Subaru Subaru Impreza 2000-2007 Fuel System Specifications
Subaru Subaru Impreza 2000-2007

Subaru Subaru Impreza 2000-2007 Fuel System Specifications

Explore detailed fuel specifications for the 2000-2007 Subaru Impreza, including fuel type, octane rating, fuel system components, and fuel economy. Ideal for maintenance, repairs, and performance upgrades.

Updated

Overview Specifications

This document provides detailed fuel specifications for the 2000-2007 Subaru Impreza. It includes information on fuel types, fuel economy, tank capacity, and emissions. Use this guide to understand the technical aspects of the vehicle's fuel system and optimize performance. The document is organized into sections for easy navigation and includes a quick reference table for key specifications.

How to Use

Use the search functionality to quickly locate specific fuel-related terms or specifications. Enter keywords like 'fuel economy' or 'tank capacity' to find relevant information.

Navigate through the document using the section titles and subsections. Each section is labeled clearly, and subsections provide detailed points for easy reference.

Key Specifications

Fuel Type

Regular/Premium Unleaded

Fuel Tank Capacity

15.9 gallons

City MPG

20-22 MPG

Highway MPG

26-28 MPG

Emissions Standard

ULEV/Tier 2 Bin 5

Available Specifications

Fuel Types and Requirements

This section covers the types of fuel recommended for the 2000-2007 Subaru Impreza, including octane ratings and any specific requirements for optimal performance.

Recommended Fuel Types
  • Regular unleaded gasoline (87 octane)
  • Premium unleaded gasoline (91 octane or higher) for turbocharged models
  • Ethanol blends up to 10% (E10) are acceptable
  • Avoid using diesel or alternative fuels
Fuel Additives
  • Use of fuel system cleaners is optional
  • Avoid additives containing methanol
  • Subaru recommends OEM-approved additives for maintenance
  • Check owner's manual for specific recommendations

Fuel Economy

This section provides details on the fuel efficiency of the 2000-2007 Subaru Impreza, including city, highway, and combined MPG ratings.

MPG Ratings
  • City: 20-22 MPG
  • Highway: 26-28 MPG
  • Combined: 23-25 MPG
  • Turbocharged models may have slightly lower MPG
Factors Affecting Fuel Economy
  • Driving habits (aggressive driving reduces MPG)
  • Vehicle maintenance (clean air filters improve efficiency)
  • Tire pressure (underinflated tires decrease MPG)
  • Environmental conditions (cold weather reduces MPG)

Fuel Tank and Capacity

This section outlines the fuel tank specifications, including capacity and design features, for the 2000-2007 Subaru Impreza.

Fuel Tank Capacity
  • Standard fuel tank capacity: 15.9 gallons (60.2 liters)
  • Reserve capacity: approximately 2.5 gallons (9.5 liters)
  • Fuel gauge accuracy may vary slightly
  • Tank material: high-density polyethylene
Fuel Tank Design
  • Designed for durability and corrosion resistance
  • Includes a fuel vapor recovery system
  • Equipped with a rollover valve for safety
  • Filler neck designed to prevent misfueling

Emissions and Environmental Impact

This section discusses the emissions standards and environmental impact of the 2000-2007 Subaru Impreza, including compliance with regulations.

Emissions Standards
  • Complies with ULEV (Ultra Low Emission Vehicle) standards
  • Equipped with a catalytic converter
  • OBD-II (On-Board Diagnostics) system monitors emissions
  • Meets EPA Tier 2 Bin 5 standards
Environmental Considerations
  • Lower CO2 emissions compared to larger vehicles
  • Designed for recyclability at end of life
  • Use of eco-friendly materials in fuel system components
  • Regular maintenance reduces environmental impact

Component Specifications

Overview

Type
Gasoline
Configuration
Multi-port fuel injection
Platform
Subaru EJ series engine
Material
High-density polyethylene (HDPE) fuel tank
Location
Rear axle, underbody

Dimensions

Fuel Tank Capacity
15.9 gallons (60.2 liters)
Fuel Line Diameter
0.375 inches (9.525 mm)
Fuel Pump Pressure
43.5 psi (300 kPa)
Fuel Filter Size
2.5 inches x 1.5 inches (63.5 mm x 38.1 mm)
Fuel injector Flow Rate
280 cc/min
Fuel Tank Length
28.5 inches (723.9 mm)
Fuel Tank Width
18.7 inches (475 mm)
Fuel Tank Height
10.2 inches (259.1 mm)

Materials

Fuel Tank
High-density polyethylene (HDPE)
Fuel Lines
Nitrile rubber with steel reinforcement
Fuel Pump
Stainless steel and plastic composite
Fuel injectors
Aluminum alloy with stainless steel nozzles

Features

Fuel Delivery
  • Multi-port fuel injection
  • Sequential fuel injection
  • Returnless fuel system
Fuel Tank
  • Molded baffles for fuel slosh reduction
  • Integrated fuel pump module
  • Rollover safety valve
Fuel Pump
  • High-pressure electric fuel pump
  • In-tank design for cooling
  • Integrated fuel level sensor
Fuel injectors
  • 4-hole design for precise fuel atomization
  • O-ring sealed for leak prevention
  • Electronically controlled
Emissions
  • Evaporative emissions control system
  • Charcoal canister for fuel vapor storage
  • OBD-II compliant fuel system monitoring

Safety Features

Fuel Tank Safety
  • Impact-resistant HDPE construction
  • Rollover valve to prevent fuel spillage
  • Flame arrestor in fuel filler neck
Fuel Leak Prevention
  • Double-walled fuel lines
  • O-ring sealed connections
  • Pressure relief valve in fuel pump

Comfort Features

Fuel Efficiency
  • Optimized fuel injector spray pattern
  • Lightweight fuel tank design
  • Aerodynamic underbody fuel tank placement
Refueling
  • Easy-access fuel filler door
  • Capless fuel filler system (2006-2007 models)
  • Fuel tank venting system for fast refueling

Accessories

Fuel System Upgrades
  • High-flow fuel pump
  • Performance fuel injectors
  • Aftermarket fuel pressure regulator
Fuel Tank Accessories
  • Fuel tank skid plate
  • Fuel tank insulation kit
  • Extended range fuel tank
Maintenance Tools
  • Fuel pressure tester
  • Fuel injector cleaning kit
  • Fuel line disconnect tool

Maintenance

Service interval
Every 30,000 miles or 24 months
Service Items
  • Replace fuel filter
  • Inspect fuel lines for leaks
  • Clean fuel injectors
  • Check fuel pump pressure
  • Inspect fuel tank for damage
Maintenance Notes
Use only unleaded gasoline with a minimum octane rating of 87 (AKI). Avoid ethanol blends above 10% to prevent fuel system damage.

Warranty

Basic Warranty
Miles: 36,000
Years: 3
Coverage: Fuel system components excluding wear items
Powertrain Warranty
Miles: 60,000
Years: 5
Coverage: Fuel pump and injectors
Emissions Warranty
Miles: 80,000
Years: 8
Coverage: Evaporative emissions system
Corrosion Warranty
Miles: Unlimited
Years: 5
Coverage: Fuel tank corrosion perforation

Production Details

Manufacturer
Subaru Corporation
Manufacturing Process
  • Injection molding for fuel tank
  • CNC machining for fuel injectors
  • Robotic assembly for fuel pump modules
Quality Control
Pressure Testing: Fuel tank and lines tested at 1.5x operating pressure
Leak Testing: Helium leak detection for all fuel system components
Durability Testing: Simulated 150,000 miles of fuel system operation
Sustainability Practices
  • Recycled HDPE material in fuel tank
  • Low-VOC fuel system components
  • Closed-loop manufacturing for fuel injectors
Production Metrics
Annual Production: Approximately 500,000 fuel systems
Defect Rate: Less than 0.01%
Energy Efficiency: 15% reduction in manufacturing energy use since 2000

Service Information for fuel Service

Maintenance and service requirements specific to the fuel system

30,000
24
  • Replace fuel filter
  • Inspect fuel lines and connections
  • Check fuel pump pressure
  • Test fuel injector operation
  • Inspect fuel tank for damage or leaks

Use only OEM or equivalent fuel filter to maintain proper flow rates

60,000
48
  • Clean fuel injectors
  • Inspect fuel pump operation
  • Check fuel tank vent system
  • Test evaporative emissions system
  • Inspect fuel filler neck and cap

Special fuel system cleaner recommended for injector cleaning

100,000
84
  • Replace fuel pump assembly
  • Inspect and replace fuel lines if necessary
  • Test fuel pressure regulator
  • Perform complete fuel system diagnostic
  • Replace fuel tank if corrosion is detected

Fuel pump replacement requires special tools and procedures

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What type of fuel is recommended for the 2000-2007 Subaru Impreza?

The 2000-2007 Subaru Impreza is designed to run on unleaded gasoline with an octane rating of 87 or higher. Using premium fuel (91 octane or higher) is not required but may improve performance in certain conditions. Avoid using diesel, E85, or any fuel with more than 10% ethanol, as it can damage the engine and fuel system components.

Q2

How often should I replace the fuel filter on my Subaru Impreza?

The fuel filter on a 2000-2007 Subaru Impreza should be replaced every 30,000 to 60,000 miles, depending on driving conditions and fuel quality. Regular replacement ensures optimal fuel flow and prevents contaminants from reaching the engine. Check your owner's manual for specific recommendations and consult a professional mechanic if you notice reduced performance or fuel efficiency.

Q3

How do I replace the fuel pump on a 2000-2007 Subaru Impreza?

To replace the fuel pump, first, disconnect the battery and relieve fuel system pressure. Remove the rear seat cushion to access the fuel pump assembly. Disconnect the electrical connectors and fuel lines, then unscrew the retaining ring. Carefully lift out the old pump, replace it with a new one, and reassemble in reverse order. Always refer to the service manual for detailed instructions and safety precautions.

Q4

What should I do if my Subaru Impreza has trouble starting or stalls frequently?

If your Impreza has trouble starting or stalls, check the fuel system for issues. Inspect the fuel pump, fuel filter, and fuel injectors for clogs or malfunctions. Ensure the battery and alternator are functioning properly. If the problem persists, use an OBD-II scanner to check for error codes and consult a professional mechanic for further diagnosis and repair.

Q5

How can I improve the fuel efficiency of my Subaru Impreza?

To improve fuel efficiency, maintain proper tire pressure, use the recommended grade of motor oil, and replace air filters regularly. Avoid aggressive driving and excessive idling. Ensure the fuel system is clean and free of deposits. Consider using a fuel system cleaner periodically. Regular maintenance, such as tuning the engine and replacing spark plugs, can also enhance performance and fuel economy.

Factory Service Resources

Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.

2000-2007 Subaru Impreza Service Manual

Coming Soon

Comprehensive guide covering maintenance, repairs, and technical specifications for the 2000-2007 Subaru Impreza.

Subaru Technical Service Bulletin: Fuel System Updates

Coming Soon

Details updates and fixes for common fuel system issues in the 2000-2007 Subaru Impreza.

Subaru Impreza Parts and Accessories Catalog

Coming Soon

Official catalog listing genuine parts and accessories for the 2000-2007 Subaru Impreza.

About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

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