Subaru - Impreza, Impreza WRX & Impreza WRX STi

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Subaru - Impreza, Impreza WRX & Impreza WRX STi

IMPREZA

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The Subaru Impreza is a compact car that was first introduced by Subaru in 1993. In addition to filling the small-car market segment among Subaru's offerings in the Japanese, U.S., European (and various other) markets, the Impreza chassis rose to prominence in rally racing more effectively than Subaru's previous contenders. Formerly, Subaru had fielded its larger, mid-size car, the Legacy, for rally purposes. However, as rally competition shifted toward smaller and lighter chassis, Subaru needed a smaller and faster car—a role in which the Impreza was immediately successful and in which the Impreza continues to compete effectively, albeit in more powerful versions than were initially introduced.

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1997 Subaru Impreza Outback Sport

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2005 Subaru Impreza GX Sport UK in WR Blue

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2005 Subaru Impreza Sport Wagon

"Impreza" is a coined word, deriving from an originally Italian word, impresa, meaning a badge or motto.

In 1993, the Impreza was offered in either front-wheel drive or all-wheel drive versions and only as a four- or five-door sedan. In later years, the two-door coupé was introduced, although production of the coupé ended with the introduction of the redesigned 2001 model year. The engine that came in the car initially was a naturally-aspirated 1.8 flat-4 (the EJ18), followed in successive years by larger and turbocharged engines. The basic turbocharged motor, the EJ20, produces 211 bhp.

Starting in 1994, Subaru introduced Subaru Tecnica International (STi) versions of the Impreza in the Japanese and European markets, which were upgraded in many categories, including performance-tuned engines and suspensions. The STi versions of the Impreza were immensely successful in rallies and popular among street racers. Its top speed is electronically limited at 250 km/h (155 mph) and it has a 0–100 km/h time of 4.7 seconds. In the United States, release of the basic turbocharged Impreza, the WRX with a 227 hp 2.0 L motor, did not occur until the 2002 model year, and the Impreza WRX STi was delayed until the 2004 model year; furthermore, the U.S. version of the STi includes various departures from the Japanese and European counterparts (such as a standard-turbo 2.5 L EJ25 motor in the U.S., rather than the twin-scroll turbo 2.0 L motor sold elsewhere). All 2006 U.S. Imprezas will use the 2.5 L EJ25 engine.

The Impreza brought Subaru three consecutive World Rally Championship titles (1995–7) and was considered the fastest car in the championship.

The Impreza was Wheels magazine's Car of the Year for 2000.

As of late 2004, the most recent overhaul of the Impreza occurred with the 2002 model year, with controversial "bug-eyed" styling for its headlamps, and the discontinuation of the two-door coupé version. Some customers' and the press's negative reaction to the look forced Subaru to facelift the car by 2003, with less unconventional, squarer headlamps. All 2006 Imprezas, including the performance models, have been redesigned again with the controversial "jet intake and wings" grille first debuted on the Subaru B9 Tribeca sport-utility vehicle, along with new headlights, taillights, and bumpers. Opinion on this style is split, but is generally regarded as better applied on the Impreza than the Tribeca.

Models offered in Australia in 2005 include the GX (2.0 L engine, this model has become the baseline Impreza in Australia), RV (2.0 L engine, styled for active lifestyles), RS (2.5 L engine, sport model) along with the WRX and STi version thereof. The RX model has been abandoned in Australia, and its position in the Impreza lineup has been subsumed by the GX (which had formerly been a sparsely outfitted budget model).

Subaru used the Impreza chassis for the mechanical underpinnings of the Subaru Forester, a small SUV designed to compete in the segment comprising the Honda CR-V and Ford Escape; also, the hatchback—or Impreza Wagon—formed the basis of the Saab 9-2X released in 2004 (given the tongue-in-cheek moniker, "Saabaru").

In Israel it was released in 1993 as a replacement for the Leone and models included 1.6L FWD sedan and station wagon, called Grand Leone until 1995, and 2.0L turbo 4WD version called Impreza Turbo.


IMPREZA WRX

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The Subaru Impreza WRX is a turbocharged version of the Subaru Impreza, a small all wheel drive sedan. The WRX has become a popular choice for automobile enthusiasts wherever it is sold for its high performance, great handling, and relatively affordable price (approximately $45,000 Australian, or $25,000 US).

Originally introduced in 1992 in Japan, then shortly afterwards in Australia and Britain, the WRX had a turbocharged flat-4 2.0 L engine producing 155 kilowatts of power (208 horsepower). From the 1997 model and later model, the WRX offers 250 horsepower. Compared to the base Impreza, the WRX had wider low-profile tires, larger brakes (further improved in later versions with the fitment of four-piston calipers and larger discs), and firmer, higher quality suspension components.

The current WRX is based on the Peter Stevens designed Subaru Impreza WRC. The now famous instructions given by Prodrive boss David Richards were to make a car that "looked like it was doing 100 mph, even when it was standing still in a car park".

A series of low-volume versions with even greater power and grip were built by Subaru's in-house modifier, Subaru Tecnica International (STi). STi versions of the Impreza, which produces 300 horsepower (224 kW) from new, are often raced, largely unmodified, in production car circuit racing and stock classes of car rallies to great success. Introduced in 1994, the STi has proven to be a very popular high(er)-performance machine in the Japanese domestic market.

In the 2002 model year, an all-new version of the car was released, finally appearing in the United States, with an engine rated for 227 hp (169 kW) and 217 ft·lbf (294 N·m) of torque. The USDM engine produced far less power than Impreza WRX offered elsewhere in the world due to the modification done on the engine to satisfy the US emission regulation. To celebrate the debut of the STi in the European market, 1,000 special "ProDrive" models were produced with exclusive ProDrive interior items designed by Peter Stevens. The Impreza WRX was on Car and Driver magazine's Ten Best list for 2002 and 2003.

While the new model was more refined and handled better, it was not as popular with enthusiasts since its greater weight (approx 3100 lb or 1400 kg) hampered performance slightly, although 0-60 mph acceleration time takes approximately 5.5 seconds. A higher-powered engine (300 hp) fitted to the Japanese market version remedied that problem somewhat. In addition to the sedan model, a 5-door wagon was offered, and met with brisk sales. Even so, the exterior "bug eyed" styling was widely regarded as somewhat unattractive. As a result, in an unusually early revamp, Subaru updated the style again for the 2004 model year. A third update adorns all 2006 Imprezas, including the performance models, with the controversial "jet intake and wings" grille first debuted on the Subaru B9 Tribeca sport-utility vehicle, along with new headlights, taillights, and bumpers. Opinion on this style is split, but is generally regarded as better applied on the Impreza than the Tribeca. Subaru chose this style to go back to their heritage, paying homage to their grandfathered company, the Nakajima Aircraft Company.

In the 2004 model year, Subaru began selling the highly performance-tuned WRX STi in the United States, with a 2.5 L engine with AVCS producing 300 hp (224 kW).

As of the 2006 model year, Subaru updated the US model to use a 2.5 L engine with AVCS that produces 230 hp (171.5 kW) and 235 ft·lbf (318 N·m) of torque. The STI model (Subaru has capitalized the I in STI in their promotional literature and website) continues to use a 2.5 L producing 300 hp.

The Subaru Impreza WRX is used as the basis for the Saab 9-2X Aero. It is manufactured by Fuji Heavy Industries, Ltd..

Recently, Toyota bought several shares of Fuji Heavy Industries, Ltd., most likely leading to the eventual overtake of the company in the next few years by Toyota.


IMPREZA WRX STi

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2006 Subaru Impreza WRX STi

The Subaru Impreza WRX STI (also referred to as simply, STI) is a high-performance version of the Subaru Impreza WRX, tuned by Subaru Tecnica International. Originally sold only in Japan and Europe, Subaru began selling the STI in North America in 2004. Available in the Japanese domestic market with a 2.0 L engine, the North American STI features a 2.5 L powerplant. The STI weighs nearly 3300 lb.

USDM models claim 300 hp at 6000 rpm and 300 ft·lbf of torque at 4000 rpm (Subaru.com, 2005). Global models claim 280HP at 6000 rpm and 279 lb/ft torque at 4000 rpm (Subaru-global.com, 2005). The US claim 0–60 mph times of 4.6 s whereas the Japanese And European models claim 5.1 s.

The improvements by Subaru Tecnica International are directed towards the racing enthusiast crowd. The improved features over the standard WRX are:

Manual transmission only
Modified body aerodynamics (Including a significantly larger rear spoiler)
Larger Hood Scoop
Intercooler spray
2.5L Engine (Compared to 2.0L) (USDM model only, global models have 2.0L)
300HP (vs. 227)
Driver Controlled Center Differential
Larger disc brakes
High Intensity Discharge headlights
Interior improvements (steering wheel, racing seats)
Sticker price ~ $6,000 more
The STI is the only new Impreza not being produced with a San Remo Red body paint option.

The STI is the only Subaru with a handbrake that disconnects the center differential for reduced driveline stress, a feature used often in Rally racing.



SOURCE: INTERNATIONAL
 
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