Segment:
Compact car, known for its all-wheel-drive capability and rally heritage.
Competitors:
Honda Civic, Toyota Corolla, Mazda3, Ford Focus.
All Wheel Drive:
Standard symmetrical all-wheel-drive system in most trims, a key differentiator.
Performance Variants:
Includes information for the WRX and WRX STI performance models.
Audience:
Technicians, mechanics, and Subaru owners who perform their own maintenance and repairs.
Engine:
Detailed diagnosis, repair, and overhaul procedures for all engine variants.
Transmission:
Coverage for both manual and automatic transmissions, including clutch, gearbox, differentials, and AWD system.
Brakes:
Hydraulic system, ABS, EBD, parking brake, rotor and pad replacement, caliper service.
Suspension:
Front and rear suspension components, shock absorbers, struts, bushings, alignment specifications.
Steering:
Power steering system, rack and pinion, steering column, tie rods.
Electrical:
Wiring diagrams, starter, alternator, battery, ignition system, lighting, power accessories, fuse box layouts.
Fuel System:
Fuel pump, injectors, fuel filter, EVAP system, fuel tank.
Cooling System:
Radiator, thermostat, water pump, cooling fans, coolant specifications.
Exhaust System:
Catalytic converter, mufflers, pipes, oxygen sensors.
Body And Interior:
Body panel removal/installation, interior trim, seats, airbags, climate control system.
Scheduled Maintenance:
Detailed service intervals for oil changes, filter replacements, fluid checks, and other preventative maintenance tasks.
Troubleshooting Guides:
Systematic diagnostic procedures for common and uncommon issues, including symptom-based troubleshooting.
Repair Procedures:
Step-by-step instructions for component removal, replacement, and repair across all major vehicle systems.
Diagnostic Trouble Codes:
Explanation and interpretation of OBD-II codes relevant to the 2006-2007 Impreza.
Specifications And Tolerances:
Precise measurements, torque values, and clearances for all mechanical and electrical components.
Wiring Diagrams:
Comprehensive electrical schematics for all vehicle systems.
Depth:
Comprehensive coverage suitable for professional technicians and advanced DIY enthusiasts, covering everything from basic maintenance to complete engine and transmission rebuilds.
Engine Type Na:
2.5L Naturally Aspirated Boxer-4
Horsepower Na:
Approximately 173 hp @ 5600 rpm
Torque Na:
Approximately 166 lb-ft @ 3700 rpm
Engine Code Turbo:
EJ255 (WRX), EJ257 (STI)
Engine Type Turbo:
2.5L Turbocharged Boxer-4
Horsepower Wrx:
Approximately 224 hp @ 5200 rpm
Torque Wrx:
Approximately 226 lb-ft @ 3000 rpm
Horsepower Sti:
Approximately 305 hp @ 6000 rpm
Torque Sti:
Approximately 290 lb-ft @ 4000 rpm
Fuel Delivery:
Multi-port fuel injection (MPFI)
Fuel Type:
Unleaded gasoline (Premium for WRX/STI recommended/required)
NHTSA Front Crash Test:
5-star (driver and passenger)
NHTSA Side Impact Test:
5-star (front and rear passengers)
IIHS Moderate Overlap Front:
Good
ABS:
Standard Anti-lock Braking System
Ebd:
Standard Electronic Brakeforce Distribution
Traction Control:
Available on some models
Airbags:
Front dual-stage airbags, front side-impact airbags, available curtain airbags.
Seatbelts:
Three-point seatbelts with pretensioners and load limiters.
Oil Change Interval:
Every 3,750 miles or 6 months (severe conditions) / 7,500 miles or 12 months (normal conditions), check owner's manual for specifics.
Air Filter Replacement:
Every 15,000 - 30,000 miles or as needed.
Spark Plug Replacement:
Approximately 60,000 miles (depending on type).
Engine Oil Type:
SAE 5W-30 Synthetic (check owner's manual for exact specification and capacity, typically around 4.8 quarts for 2.5L NA).
Coolant Type:
Subaru Super Coolant (Blue) or equivalent. 50/50 mix with distilled water.
Transmission Fluid Manual:
Subaru Extra-S Gear Oil (API GL-5) or equivalent 75W-90.
Transmission Fluid Automatic:
Subaru ATF-HP or equivalent.
Brake Fluid Type:
DOT 3 or DOT 4.
Head Gaskets:
While less prevalent than in earlier generations, head gasket leaks can still occur, particularly on higher-mileage turbocharged models.
Clutch Wear:
Wear on clutch components, especially in performance-oriented WRX models due to driving style.
Turbocharger Issues:
Potential for turbocharger wear or failure in WRX/STI models if not properly maintained or if subjected to extreme use.
Brand Focus:
Subaru has a long history of producing reliable vehicles, often with a focus on All-Wheel Drive technology and practical design, originating from aircraft manufacturing.
Generation:
This represents the third generation (GD/GG chassis) of the Subaru Impreza.
Design Changes 2006:
Facelifted model for 2006, featuring updated styling including new headlights, grille, and front bumper. WRX STI received an updated center differential and suspension tuning.
Manufacturing Location:
Japan
