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2007 Subaru Impreza WRX STI Limited

Subaru of America, Inc. today unveiled the 2007 Impreza WRX STI Limited model at the New York International Auto Show. The new edition of the road-conquering Impreza WRX STI packages creates greater comfort and refinement with subtler exterior styling, but does not sacrifice the performance of this street legend.

The WRX STI Limited will be available in the fall in a limited run of 800 numbered units, 400 in Satin White Pearl and 400 in Urban Gray Metallic.

The 2007 WRX STI Limited delivers all the power and performance of the standard model. This new limited-edition version adds a layer of refinement and design detail enhancements targeted at a new group of driving enthusiasts looking for supercar performance but with an understated demeanor. Designed by Subaru Tecnica International (STI), the high-performance and motorsports subsidiary of Fuji Heavy Industries Ltd., the WRX STI Limited is descended from the Subaru WRC Rally car.

'The WRX STI redefined the performance car category when it was introduced in 2004. We know some enthusiasts have resisted the temptation to buy one simply because they want more everyday driving comfort and refinement, along with less aggressive styling,' said Fred Adcock, executive vice president, Subaru of America. 'Now, with the STI's reputation for pure performance unquestioned, we recognized an opportunity to broaden the car's appeal.'

Less Show, Same Go

The 2007 WRX STI Limited stands apart from the standard model with an appearance that's more low-key, and even stealthy. A new trunk-mounted lip spoiler replaces the standard model's large dual-plane rear spoiler, and the black

aluminum roof vane spoiler is deleted. A new, deep front lip spoiler further distinguishes the WRX STI Limited from the standard model.

New Enkei wheels with high-luster paint replace the BBS® wheels, keeping the same 17 x 8-in. size and 225/45 ZR17 Bridgestone Potenza RE070 directional performance tires. Behind the new wheels, black Brembo® brake calipers with white lettering have a more reserved appearance than the gold and red-painted calipers on the standard WRX STI.

All WRX STI Limited models feature distinctive black gloss B-pillar paint and high luster paint for the exterior mirrors, and this special edition model includes standard fog lights.

New Refined Interior Keeps the Focus on Performance

The interior of the 2007 Impreza WRX STI Limited balances the performance-directed design and attitude with a dose of refinement. Most notably, the WRX STI Limited replaces the perforated blue high-grip Alcantara® fabric seating surfaces with leather and new dark gray metallic bezels and interior trim.

For the first time in a WRX STI, the performance-design front seats are heated for all-season comfort. Also enhancing all-season driving pleasure, the 2007 WRX STI Limited features the first-ever power glass moonroof on this model. Beyond the changed interior appearance, additional features include new carpeting with improved sound insulation materials, an auto-dimming compass rear view mirror and an audio system input jack for an iPod or other digital music player. Finally, each car in this series gets a sequential number plate.

The standard automatic climate control system integrates cabin air filtration. SIRIUS™ Satellite radio availability enhances the versatility of the standard 120-watt AM/FM premium stereo, which includes a 6-disc in-dash CD changer and six speakers.

Rally Tested and Road Ready

All Impreza WRX STI models are powered by a turbocharged and intercooled 2.5-liter DOHC Boxer engine producing 293 horsepower at 6,000 rpm and 290 lb.-ft. of peak torque at 4,400 rpm. The Subaru Active Valve Control System (AVCS) variable valve timing technology helps provide strong torque characteristics throughout the engine's operating range. A manually operated water spray feature helps to bolster intercooler efficiency during spirited driving.

All WRX STI models are exclusively equipped with a 6-speed manual transmission that features carbon-plated double-cone synchronizers on 4th, 5th and 6th gears to help ensure durability.

Driver Controlled Center Differential (DCCD) All-Wheel Drive

From its launch, the WRX STI has been equipped with one of the most advanced and most performance-directed All-Wheel Drive systems on the market, regardless of vehicle segment. The Driver Control Center Differential (DCCD)

Symmetrical All-Wheel Drive system uses a planetary-type center differential to provide a 41:59 torque split, with automatic and manual differential modes.

Center differential lock-up is controlled by both a mechanical limited-slip type differential and an electronically controlled limited-slip differential. The mechanical limited-slip differential activates and operates initially in response to changes in engine torque, improving overall vehicle stability when accelerating or decelerating. In automatic mode, the electronic limited-slip differential controls the differential lock-up by evaluating the amount of lock-up in the mechanical limited-slip. The total amount of lock-up is based on the combination of both differentials. A steering sensor input improves torque transfer response by more accurately relaying the car's cornering situation.

Set in automatic mode, the DCCD system can vary the torque distribution ratio as needed in response to vehicle acceleration, deceleration, steering angle, cornering force and wheel slippage.

In manual mode, DCCD allows the driver to select center differential lock-up to optimize All-Wheel Drive performance for varying driving conditions. The driver first selects manual mode with a console-mounted button and then turns a thumbwheel on the center console to select from among six levels of lock-up. Increasing the locking factor keeps more power at the front wheels (max. 50:50 torque split with 100 percent lock-up selected), which the driver might want in certain driving conditions or on particular road surfaces.

A helical-type limited-slip front differential and Torsen® limited-slip rear differential help to optimize power distribution side-to-side, helping to prevent the inside wheels from slipping during cornering.

Competition-Bred Chassis

A super-stiff Ring Frame Reinforced body structure with a hydroformed front subframe provides the foundation for the high-integrity Impreza platform. Compared to the standard WRX models, the WRX STI models are lowered by 0.4-inch to help lower the center of gravity.

The 4-wheel independent suspension inherits its inverted-strut technology from the Impreza WRC competition car. Aluminum front suspension lower control arms and aluminum rear suspension lateral links reduce unsprung vehicle weight. A quick-ratio steering system yields 2.6 turns lock-to-lock, and the steering rack uses a 'cannon mount' for greater rigidity that improves on-center response.

The powerful Brembo Performance Brake System employs front discs measuring 12.7 inches in diameter and 1.2-inch thick and utilizing 4-piston, fixed-position calipers. The rear discs are 12.3 inches in diameter and 0.8-inch thick and use 2-piston, fixed-position calipers.

A combination of Electronic Brake-force Distribution (EBD) and the Super Sport Anti-lock Braking System (ABS) helps to reduce stopping distances and understeer compared to conventional ABS systems. EBD provides precise control of braking pressure between the front and rear wheels based on the vehicle load to improve stability and stopping distances. Super Sport ABS, using input from a lateral-g sensor, can control the braking forces at each rear wheel independently, optimizing the braking ability during hard cornering to help reduce understeer.

All Impreza, WRX and WRX STI models are equipped as standard with the Subaru Advanced Frontal Air bag system and front seat head/chest side impact air bags (SRS). The driver's side air bag 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 on the passenger seat – first determining if it's occupied, and if so by a child or adult – to control air bag deployment.

by Subaru of America, Inc.

by Subaru

Introduced by Subaru in November of 1992, the Impreza is a compact car that was offered in either front wheel or all wheel drive and featured sporty curves. The Impreza came in both four-door sedan/saloon versions or five-door station wagon/estate. More compact than the Legacy, the Impreza had a more enhanced high-performance driving and feeling of quality than its predecessor.

The Impreza became Subaru's entry into the small-car maket segment in U.S., European, Japanese and numorous other world markets. ‘Subura' a Japanese word meaning ‘unite' has a reputation for reliability and customer satisfaction that is represented in their more than 10 million vehicles sold worldwide.

Equipped with a flat engine (or an internal combustion engine, also called a boxermotor) the Impreza came with distinguishable Subaru characteristics. With an engine choice of 1.5: or 1.8L naturally-aspirated engines that were neither turbocharged nor supercharged.

Available in a 4-wheel drive turbo charged version that delivered 211Bhp and had the distinction of the turbo charger mounted on the right side of the engine. The intercooler is located above the engine, therefore the reason for the big central air vent on the bonnet of the Impreza. On the racing version of the Impreza, the intercooler is located in the front bumper.

The Impreza came with an engine that was mounted longitudinally, making the gearbox and transmission much easier to fit and service.

For drivers searching for a car that provides thrills without major frills, the Japanese manufacturers have gained the status of being the only ones still able to produce a car for such a low price. Subaru Impreza turbo is gaining impressive commercial success due to price to performance ratio, its racing successes and reliable features.

The Impreza turbo's commercial success has led to production of more impressive versions that aren't available outside of Japan. The Impreza GT turbo evolved into becoming a multiple World Rally Champion with three world championship titles.

Common in Japan and Europe, special editions of the Impreza were available, usually coinciding with significant victories at World Rally Championships.

For the 1997 model year, the Impreza received an updated exterior facelift that was followed by a complete interior redesign in 1998.

A first-generation Impreza, turbocharged was never received in the North American market.

by Jessican Donaldson

Subaru introduced its Impreza Compact Car in 1993 and has since become a pinnacle of performance. The name 'Impreza' was derived from an Italian word 'impresa', meaning a feat or achievement. In Polish, the name 'Impreza' means to 'party', an 'event' or 'show'. In either language, the name is suitable.

When the Impreza was first introduced in November of 1993, it was available in either front wheel drive or all wheel drive configuration. Two bodystyles were offered, a four-door sedan or five-door station wagon. The two-door coupe followed a few years later, in 1995. Trim levels included the LX, GL, and Sport. Adding to the vehicles versatility, the Impreza was offered with a variety of engines, including a 1.6, 1.8, and 2.0-liter engine. To boost performance further, a turbocharger and intercooler was available on the 2-liter engine. Horsepower for the forced-induction engine was an impressive 208. In the Japanese market, the output was even higher.

Subaru Tecnica International (STi) was formed in 1988; their purpose was to specialize in the preparation of vehicles for rallies. In 1994, they were given the opportunity to create a version of the Impreza to bear the 'STi' nameplate. When introduced, it was only available in the Japanese Domestic Market (JDM) and European Domestic Market (EDM). These versions featured performance-tuned engines, transmission, and suspensions. Horsepower was raised above the normal WRX models, and could carry the vehicles from zero-to-sixty in just 4.9 seconds. Top speed was electronically limited at 122 mph. The European market had a slightly de-tuned version of the engine, though performance was still impressive. Additional steps were taken to prepare the vehicles for rally competition. The soundproofing material was reduced, the air conditioning removed, and void of many non-essential amenities. The overall weight of the vehicle was reduced significantly.

The Impreza received cosmetic changes in 1997 and the interior was redesigned in the following year. The design-inspiration for the interior was borrowed from the Forester.

Special edition Impreza's have been introduced throughout its production lifespan. These limited edition models are often tuned for greater performance or given unique cosmetic changes. The purpose is often to commemorate a racing success or to honor a racing legend. Editions include the Series McRae, 555, Catalunya, Terzo, RB5, P1, and 22B. A limited edition version of the Impreza Wagon was even offered for a short time, dubbed the CasaBlanca.

The European market received a performance upgraded version of the Impreza in 1999 which featured an improved turbocharger and 4-pot calibers with larger disc brakes. The suspension was improved and the seating became more racer-oriented with bucket seats similar to the STi version.

While the rest of the world was offered the turbocharger version of the Impreza, the North American market was left to sit on the side-lines. The turbocharger would not come across 'the pond' during the first generation of the Impreza. The Impreza was offered with the 1.8-liter engine with either front- or all-wheel drive. A 2.2-liter version of the engine became available in 1995. The FWD was later droped and all Subaru's became all-wheel drive as standard.

Subaru was unsure of the performance market in North America, and thus, offered only basic engines. In 1998, the year the 1.8-liter engine was no longer available, Subaru decided to explore the possibilities of performance in the US. They offered a performance model dubbed the Impreza 2.5RS. The 2.5-liter DOHC naturally-aspirated engine produced 165 horsepower and had performance upgrades throughout the vehicle, including larger brakes and 16-inch five-spoke gold-colored wheels. Hood vents, rear spoiler, and a hood scoop helped segregate the styling from this 'special' model and its non-tuned sibling.

In 2001, Subaru introduced a larger, more refined and improved, Impreza. For some, the changes were a step in the wrong direction, as the car grew in size and weight. It was tamer beast for the typical day-to-day driving conditions and the extra size meant it was more versatile. Also, the coupe model was no longer offered.

The WRX version, for the United States, with its 2.0-liter turbocharged engine that cranked out nearly 230 horsepower became available the following year, in 2002. The US had to wait a long time to get the STi version, which did not enter into production for the States until 2004. To comply with safety and emission control laws in the United States, it was not the same thoroughbred racer as in other parts of the world. Still, it was a very impressive machine. In other markets, the STi was equipped with a twin-scroll turbocharger 2.0-liter engine. In the US, the STi was powered by a 2.5-liter EJ25 engine mated with a turbocharger.

In 2003, the Impreza was given a facelift, mainly due to the negative reaction by some media outlets. One of the more noticeable changes were to the headlamps, which became more square. Another redesign occurred in 2006 on all Impreza's, featuring changes to its headlights, taillights, and bumpers - among other changes.

The Third generation of the Impreza was introduced to the world at the 2007 New York Auto Show, ready for sale in 2008. It will be available as a four-door sedan and five-door hatchback.

by Dan Vaughan