🏷️ Basic Information

Make:

Subaru

Model:

Impreza

Year:

2009

Platform:

Third Generation (GE/GH/GR/GV)

Chassis Code Sedan:

GE

Chassis Code Hatchback:

GH

Chassis Code Wrx Hatchback:

GR

Chassis Code Wrx Sti Hatchback:

GRF

Chassis Code Wrx Sedan:

GV

Chassis Code Wrx Sti Sedan:

GVF

👋 Introduction

Market Position:

The Subaru Impreza is a compact car known for its standard Symmetrical All-Wheel Drive (AWD) system, offering a compelling blend of performance, safety, and practicality, often appealing to enthusiasts and those in inclement weather regions.

Competitive Analysis:

Competes with vehicles like the Honda Civic, Toyota Corolla, Mazda3, and Volkswagen Golf. Its AWD system is a key differentiator against many front-wheel-drive competitors in its class.

Key Features:

Standard Symmetrical AWD, horizontally-opposed 'Boxer' engines for a lower center of gravity, robust chassis, available turbocharged variants (WRX models).

📋 Manual Details

Coverage Areas:

Global (North America, Europe, Asia, etc.)

Page Count:

3619

Manual Type:

Workshop Service Manual / Repair Manual

Language:

English

Format:

PDF (Portable Document Format)

📖 Manual Coverage

Engine Mechanical:

Engine assembly, cylinder head, pistons, crankshaft, lubrication system, cooling system, timing components, fuel injection system.

Engine Management:

ECU, sensors (MAP, TPS, O2, Knock), actuators, emission control systems, diagnostics and troubleshooting.

Transmission Manual:

Clutch system, gearbox assembly, gearshift mechanism, final drive, repair procedures, fluid specifications.

Transmission Automatic:

Automatic transmission assembly, torque converter, valve body, electronic controls, hydraulic circuits, repair procedures, fluid specifications.

Drivetrain AWD:

Center differential, rear differential, driveshafts, propeller shaft, hub bearings, All-Wheel Drive system operation and service.

Suspension:

Front suspension (struts, control arms, bushings), rear suspension (multi-link, trailing arms, bushings), wheel alignment specifications.

Steering:

Power steering system (hydraulic or electric), steering column, tie rods, steering rack, troubleshooting.

Brakes:

Brake system hydraulics, ABS, EBD, brake calipers, rotors, pads, parking brake, bleeding procedures, specifications.

Electrical System:

Battery, charging system, starter motor, lighting, power windows, central locking, horn, wiper system, wiring diagrams.

Body And Trim:

Exterior panels, doors, hood, trunk, bumpers, interior trim, seat removal, glass replacement.

HVAC:

Air conditioning system, heating system, ventilation, refrigerant handling, component testing.

Safety Systems:

Airbag system, seatbelt pre-tensioners, SRS troubleshooting, safety sensor locations.

Preventive Maintenance:

Oil changes, filter replacements, coolant flushes, spark plug replacement, belt inspections, brake fluid checks, scheduled services.

Diagnostic Troubleshooting:

Step-by-step diagnostic charts, symptom-based troubleshooting, OBD-II diagnostic trouble codes (DTCs) and their meanings.

Repair Procedures:

Detailed instructions for component removal, overhaul, and reinstallation for all major vehicle systems.

Specifications And Tolerances:

Torque specifications, clearances, measurements, alignment angles, and other critical parameters.

Wiring Diagrams:

Comprehensive electrical schematics for all vehicle circuits, aiding in diagnosis and repair.

Technical Depth:

Comprehensive: Covers basic maintenance to complete engine and transmission rebuilds, advanced diagnostics, and electrical troubleshooting.

📊 Manual Specifications

File Format:

PDF

Print Quality:

High-resolution, suitable for printing individual pages or the entire document.

Binding Type:

N/A (Digital Download)

Paper Type:

N/A (Digital Download)

⚙️ Engine Specifications

Engine Code 2.5I:

EJ253 (2.5L SOHC NA)

Engine Displacement 2.5I:

2.5 liters (2457 cc)

Engine Configuration 2.5I:

Naturally Aspirated, Horizontally-Opposed (Boxer) 4-Cylinder

Horsepower 2.5I:

170 hp @ 5,600 rpm

Torque 2.5I:

170 lb-ft @ 4,000 rpm

Fuel System:

Electronic Fuel Injection (EFI), Sequential Multi-Port Fuel Injection (MPI)

Fuel Type:

Unleaded gasoline (87 octane recommended for NA models)

Engine Code Wrx:

EJ255 (2.5L DOHC Turbocharged)

Horsepower Wrx:

265 hp @ 6,000 rpm

Torque Wrx:

244 lb-ft @ 4,000 rpm

Engine Code Wrx Sti:

EJ257 (2.5L DOHC Turbocharged)

Horsepower Wrx Sti:

305 hp @ 6,000 rpm

Torque Wrx Sti:

290 lb-ft @ 4,000 rpm

🔧 Transmission

Standard Transmission Na:

5-speed manual

Optional Transmission Na:

4-speed automatic

Standard Transmission Wrx:

5-speed manual

Standard Transmission Wrx Sti:

6-speed manual

AWD System:

Symmetrical All-Wheel Drive with electronically controlled center differential (automatic) or viscous coupling center differential (manual).

Differential Wrx Sti:

Driver Controlled Center Differential (DCCD) on STI models for adjustable torque split.

📐 Dimensions

Length Sedan:

179.5 inches (4559 mm)

Length Hatchback:

173.8 inches (4415 mm)

Width:

69.9 inches (1775 mm)

Height:

57.7 inches (1465 mm)

Wheelbase:

103.0 inches (2615 mm)

Cargo Volume Sedan:

11.3 cu ft (320 L)

Cargo Volume Hatchback:

19.1 cu ft (541 L) (seats up)

Curb Weight 2.5I Auto:

3,080 lbs (1397 kg)

Curb Weight Wrx:

3,365 lbs (1526 kg)

🛡️ Safety Features

NHTSA Front Impact Driver:

5 Stars

NHTSA Front Impact Passenger:

5 Stars

NHTSA Side Impact Front Seat Occupant:

5 Stars

NHTSA Side Impact Barrier Driver:

5 Stars

NHTSA Side Impact Barrier Rear Seat:

5 Stars

NHTSA Rollover Resistance:

4 Stars

IIHS Frontal Offset:

Good

IIHS Side Impact:

Good

IIHS Rear Impact:

Good

Active Features:

Anti-lock Braking System (ABS), Electronic Brake-force Distribution (EBD), Traction Control System (TCS), Vehicle Stability Control (VSC).

Passive Features:

Front dual-stage airbags, front side-impact airbags, side curtain airbags (front and rear), active front head restraints, 3-point seatbelts with pre-tensioners.

💡 Technology Features

Infotainment Standard:

Standard audio system with CD player, MP3 compatibility, and auxiliary input jack. Higher trims may offer optional premium audio systems.

Infotainment Optional:

Optional navigation system, Bluetooth hands-free phone connectivity, and iPod integration available on select trims.

Driver Assistance Features:

Standard Vehicle Stability Control (VSC) and Traction Control System (TCS) are key driver assistance features. ABS and EBD are also standard.

Connectivity Options:

Auxiliary audio input, optional Bluetooth, and optional USB port for iPod connectivity.

🔧 Maintenance

Oil Change Interval:

Every 3,750 miles (6,000 km) or 3 months, whichever comes first, for severe driving conditions; 7,500 miles (12,000 km) or 6 months for normal driving (refer to owner's manual for specific recommendations based on engine and driving habits).

Engine Air Filter Replacement:

Every 15,000 miles (24,000 km) or 12 months, or as needed based on dusty conditions.

Cabin Air Filter Replacement:

Every 15,000 miles (24,000 km) or 12 months.

Spark Plug Replacement:

Iridium-tipped plugs: 105,000 miles (168,000 km).

Coolant Replacement:

Initial change at 30,000 miles (48,000 km) or 24 months, then every 30,000 miles (48,000 km) or 24 months thereafter.

Engine Oil Specification:

SAE 0W-20 synthetic (preferred), SAE 5W-30 conventional or synthetic.

Engine Oil Capacity:

4.8 quarts (4.5 liters) with filter for 2.5L NA.

Coolant Type:

Subaru Super Coolant (Blue) or equivalent ethylene glycol-based coolant, mixed 50/50 with distilled water.

Transmission Fluid Manual:

API GL-5, SAE 75W-90 gear oil.

Transmission Fluid Automatic:

Subaru ATF HP (High Performance) or equivalent DEXRON-III compatible fluid.

Differential Fluid Front Rear:

API GL-5, SAE 75W-90 gear oil.

Brake Fluid:

DOT 3 or DOT 4 brake fluid.

Known Issues Head Gaskets:

While less prevalent than in older EJ engines, head gasket leaks can still occur, particularly with high-mileage vehicles or those subjected to aggressive driving.

Known Issues Clutch Wear:

Manual transmission clutches can wear prematurely with aggressive driving or heavy-duty use.

Known Issues Catalytic Converter:

Early failure of the catalytic converter can occur due to various engine issues or fuel quality.

Known Issues ABS Sensors:

ABS wheel speed sensors can fail, leading to ABS, VDC, and traction control warning lights.

Known Issues Oil Leaks:

Rear main crankshaft seal and oil pan gasket leaks are not uncommon on EJ series engines.

📚 Vehicle History

Brand Heritage:

Subaru, a division of Subaru Corporation (formerly Fuji Heavy Industries), has a long history of producing reliable vehicles, with a particular focus on Symmetrical All-Wheel Drive and horizontally-opposed 'Boxer' engines, stemming from its aerospace engineering roots.

Model Evolution:

The third generation Impreza (2007-2011) represented a significant redesign with a new platform and styling. It was offered in sedan and hatchback body styles, with WRX and WRX STI performance variants maintaining their rally-inspired heritage.

Production Locations:

Japan (Ota, Gunma Prefecture) and United States (Lafayette, Indiana).

🏆 Awards & Recognition

IIHS Top Safety Pick:

The 2009 Subaru Impreza received an IIHS Top Safety Pick award.

Car And Driver 10Best:

While specific awards for the 2009 model vary, the Impreza WRX/STI has historically been recognized by automotive publications for its performance and handling capabilities.