Honda Civic, Toyota Corolla, Mazda Protege, Mitsubishi Lancer, Ford Focus.
Distinguishing Features:
Standard Symmetrical All-Wheel Drive (AWD) system (on most models), horizontally-opposed boxer engines, rally heritage.
Key Features
Manual Value Proposition:
Provides authoritative, manufacturer-specific repair procedures and specifications, crucial for accurate and efficient servicing of the 1999 Subaru Impreza.
📋 Manual Details
Coverage Areas
Primary Coverage:
Full Service Repair and Maintenance
Engine Coverage:
EJ22E, EJ25D, EJ251 (Naturally Aspirated and Turbocharged Variants)
Engine overhaul, head gasket replacement, clutch replacement, brake caliper service, suspension component replacement, electrical component diagnosis and replacement
Specifications And Tolerances:
Torque specifications, clearances, measurements for engine, transmission, suspension, brakes
Troubleshooting Guides:
Systematic approaches to diagnosing common and uncommon problems
Technical Depth
Depth:
Comprehensive: Covers basic maintenance to complete engine and transmission rebuilds, including in-depth electrical system diagnostics and troubleshooting.
📊 Manual Specifications
File Format
File Type:
Portable Document Format (PDF)
Searchability:
Searchable text, allowing quick access to specific information
Print Quality
Quality:
High-resolution scans of original factory documentation
Binding Type
Binding:
N/A (Digital Format)
Paper Type
Paper:
N/A (Digital Format)
⚙️ Engine Specifications
Primary Engine
Engine Code 1:
EJ22E
Engine Type 1:
2.2L SOHC Flat-4 (Boxer)
Horsepower 1:
135 hp @ 5500 rpm
Torque 1:
135 lb-ft @ 4000 rpm
Engine Code 2
Engine Code:
EJ25D
Engine Type 2
Engine Type:
2.5L SOHC Flat-4 (Boxer)
Horsepower:
165 hp @ 5600 rpm
Torque:
162 lb-ft @ 4000 rpm
Engine Code 3
Engine Code:
EJ251
Engine Type 3
Engine Type:
2.5L DOHC Flat-4 (Boxer)
Horsepower:
165 hp @ 5600 rpm
Torque:
162 lb-ft @ 4000 rpm
Engine Code 4
Engine Code:
EJ205 (Turbocharged)
Engine Type 4
Engine Type:
2.0L DOHC Turbocharged Flat-4 (Boxer)
Horsepower:
215 hp @ 5600 rpm (WRX)
Torque:
213 lb-ft @ 4000 rpm (WRX)
Performance
Compression Ratio Ej22E:
9.5:1
Compression Ratio Ej25D:
9.5:1
Compression Ratio Ej251:
9.7:1
Compression Ratio Ej205:
8.5:1
Fuel System
Fuel Delivery:
Electronic Fuel Injection (EFI)
Fuel Type Recommended:
87 Octane Unleaded (89 Octane for EJ205 Turbo)
Emission Control:
California Emission Standards, Federal Emission Standards. Includes EGR, O2 sensors, catalytic converter.
🔧 Transmission
Standard
Transmission Type Standard:
5-Speed Manual Transmission (TY752VB, TY754)
Optional
Transmission Type Optional:
4-Speed Automatic Transmission (4EAT)
Features
AWD System Manual:
Symmetrical All-Wheel Drive with viscous center differential (open front/rear differentials)
AWD System Automatic:
Symmetrical All-Wheel Drive with viscous coupling center differential and electronic control (active AWD)
Gear Ratios Manual:
Varies by model/trim, detailed in manual (e.g., 3.167:1 first gear)
Gear Ratios Automatic:
Varies by model/trim, detailed in manual
Clutch Type:
Dry single plate (Manual Transmission)
Transmission Fluid Manual:
API GL-5, SAE 75W-90 Gear Oil (Subaru Extra-S or equivalent recommended)
Transmission Fluid Automatic:
Subaru ATF-HP or Dexron III equivalent
📐 Dimensions
Exterior
Length:
Approx. 4340 mm (170.9 in) Sedan, 4405 mm (173.4 in) Wagon
Width:
Approx. 1690 mm (66.5 in)
Height:
Approx. 1400 mm (55.1 in) Sedan, 1420 mm (55.9 in) Wagon
Wheelbase:
Approx. 2505 mm (98.6 in)
Ground Clearance:
Approx. 150 mm (5.9 in)
Weights
Curb Weight:
Approx. 1250-1350 kg (2755-2976 lbs) depending on configuration
Gross Vehicle Weight Rating:
Not explicitly specified, but typically around 1800-1900 kg
Cargo
Cargo Volume Sedan:
Approx. 0.36 m³ (12.7 cu ft)
Cargo Volume Wagon:
Approx. 0.78 m³ (27.6 cu ft) with rear seats up
🛡️ Safety Features
Ratings
NHTSA Front Impact Driver:
4 Stars (1999 Model Year)
NHTSA Front Impact Passenger:
4 Stars (1999 Model Year)
Active Features
ABS:
Available on higher trims, standard on some models
Traction Control:
Not typically available for this model year
Passive Features
Airbags Front:
Driver and Passenger Frontal Airbags
Seatbelts:
3-point front and rear seatbelts, pretensioners for front seats
Child Seat Anchors:
LATCH system not standard on 1999 models; ISOFIX points may exist in some markets.
💡 Technology Features
Infotainment
Audio System:
Factory-installed AM/FM stereo with cassette player and CD player (optional). Speaker configurations vary by trim level.
Display Technology:
Basic analog gauges for speedometer, tachometer, fuel, and temperature. Minimal digital displays.
Driver Assistance
Cruise Control:
Standard on many higher trim levels, optional on others.
Anti Lock Braking System:
Available on select models, providing enhanced braking control.
Connectivity
Connectivity Features:
No integrated Bluetooth or smartphone connectivity. Aftermarket upgrades are common.
🔧 Maintenance
Service Intervals
Oil Change Interval:
Every 3,750 - 7,500 miles or 6 months, depending on driving conditions and oil type used (refer to manual for specifics).
Engine Oil Filter Replacement:
With every oil change.
Air Filter Replacement:
Every 15,000 - 30,000 miles or 12-24 months.
Spark Plug Replacement:
Approx. 30,000 - 60,000 miles for copper plugs, 60,000 - 100,000 miles for platinum or iridium plugs (check specific plug type).
Coolant Flush:
Every 30,000 - 60,000 miles or 2-4 years.
Timing Belt Replacement:
90,000 - 105,000 miles or 7-10 years (critical for interference engines like EJ series).
Fluid Specifications
Engine Oil Type:
API SG or SH, SAE 5W-30 or 10W-30 (viscosity depends on ambient temperature, refer to manual).
Coolant Type:
Subaru Super Coolant (Blue) or equivalent ethylene glycol-based antifreeze with demineralized water (50/50 mix).
Brake Fluid Type:
DOT 3 or DOT 4
Known Issues
Head Gaskets:
The EJ series engines (particularly EJ25D and EJ251) are known for potential head gasket failures, often manifesting as coolant leaks or internal coolant passages. The manual provides detailed procedures for diagnosis and replacement.
Crankshaft Position Sensor:
Failure can lead to stalling or no-start conditions. Diagnosis involves checking sensor output and wiring.
Cv Axles:
Wear and tear on front CV axle boots can lead to lubrication loss and joint failure, especially in AWD models subjected to spirited driving or off-road use.
Oxygen Sensors:
Aging O2 sensors can lead to poor fuel economy and increased emissions. The manual details testing procedures.
Automatic Transmission Fluid Condition:
Regular fluid and filter changes for the 4EAT are crucial for longevity, as degradation can lead to shifting issues.
📚 Vehicle History
Brand Heritage
Subaru Heritage:
Fuji Heavy Industries, Ltd. (now Subaru Corporation) has a long history in aviation and engineering, translating into robust and reliable vehicles with a focus on AWD technology.
Model Evolution
Gc Gd Generation:
The 1999 Impreza belongs to the first generation (GC/GF/GM chassis), produced from 1992 to 2000. This generation established the Impreza's identity as a versatile compact car with rally-bred performance potential.
Facelift Impact:
The 1999 model year represents a facelift for the first generation, featuring revised exterior styling (distinctive 'bug eye' headlights were introduced on later models). This facelift refined the aerodynamics and aesthetics.
Production
Production Years:
1992-2000 (First Generation)
Manufacturing Locations:
Primarily Japan (Gunma Plant)
Notable Variants:
GT, WRX, WRX STI (though WRX/STI variants were more prominent in JDM and European markets for this specific year, with US market receiving naturally aspirated models primarily).
🏆 Awards & Recognition
Recognitions
Car And Driver 10Best:
While specific 1999 Impreza models weren't consistently on Car and Driver's 10 Best list, the Subaru Impreza (particularly WRX variants in later years) gained significant recognition for its performance and AWD capabilities.
Ratings
IIHS Ratings:
Refer to specific crash test data for 1999 models; generally performed adequately for the era.
Certifications
Certification:
Factory Service Manuals are the ultimate certification of technical accuracy for vehicle repair.