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MISSISSAUGA, ON, Aug 3, 2012; Subaru Canada, Inc. (SCI) is pleased to announce the launch of the 2013 Subaru Impreza WRX STI. Ultimately, it’s all about performance, and the 2013 WRX STI continues to be the ultimate performance Subaru with its 305 horsepower supercharged turbocharger / intercooler. SUBARU BOXER
engine paired with a 6-speed manual transmission and the exclusive multi-mode Driver Controlled Center Differential (DCCD) version of Subaru’s symmetrical full-time all-wheel drive system.
Control and trust
The WRX STI’s design is based on a “wide and low” concept that gives the car an aggressive presence on the road with wide front and rear track dimensions, as well as pronounced front fenders and quarter panels. The design maintains a constant flow from the front bumper to the rear bumper, creating a distinctive identity.
On the WRX STI 4-door sedan model, the wide fenders stretch wider than the taillights, which accentuates the appearance of stability. A striking high profile rear spoiler was exclusively designed for the STI 4-Door. The design contributes to a sufficiently low coefficient of drag, and the rear spoiler design ensures stable handling at high speeds with zero lift. The WRX STI 4-Door has its own version of the four-tailpipe exhaust in polished stainless steel.
The WRX STI offers ultra-precise handling as well as daily driving compliance. High tensile steel is used at key structural points and suspension mounting areas. The inverted struts used for the front suspension provide high flexural strength for faster, more consistent performance in tight turns. Aluminum front lower L-arms reduce the unsprung weight of the vehicle.
A specially tuned suspension uses ball bearings up front and stiff bushings for the rear subframe that support the double wishbone suspension – these improve camber and toe stiffness.
2013 WRX STI Specifications Dunlop SP600 245 / 40R18 summer performance tires with 18-inch Enkei aluminum rims in anthracite finish on entry model and gloss finish on Sport-tech package.
The WRX STI is equipped with advanced dynamic control systems, including Subaru Intelligent Drive (SI-DRIVE) and a Multimode Vehicle Dynamics Control (VDC) system, which includes a mode optimized for track performance. Hill Holder, present on all Impreza models equipped with a manual transmission, can momentarily prevent the vehicle from reversing when moving away from a stop on an incline.
SI-DRIVE offers ultimate control
Exclusive to WRX STI models, Subaru Intelligent Drive (SI-DRIVE) technology allows the driver to tailor the driving characteristics of the car by choosing from three selectable modes – Intelligent, Sport and Sport Sharp – using a rotary dial on the center console. SI-DRIVE changes the performance characteristics of the vehicle by regulating the engine control module (ECM) and adjusting the electronic throttle control system. With Intelligent mode selected, SI-DRIVE improves fuel efficiency and offers a more relaxed throttle response curve, making it useful for daily commuting in traffic, for example.
Sport mode offers quick throttle responses and powerful, linear acceleration, making it ideal for everyday sport driving. In Sport Sharp mode, SI-DRIVE modifies the engine’s electronic throttle mapping to deliver super-fast throttle response and reduce horsepower sooner.
Multi-mode DCCD all-wheel drive with three-mode vehicle dynamics control
The 2013 WRX STI is exclusively equipped with the multimode driver-controlled center differential (DCCD) version of Subaru symmetrical full-time all-wheel drive. The system uses planetary type differential gears with a maximum torque distribution of 41:59. A mechanical limited slip type center differential increases an electronically controlled center differential to improve torque transfer performance. Sensor inputs that include steering angle, throttle position, rpm, lateral g, yaw, brake, ABS, and wheel speed govern the torque transfer response. A helical-type limited-slip front differential and a TORSEN torque-sensing limited-slip rear differential optimize side-to-side power distribution, helping to prevent the inside wheels from slipping when cornering.
The DCCD AWD system offers three automatic modes. Automatic mode provides the best overall performance for most drivers and circumstances, by automatically varying the front / rear torque distribution via the Limited Slip Differential (LSD) in response to acceleration, deceleration, angle steering, the force of the turn and the wheel slip of the vehicle. Auto (-) mode makes less use of the center limited-slip differential (less lock-up factor) and maintains torque bias towards the rear more frequently, resulting in more handling-oriented steering characteristics. 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 lock, allowing the driver to vary front-to-rear torque distribution (up to 50/50 maximum) to optimize all-wheel drive performance for different driving conditions .
The Vehicle Traction and Stability Control (VDC) system is standard on all Subaru models. It is important to note that, in Subaru vehicles, traction control acts as 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 the spinning wheels.
Exclusive to the WRX STI, the multimode VDC system offers the driver three settings: VDC Normal, Traction and Off. The Normal setting provides the highest level of system engagement, with traction control (TCS) and VDC. Traction tuning is more performance oriented, using a less restrictive VDC and disengaging the torque reduction control from the engine. The Off setting disables the VDC and traction control functions.
Also exclusive to the WRX STI, the Brembo Performance braking system uses 4-wheel ventilated disc brakes with Super Sport Antilock Brakes (ABS) and Electronic Brake-force Distribution (EBD). The front discs are 326 mm (13.0 inches) in diameter and use 4-piston fixed-position calipers; 316 mm (12.6 inch) rear rotors use 2-piston fixed-position calipers. Taking input from a side g-sensor, steering angle sensor, yaw sensor and brake pressure sensor, the Super Sport ABS can control the braking forces on each rear wheel independently, which maximizes braking ability in tight turns to help reduce understeer. In contrast, conventional ABS systems control the rear wheels in pairs, reducing the braking force to both rear wheels equally.
Sporty, spacious and versatile interior
The standard tilt and telescoping steering wheel is a three-spoke, leather-wrapped design embossed with the STI logo at its center. WRX STI models are additionally equipped with standard aluminum alloy pedals, a driver’s footrest and a leather-wrapped gear selector. The instrument panel electroluminescent gauges use indicator needles that sweep the gauge faces as the engine is started. The performance-designed front seats integrate the backrest and headrest into a single structure and are heated for added comfort in cold weather. An advanced AM / FM / CD / MP3 / WMA audio system with six speakers is standard. This system also includes a MediaHub for iPod / USB audio integration with Bluetooth audio streaming and a voice-activated Bluetooth system for mobile phone connectivity.
The compact layout of the double wishbone rear suspension helps to minimize intrusion into the cargo space, providing a wide and deep luggage compartment. In 5-door models, the wide, flat cargo floor accommodates two Tour golf bags with the rear seat backs upright. In the 4-door sedan model, which is 165 mm (6.5 inches) longer than the 5-door model, the additional space provides a larger and deeper trunk that can accommodate three tower-size golf bags. A 60/40 split-folding rear seat further increases cargo capacity and convenience, and the 4-door also has a folding center armrest for the rear seat.
For 2013, the WRX STI Sport-tech package includes a Pioneer AVIC in-dash-connected touchscreen navigation system, smartphone integration, AM / FM / CD / MP3 / WMA audio streaming Bluetooth, Bluetooth connectivity for mobile phones with integrated steering wheel controls and Pioneer TS-A1684R front speakers. The WRX STI with Sport-Tech Package further includes a power sunroof, High Intensity Discharge (HID) xenon headlights, automatic climate control and LED turn signals integrated into the mirrors.
Electronic Brake Force Distribution (EBD) allows precise control of brake pressure between the front and rear wheels according to vehicle load to improve stability and stopping distances. Brake Assist analyzes the force and travel on the brake pedal and increases hydraulic assistance to provide enhanced emergency braking, also activating the ABS system earlier if needed.
All Impreza models use Subaru’s proven ring-shaped reinforced body structure with crumple zones at the front and rear. Front seat side air bags and side curtain air bags are standard on all Subaru models. The Subaru Advanced Front Airbag System (SRS) includes a passenger-side front seat sensor module that senses seat occupancy and passenger weight to control airbag deployment. As part of the system, the instrument panel is equipped with an airbag warning light. There are 3-point seat belts for all seating positions, including height-adjustable front seat belts with electrically triggered pretensioners and force limiters.
On Subaru Canada, Inc.
Subaru Canada, Inc. is a wholly owned subsidiary of Fuji Heavy Industries Ltd. of Japan. Based at Mississauga, Ontario, the company markets and distributes Subaru vehicles, parts and accessories through a network of more than 85 authorized dealers across Canada. For more information on the entire Subaru lineup, including full specifications, please visit www.subaru.ca.