC) stability and traction control system is standard on all Subaru models for 2010. It is important to note that, in Subaru vehicles, traction control plays a second line of defense against wheel slip after AWD torque distribution. In contrast, some All-Wheel Drive systems on the market lack the performance advantage of a locking center differential and rely solely on traction control to redistribute torque away from slipping wheels.

Easy-To-Use Infotainment Technology
The available navigation system (WRX Premium only) and information center in Impreza WRX is the focal point of the center console. The navigation screen is located at the top of the dashboard for improved visibility and ease of use. With the navigation system, the center console provides an input for MP3 players as well as RCA-type video jacks that can accommodate portable gaming devices. These can be displayed on the navigation screen when the vehicle is parked.

The standard WRX audio system features an AM/FM stereo with single-disc CD player and four speakers. Impreza models come pre-wired for XM® or SIRIUS® Satellite Radio. Both the standard and optional Impreza audio systems feature the Radio Broadcast Data System (RBDS) that can display a variety of information, including a song’s title and artist.

The 2010 WRX Premium adds an AM/FM stereo with 6-disc in-dash CD changer featuring MP3/WMA file capability. Occupants enjoy powerful sound from 10 upgraded speakers (six in the front doors, four in the rear doors) and SRS® Circle Surround Sound. The steering wheel in the WRX Premium adds audio system switches. An auxiliary audio input jack enables connection of an iPod® or MP3 player.

The optional Navigation Package for the WRX Premium integrates the Audyssey MultEQ audio enhancement and, new for 2010, Bluetooth hands-free calling. Used in high-end home theater systems, Audyssey MultEQ creates the optimal sound experience for passengers in each seat position by tuning equalization that corrects for time and frequency response. The navigation system itself presents major functions through an intuitive, easy-to-use touch screen interface.

Proven Safety Technology
The new-generation Impreza models are built around the Ring-Shaped Reinforcement Frame body structure with front and rear crumple zones, proven in Subaru models over a decade to provide outstanding crash protection.

All Impreza models for 2010 feature a 4-wheel disc Anti-lock Brake System (ABS) with Electronic Brake-force Distribution (EBD) and Brake Assist. The WRX and 2.5GT models have larger front brakes than other Impreza models.

Electronic Brake-force Distribution (EBD) provides precise control of braking pressure between the front and rear wheels based on the vehicle load to improve stability and stopping distances. Brake Assist analyzes the force and stroke on the brake pedal and increases hydraulic boost to provide enhanced emergency braking, also activating the ABS system early if needed.

All seats provide 3-point seatbelts (height-adjustable for outboard positions), and the front seatbelts have electrically triggered pre-tensioners and force limiters. Side-curtain airbags are standard on all 2010 Subaru models.

The Subaru Advanced Frontal Airbag System (SRS) features front seat side impact airbags and a driver’s side front airbag that deploys according to the driver’s proximity to the steering wheel, as measured by a sensor on the seat track. In the passenger side front seat, a sensor module detects weight – first determining if the seat is occupied, and if so by a child or adult – to control airbag deployment. As part of the system, the dashboard features an “Airbag” indicator light.

2010 Subaru Impreza WRX STI

Subaru of America, Inc. has enhanced interior trim and user technology for its
its iconic Impreza WRX STI performance flagship for 2010. The ultimate-performance Subaru is powered by a 305-horsepower turbocharged/intercooled Boxer engine and features driver-selectable powertrain and dynamic handling controls for world-class sports car performance. The WRX STI is built exclusively as an aggressively styled, wide-fender 5-door model with a design strongly influenced by the brand’s competition heritage.

Photo: 2010 Subaru Impreza WRX STI Special EditionPhoto: 2010 Subaru Impreza WRX STI Special Edition

For the 2010 WRX STI, black Alcantara upholstery with red stitching replaces gray Alcantara upholstery with silver stitching. The available Navigation Package now integrates Bluetooth wireless hands-free calling (for Bluetooth-equipped cell phones).

The Impreza WRX STI is far more than a modified version of the standard WRX. The two vehicles share a basic architecture, some interior trim and glass, but little more. Nearly every major mechanical system in the WRX STI is unique to this model: body panels, engine, transmission, Driver Controlled Center Differential (DCCD) All-Wheel Drive system, specially tuned suspension, brakes, wheels, tires, plus exclusive interior appointments.

Photo: 2010 Subaru Impreza WRX STI Special EditionPhoto: 2010 Subaru Impreza WRX STI Special Edition

305-hp Turbo Boxer Engine
The WRX STI is powered by a 2.5-liter turbocharged/intercooled 4-cylinder Boxer engine, with Dual Active Valve Control System (Dual AVCS). The engine, which is exclusive to the STI model, produces 305 horsepower (SAE) at 6,000 rpm and 290 lb.-ft. of peak torque at 4,000 rpm. The 2010 WRX STI achieves the very stringent Bin 5 Tier 2-Federal (EPA) and LEV2-California Tier 2/Bin 5 emissions certification.

The WRX STI engine is based on a specially reinforced semi-closed deck engine block with high-strength cast pistons. A semi-closed deck design provides the same cooling efficiency as an open-deck cylinder block but with the higher strength of a full closed deck. Special reinforcing ribs in the block provide additional strength, and the crankshaft is nitride-hardened.

The turbocharger in the WRX STI engine produces a maximum of 14.7 PSI of boost, compared to 14.2 PSI in the standard WRX. Solid engine mounts help to minimize engine movement, which in turn enhances handling agility. The WRX STI exhaust system features an efficient high-flow rear catalytic converter, low backpressure muffler and two sets of dual-outlet chrome tailpipes.

Dual Active Valve Control System (Dual AVCS) variable valve timing technology controls valve timing on both the intake and exhaust valves. The system helps eliminate the compromise between low-end torque and high-rpm horsepower and also helps to enhance fuel economy and reduce emissions.

SI-DRIVE Gives Driver More Control
Subaru Intelligent Drive (SI-DRIVE) technology allows the driver to tailor the car’s driving characteristics by choosing from among three selectable modes – “Intelligent,” “Sport” and “Sport Sharp” – using a rotary dial on the center console. SI-DRIVE alters vehicle performance characteristics by regulating the Engine Control Module (ECM) and by fine-tuning the Electronic Throttle Control system.

Photo: 2010 Subaru Impreza WRX STI Special EditionPhoto: 2010 Subaru Impreza WRX STI Special Edition

With Intelligent mode selected, SI-DRIVE reduces engine torque and maximum power and switches to a more relaxed throttle response curve, making it useful for commuting in traffic, for example.

Intelligent mode’s more relaxed responses and lower peak torque output can be used to complement the low-traction-surface driving safety provided by the Symmetrical All-Wheel Drive System. (Subaru recommends that WRX STI drivers install proper winter tires for driving in snow conditions.)

“Sport” mode provides quick throttle responses and powerful, linear acceleration, making it ideal for everyday sporty driving. In “Sport Sharp” mode, SI-DRIVE modifies the engine’s electronic throttle mapping to deliver super-quick throttle response and put down the power sooner.

The Impreza WRX STI is exclusively equipped with a 6-speed manual transmission designed to handle high-torque capacity while providing short, smooth shifts. Triple cone synchronizers on 1st and 2nd gears, a double-cone synchronizer on 3rd gear and single-cone carbon synchronizers on all other forward gears help ensure durability. Incline Start Assist, shared with all Impreza models equipped with a manual transmission, can momentarily prevent the vehicle from rolling backward when being driven away from a stop on an incline.

DCCD All-Wheel Drive with Three-Mode Vehicle Dynamics Control
The 2010 WRX STI is exclusively equipped with the Driver Controlled Center Differential (DCCD) version of Subaru Symmetrical All-Wheel Drive. The system employs planetary-type differential gears with a nominal 41:59 torque split. A mechanical limited-slip type center differential augments the electronically controlled center differential to enhance torque transfer performance. A steering sensor input enhances torque transfer response by accurately relaying the car’s cornering situation. A helical-type limited-slip front differential and TORSEN® torque-sensing limited-slip rear differential optimize side-to-side power distribution, helping to prevent the inside wheels from slipping during cornering.

The DCCD AWD system has three automatic modes. “Auto” mode provides the best all-around performance for most drivers and circumstances, varying the front/rear torque distribution automatically via the limited-slip type differential in response to vehicle acceleration, deceleration, steering angle, cornering force and wheel slippage. The “Auto (-) Active Sport” setting shifts the torque bias to the rear and also opens the center limited-slip differential (no locking factor), which improves steering feel. For driving on slippery surfaces, such as gravel or snow, the Auto (+) setting tightens the LSD. 


In manual mode, DCCD offers six levels of center differential locking, allowing the driver to vary the front-to-rear torque distribution (up to 50:50 maximum) to optimize AWD performance for varying driving conditions.

The WRX STI driver can also tailor Vehicle Dynamics Control (VDC) system intervention. There are three settings: “VDC Normal,” “Traction” and “Off.” The “Normal” setting provides the highest level of system engagement, utilizing traction control (TCS) and VDC. The “Traction” setting is more performance-oriented, employing less-restrictive VDC and disengaging the engine torque-reduction control. The “Off” setting disengages the VDC and the traction control functions.

Photo: 2010 Subaru Impreza WRX STI Special EditionPhoto: 2010 Subaru Impreza WRX STI Special Edition

Competition-Inspired Wide-Fender Design
Bulged front fenders and rear quarter panels, along with the rear gate-mounted spoiler and aerodynamic ground effects give the WRX STI a direct link to Subaru competition cars. A specially designed aero package helps reduce overall lift at high speeds. The front valance features a deep, aggressive front spoiler with side air vents to improve brake cooling. Front side spoilers and the front bumper flow into the STI-design aerodynamic ground effects package with side skirts. The rearmost edges of the front fender arches hide air vents that exhaust heat from the engine compartment.

The scoop in the aluminum hood feeds outside air to an intercooler. Standard high-intensity discharge (HID) low beams use manual height adjusters. The short rear overhang is accentuated by clear-lens LED rear lights and widened rear quarter panels that wrap into the STI designed rear bumper. The lower rear fascia panel integrates cutouts for the quad exhaust tailpipe tips.

Pure Performance Chassis
The WRX STI delivers ultra-crisp handling along with everyday ride compliance. High-tensile-strength steel is used at key structural points and the suspension-mounting areas. Inverted struts used for the front suspension provide high bending resistance for quicker and more consistent performance under hard cornering. Aluminum front lower A-arms reduce unsprung vehicle weight. The double-wishbone rear suspension replaced the previous-generation WRX STI model’s inverted-strut arrangement and features exclusive hubs and a wider track than the standard WRX.

The 2010 WRX STI is equipped as standard with 18-inch 5-spoke cast aluminum alloy wheels. The optional 18 x 8.5 in. BBS® forged aluminum-alloy wheels (available painted silver or gold) reduce unsprung vehicle weight by 22 lbs. The BBS Package also includes fog lights. Dunlop SP600 245/40R18 summer performance tires are used with the standard and optional wheels. The quick-ratio steering system yields 2.8 turns lock-to-lock, and the steering rack uses a “cannon mount” for greater rigidity that improves on-center response.

The Brembo Performance Brake System employs ventilated 4-wheel Super Sport anti-lock (ABS) disc brakes with Electronic Brake-force Distribution (EBD). Front discs measure 13.0 inches in diameter and use 4-piston, fixed-position calipers; the 12.6 in. rear discs use 2-piston, fixed-position calipers.

Taking input from a lateral g-sensor, a steering angle sensor, a yaw sensor and a brake pressure sensor, the Super Sport ABS can control the braking forces at each rear wheel independently. That optimizes braking ability during hard cornering to help reduce understeer. In contrast, conventional ABS systems control the rear wheels as a pair, reducing the braking force to both rear wheels equally.

Electronic Brake-force Distribution (EBD) provides precise control of braking pressure between the front and rear wheels based on the vehicle load to improve stability and stopping distances. Brake Assist analyzes the force and stroke on the brake pedal and increases hydraulic boost to provide enhanced emergency braking, also activating the ABS system early if needed.

Rally-Inspired Interior Design
The sweeping twin-cockpit design embraces occupants, and brushed aluminum-look insets flow into the center stack. Each door panel houses a molded recess that can accommodate a 24-oz. soft drink bottle, as well as small items. Double-stitched fabrics and high-grade interior plastics impart a quality feel. The WRX STI preserves its rally roots, especially with the performance-design front seats that integrate the backrest and head restraint. Seats are upholstered in black Alcantara with black leather-trimmed bolsters for optimal grip.

The instrument panel features electroluminescent gauges, with indicator needles that sweep the gauge faces upon engine startup. In between the 9,000-rpm tachometer and 160-mph speedometer are indicators for the DCCD display, VDC mode and SI-DRIVE. The 3-spoke, black leather-wrapped steering wheel tilts and telescopes and features cruise control and audio system buttons.

Thanks to its high-strength body structure, the WRX STI provides the useful 60/40-split fold-down rear seat without requiring additional structural bracing that might have been needed with the performance suspension and tires. The compact layout of the double-wishbone rear suspension results in less intrusion into the cargo area, providing a wider and deeper luggage compartment. The wide and flat load floor can accommodate two Tour-size golf bags with the rear seatbacks in the upright position.

Navigation and High-Performance Audio
Standard amenities that help make the WRX STI an excellent everyday driver include an automatic climate control system with cabin air filtration; AM/FM premium stereo with 6-disc in-dash CD changer and 10 speakers, plus a vehicle security system with engine immobilizer. The Radio Broadcast Data System can display a song’s title and artist and other information.

The optional navigation system integrates a vehicle information center and, new for 2010, Bluetooth hands-free calling. All Impreza models equipped with the navigation system feature Audyssey MultEQ audio enhancement. Used in high-end home theater systems, Audyssey MultEQ creates the optimal sound experience for passengers in each seat position by tuning equalization that corrects for time and frequency response.

In addition to an input for MP3 players, the center console also includes video jacks that can accommodate portable gaming devices. These can be displayed on the navigation screen when the vehicle is parked. The WRX STI comes pre-wired for XM® or SIRIUS® Satellite Radio.

Subaru Safety
The new-generation Impreza models utilize the proven Subaru Ring-Shaped Reinforcement Frame body structure with front and rear crumple zones. All Impreza models for 2010 feature standard side-curtain airbags. The Subaru Advanced Frontal Airbag System (SRS) features front seat side impact air bags. In the passenger side front seat, a sensor module detects weight – first determining if the seat is occupied, and if so by a child or adult – to control air bag deployment. As part of the system, the dashboard features an “Airbag” indicator light. There are 3-point seatbelts for all seating positions, including front height-adjustable seatbelts with electrically triggered pre-tensioners and force limiters.

View more 2010 Subaru Impreza WRX, WRX & WRX STI Special Edition pictures in our 2010 Subaru Impreza WRX, WRX & WRX STI Special Edition photo gallery

View more 2010 Subaru Impreza 2.5i, 2.5GT & Outback Sport pictures in our 2010 Subaru Impreza 2.5i, 2.5GT & Outback Sport photo gallery

2010 Subaru Impreza 2.5i, 2.5GT, Outback Sport, WRX & WRX STI specifications, overview, information and imagery courtesy of: Subaru

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