Impreza WRX
®
|
WRX STI
®
ENGINE AND DRIVETRAIN
WRX and WRX Premium
WRX STI
Engine
2.5-liter DOHC intercooled, turbocharged aluminum-alloy 16-valve 4-cylinder horizontally opposed SUBARU BOXER® engine.
Power
265 hp @ 6,000 rpm
305 hp @ 6,000 rpm
Torque
244 lb-ft @ 4,000 rpm
290 lb-ft @ 4,000 rpm
Compression ratio
8.4:1
8.2:1
Bore and stroke
99.5 x 79.0 mm
Valve timing
Active Valve Control System (AVCS)
Dual Active Valve Control System (DAVCS)
Intake system
Turbocharger with intercooler.
Maximum boost pressure: 13.3 psi.
Turbocharger with high-cross-flow-design intercooler.
Maximum boost pressure: 14.7 psi.
Fuel and ignition system
Sequential multiport fuel injection. Electronic Throttle Control (ETC). Engine management with integrated self-diagnostics and adaptive driving
habits capability. Direct ignition.
SI-DRIVE performance
management system
Not available
Subaru Intelligent Drive (SI-DRIVE) enables three distinctively different modes of
vehicle performance characteristics by regulating the engine control unit (ECU) and
by fine-tuning the electronically controlled throttle.
Transmission
Fully synchronized 5-speed manual
with Incline Start Assist
Fully synchronized close-ratio 6-speed manual with Incline Start Assist
Emissions
Certified Low Emission Vehicle (LEV2)
FUEL
Fuel economy (city/highway)
1
18/25 mpg
17/23 mpg
Fuel requirement
Premium unleaded gasoline (91 octane) required. 93 octane recommended (WRX STI).
SYMMETRICAL ALL-WHEEL DRIVE
Continuous All-Wheel Drive
WRX models utilize a viscous-type locking center differential with torque distribution normally configured at a 50/50-split front-to-rear. If wheel
speed differs between front and rear axles, the system helps distribute power to the wheels with the most traction.
Driver Controlled Center
Differential (DCCD)
All-Wheel Drive
Exclusive to WRX STI, Driver Controlled Center Differential (DCCD) All-Wheel Drive uses an electronically managed multi-plate transfer clutch
and a mechanical limited-slip differential in conjunction with a planetary-gear-type center differential to control power distribution between
the front and rear wheels. Featuring manual and three automatic modes, DCCD splits power 41% front and 59% rear. Sensors monitor
parameters such as wheel slippage, steering angle, throttle position and braking to help determine torque distribution and direct it to the
wheels with optimum traction. DCCD also features a limited-slip helical front and Torsen® rear differential.
STABILITY AND TRACTION
Vehicle Dynamics Control (VDC)
VDC electronic stability control utilizes sensors which constantly monitor wheel speed, steering angle, brake pressure, vehicle yaw rate and lateral
g-forces. If VDC detects a difference between the driver’s intended path and the one the vehicle is actually taking, VDC applies braking power
and/or reduces engine torque to help correct vehicle path. Exclusive to WRX STI, VDC features Standard, Off and performance-oriented Traction modes.
Traction Control System (TCS)
VDC also incorporates an all-wheel, all-speed traction control system which, when sensing a loss of traction, applies braking force and reduces
engine torque to the slipping wheel or wheels as necessary to maintain vehicle motion.
CHASSIS
Steering
Engine-speed-sensing variable power-assisted rack-and-pinion. Turning circle,
WRX
: 35.4 feet.
WRX STI
: 36.1 feet.
Suspension
Sport-tuned 4-wheel independent suspension.
Front
: Strut-type with lower L-arm.
Rear
: Double wishbone.
Front and rear stabilizer bars.
High-performance sport-tuned 4-wheel independent suspension.
Front
: Inverted-strut-type with aluminum-alloy lower L-arm.
Rear
: Double wishbone.
Front and rear stabilizer bars.
Brakes
4-wheel disc, ventilated front. Dual-piston front and
single-piston rear calipers. 4-channel, 4-sensor ABS with
Electronic Brake-force Distribution (EBD).
Front
: 11.6 inches/
Rear
: 11.3 inches
Brembo® performance braking system. 4-wheel disc, ventilated front and rear.
4-piston front and dual-piston rear calipers. 4-channel, 4-sensor Super Sport ABS
with Electronic Brake-force Distribution (EBD).
Front
: 12.8 inches/
Rear
: 12.4 inches
Brake Assist
When emergency braking is detected by how quickly the brake pedal is pressed, maximum brake pressure is immediately applied.
WHEELS AND TIRES
Wheels
17 x 7.0-inch 10-spoke aluminum-alloy. Gray color.
18 x 8.5-inch 5-spoke aluminum-alloy. High-luster silver finish.
Optional 18 x 8.5-inch 18-spoke BBS® aluminum-alloy. Silver or gold color.
2
Tires
225/45 R17 summer-performance
245/40 R18 93W ultra-high-performance
Impreza WRX
|
WRX STI
Equipment
EXTERIOR DIMENSIONS
WRX
4-door
WRX
5-door
WRX
STI
5-door
Length/Width/Height 180.3
inches/68.5 inches/58.1 inches
173.8 inches/68.5 inches/58.1 inches
173.8 inches/70.7 inches/58.1 inches
Wheelbase
103.1 inches
103.1 inches
103.3 inches
Track (front/rear)
58.9 inches/59.3 inches
58.9 inches/59.3 inches
60.2 inches/60.6 inches
Curb weight
WRX
: 3,174 lbs |
WRX Premium
: 3,229 lbs
WRX
: 3,175 lbs |
WRX Premium
: 3,229 lbs
3,395 lbs
INTERIOR DIMENSIONS
Headroom (front/rear)
40.3 inches/37.6 inches
(with moonroof: 39.3 inches/37.5 inches)
40.3 inches/37.6 inches
(with moonroof: 39.3 inches/37.4 inches)
40.3 inches/37.6 inches
Legroom (front/rear)
43.5 inches/33.5 inches
43.5 inches/33.5 inches
43.5 inches/33.5 inches
Shoulder room (front/rear)
54.8 inches/53.2 inches
54.8 inches/53.2 inches
54.8 inches/53.2 inches
Passenger volume
94.6 cubic feet (with moonroof: 93.0 cubic feet)
94.6 cubic feet (with moonroof: 93.2 cubic feet)
94.6 cubic feet
Cargo volume
11.3 cubic feet
19.0 cubic feet
(44.4 cubic feet with rear seat lowered)
19.0 cubic feet
(44.4 cubic feet with rear seat lowered)
EXTERIOR
Projector low-beam and multireflector high-beam halogen headlights
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High-intensity discharge (HID) low-beam and multireflector halogen high-beam headlights
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Foglights
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°
L.E.D. taillights (5-door)
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Functional hood scoop (feeds turbocharger intercooler)
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Front underspoiler
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STI-design front bumper with integrated spoiler
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Aerodynamic side ground effects
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Rear underspoiler (4-door)
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Rear bumper with integrated diffuser (5-door)
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Rear spoiler
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Exhaust system with dual outlets (4-door)
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Exhaust system with single outlet (5-door)
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STI high-performance-tuned exhaust system with quad stainless-steel outlets
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Body-color side mirrors
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Heated side mirrors and windshield wiper de-icer
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Body-color door handles
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Two-speed windshield wipers with variable intermittent mode and mist feature
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Single-speed rear window wiper with fixed intermittent mode (5-door)
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Power tilt/sliding-glass moonroof
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SEATING AND TRIM
6-way manually adjustable driver’s seat. 4-way manually adjustable front-passenger’s seat.
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• •
Performance-design front seats with fixed integrated head restraints, embroidered WRX logos and red stitching
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Performance-design front seats with fixed integrated head restraints and embroidered STI logos
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Heated front seats
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60/40-split flat-folding rear seatback
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Leather-wrapped 3-spoke steering wheel with cruise control buttons and red stitching
•
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Leather-wrapped 3-spoke steering wheel with audio system, cruise control buttons and red stitching
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STI-design leather-wrapped 3-spoke steering wheel with audio system and cruise control buttons
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Leather-wrapped shifter handle
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Cloth upholstery
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Alcantara®/leather upholstery
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Aluminum-alloy pedal covers
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CONVENIENCE FEATURES
Power front and rear windows with driver's auto-down
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Power side mirrors
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Electronic cruise control
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Tilt/telescoping steering column
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Dual cupholders in center console
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Single bottle holder in each door panel
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Sun visors with concealed vanity mirrors
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Center console with L.E.D.-illuminated storage tray and 12-volt power outlets
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Illuminated and lockable glovebox
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Footwell illumination lighting
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Cargo-area grocery bag and tiedown hooks (5-door)
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Retractable/removable cargo-area cover (5-door)
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INSTRUMENTATION
Analog speedometer, tachometer, coolant temperature and fuel gauges
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Sport-design electroluminescent gauges with center-mounted tachometer
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STI sport-design electroluminescent gauges with center-mounted tachometer
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Gauge needles full-sweep and trim rings illumination on start-up
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Digital trip computer displaying average fuel economy, digital clock and ambient temperature
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DCCD and SI-DRIVE modes display
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AUDIO SYSTEMS
4-speaker audio system with single-disc in-dash CD player and MP3/WMA capability
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10-speaker audio system with 6-disc in-dash CD changer, MP3/WMA capability
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and SRS Circle Surround Automotive® audio enhancement
Auxiliary audio jack
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XM® or SIRIUS® Satellite Radio capability
3
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WRX
WRX
WRX
Premium
STI
