ALL-NEW 2015 SUBARU WRX® STI® DEBUTS AT NORTH AMERICAN INTERNATIONAL AUTO SHOW IN DETROITNew platform offers a stiffer, more agile chassis for Subaru's global performance flagship model
• Bold new sedan model wîth aero body design
• High-performance chassis wîth new Active Torque Vectoring
• 305 hp turbo BOXER engine; most powerful engine in the §egmènt
• Driver Controlled Center Differential All-Wheel Drive
• STI Launch Edition limited to 1,000 availableDETROIT
- Subaru of America, Inc. today introduced the all-new 2015 WRX STI, Subaru's iconic performance flagship model, at the North American International Auto Show. Subaru will offer a WRX STI Launch Edition, limited to 1,000 units and exclusively featuring WR Blue paint and gold BBS® forged alloy wheels and unique interior trim.
Powered by the legendary 305-horsepower 2.5-liter turbocharged BOXER engine, the 2015 WRX STI debuts a new four-door wide-body design, built on a stiffer chassis for even greater handling agility and precision. The WRX STI provides a rally-bred drivetrain and all-wheel drive handling that is unique to this model. Handling is enhanced wîth a stiffer chassis, firmer springs and faster §teering (13.0:1 ratio).
New for the 2015 WRX STI, Active Torque Vectoring joins an arsenal of the model's proven handling technologies that includes Multi-Mode Driver Controlled Center Differential (DCCD) Symmetrical All-Wheel Drive, Multi-Mode Vehicle Dynamics Control, and a Brembo® Performance Brake System wîth Super Sport ABS.
The 2015 WRX STI carries its bold personality inside, where new Alcantara seating surfaces accented by red and black leather bolsters and red stitching set the tone for the upgraded and roomier cabin. A driver-focused interior remains integral to the WRX STI performance character, wîth the new model debuting a motorsports-inspired flat-bottom §teering wheel and new whiplash-reducing performance-design front seats wîth height and tilt-adjustable head restraints. A wide array of new user technologies include, for the first time in a WRX STI, availability of a harman/kardon® premium audio system.
Iconic STI Design Exclusively in Sedan Form
| ||Vital Stats|
|Engine : 2.5 L., 4-cylinder|
Power: 305 hp
Torque: 290 ft-lbs
A bolder front design makes the 2015 WRX STI look ready to devour the road. The 'nose-cone' configuration combines the grille and bumper cap into one unit ahead of the hood, which for the 2015 model is made from aluminum to reduce weight over the front of the car. Narrower headlights, designed to evoke a raptor's stare, flank the Subaru hexagonal grille. It's a more powerful stare thanks to new standard LED low-beam headlights.
The special hood, fenders, doors and quarters, bumpers, headlights and taillight clusters convey the WRX STI identity. As on previous WRX STI models, a functional hood scoop supplies the intercooler wîth fresh air, and in the 2015 model it is set more deeply into the hood to provide better forward visibility.
Other new performance-oriented details include foglight surrounds wîth a carbon fiber-like pattern and front fender vents that feature a mesh screen. A full aerodynamic body package includes the large trunk spoiler that has been a WRX STI signature feature. A rear diffuser, LED taillights and LED center high-mount stop lamp (CHMSL) leave a distinctive signature. New, Stiffer Chassis for Greater Handling Agility
The 2015 WRX STI body structure makes greater use of high-tensile steel than the previous model and features special stiffening elements at key locations. The stiffer chassis helps yield a super-quick §teering response that was benchmarked against top-handling sports cars. The 13.0:1 §teering ratio provides a quick 2.5 turns lock-to-lock compared to 14.5:1 and 2.8 for the standard WRX model.
As on previous WRX STI models, the 2015 version uses an exclusive inverted-strut front suspension system that provides higher levels of cornering agility. Aluminum front lower L-arms reduce unsprung vehicle weight. The STI-tuned suspension teams wîth standard 18-inch wheels and 245/40R18 summer performance tires, wîth the WRX STI Launch Edition and WRX STI Limited models featuring BBS® forged aluminum-alloy wheels. 305-hp Turbo BOXER Engine
The 2015 WRX STI is powered by a 2.5-liter turbocharged/intercooled 4-cylinder BOXER engine that employs the 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 WRX STI engine is teamed exclusively wîth a specially reinforced 6-speed manual transmission, which includes an STI short-throw shifter in the Launch Edition model. Incline Start Assist can momentarily prevent the car from rolling backward when being driven away from a stop on an incline.
The Subaru Intelligent Drive (SI-DRIVE) powertrain management system 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 and by fine-tuning the electronic throttle control system.
Multi-Mode DCCD All-Wheel Drive wîth Three-Mode Vehicle Dynamics Control
The 2015 WRX STI is exclusively equipped wîth the Multi-Mode Driver Controlled Center Differential (DCCD) version of Subaru Symmetrical All-Wheel Drive. This sophisticated system uses planetary-type center differential gears wîth a nominal 41:59 torque split. A mechanical limited-slip type center differential augments an electronically controlled center differential to enhance torque transfer performance.
Sensor inputs that include §teering angle, throttle position, RPM, lateral-g, yaw, brake, ABS and wheel speed govern torque transfer response. A helical-type limited-slip front differential and a TORSEN® torque-sensing limited-slip rear differential optimize side-to-side torque distribution.
The DCCD AWD system features three automatic modes, each using varying degrees of center differential locking to match different driving situations. In manual mode, the driver can select one of six center differential locking levels to suit the driving situation.
Active Torque Vectoring, an enhancement of the Multi-Mode Vehicle Dynamics Control (VDC) stability and traction control system, can apply brake pressure to the inside front wheel to facilitate more neutral cornering. The VDC system offers yet more driver choices, wîth three settings: 'VDC Normal,' 'Traction' and 'Off.' Each provides respectively lesser degrees of system engagement, allowing the driver to tailor response for the driving situation. Active Torque Vectoring remains engaged for 'Normal' and 'Traction' modes.
A one-inch longer wheelbase than the previous WRX STI helps provide a roomier cabin in the new model. The windshield is more raked than before, wîth the A-pillar pulled forward nearly eight inches at the base for better forward visibility, aided by a lower dashboard and narrower A-pillars. Lower side sills and wider-opening doors make ingress/egress easier. Rear seat legroom is increased by nearly two inches, and trunk capacity is now 12 cu. ft., up from 11.3 cu. ft. in the previous WRX STI sedan. (concept carz) A standard 60/40-split fold-down rear seat extends versatility. New available Welcome Lighting responds to the driver approaching the car.
In the 2015 WRX STI, the driver grips a new flat-bottom, leather-wrapped tilt/telescoping §teering wheel that integrates switches for audio and Bluetooth control. The STI Design electroluminescent gauge panel gets a new 3.5-in. central LCD screen that displays various functions, including low-level warnings for oil and windshield washer fluid and the selected gear.
Rich-lòòking appointments and details abound, including soft-touch materials for the dashboard, door trim and center console armrest. A new multi-information central display wîth 4.3-in. LCD screen provides a multitude of vehicle system functions, including a standard rear camera display, a boost gauge display, audio (on non-navigation models), Bluetooth and climate control settings, and a VDC screen showing traction control operation. The display can also provide a vehicle self-check and maintenance reminder.
Standard features for the 2015 WRX STI include dual-zone automatic climate control and the All-Weather Package (dual-mode heated front seats, heated exterior mirrors and windshield wiper de-icer). The new standard audio system combines AM/FM stereo wîth HD Radio®, a single-disc in-dash CD player, 6 speakers, MP3/WMA capability, Radio Data Broadcast System (RDBS), Bluetooth hands-free calling and audio streaming, iPod® control capability, iTunes® Tagging, SiriusXM® Satellite Radio (subscription required), ÚSB port and a 3.5mm auxiliary audio input jack. Numerous compartments located in and around the center console hold phones, ÚSB drives and MP3 players.
An available touch-screen navigation system displays on a 6.1-inch LCD screen and offers voice controls. The WRX STI Limited model adds the luxury of leather-trimmed upholstery, an 8-way power driver's seat, the harman/kardon premium audio system and a power moonroof that opens one inch farther than on the previous model. Subaru Safety
Subaru's renowned safety package uses the brand's proven Ring-shaped Reinforcement Frame body structure, which has been shown to excel in the new small overlap test by the Insurance Institute for Highway Safety (IIHS). In the cabin, a driver's knee airbag is added to the roster of safety features that includes front side pelvis/torso airbags and side curtain airbags that offer front and rear outboard seat coverage.
Subaru produces a full line of all-wheel drive sedans, crossovers and SÚVs, along wîth the rear-wheel drive BRZ sports car.Source - Subaru
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 Daniel Vaughan | Jul 2007