Lexus IS 2000-2005 Fuel System Specifications
Lexus IS 2000-2005

Lexus IS 2000-2005 Fuel System Specifications

Explore detailed fuel specifications for the 2000-2005 Lexus IS, including fuel type, octane rating, tank capacity, and economy. Ideal for maintenance, troubleshooting, and performance upgrades.

Updated

Overview Specifications

This document provides detailed fuel specifications for the 2000-2005 Lexus IS models. It includes information on fuel types, efficiency, tank capacity, and related technical details. Use this guide to understand the fuel requirements and performance metrics of the vehicle. The sections are organized for easy navigation, and a quick reference table is provided for key specifications.

How to Use

Use the search bar to find specific terms or phrases related to fuel specifications. Keywords like 'fuel type' or 'mileage' will yield relevant results.

Scroll through the sections to explore different aspects of fuel specifications. Click on subsection titles to expand and view detailed points.

Key Specifications

Fuel Type

Premium Unleaded (91+ octane)

Fuel Tank Capacity

17.1 gallons

City Mileage

18-20 MPG

Highway Mileage

25-28 MPG

Combined Mileage

21-23 MPG

Available Specifications

Fuel Types and Requirements

This section covers the types of fuel recommended for the 2000-2005 Lexus IS models, including octane ratings and any specific requirements for optimal performance.

Recommended Fuel Type
  • Premium unleaded gasoline with an octane rating of 91 or higher
  • Regular unleaded gasoline (87 octane) can be used but may reduce performance
  • Ethanol blends up to 10% (E10) are acceptable
  • Avoid using diesel or alternative fuels not specified by the manufacturer
Fuel Additives
  • Use of fuel system cleaners is recommended periodically
  • Avoid additives containing methanol or silicone
  • Lexus-approved additives can enhance performance and longevity
  • Check the owner's manual for specific additive recommendations

Fuel Efficiency and Mileage

This section provides details on the fuel efficiency of the 2000-2005 Lexus IS models, including city and highway mileage estimates, as well as factors affecting fuel economy.

City and Highway Mileage
  • City mileage: Approximately 18-20 MPG
  • Highway mileage: Approximately 25-28 MPG
  • Combined mileage: Approximately 21-23 MPG
  • Actual mileage may vary based on driving conditions and habits
Factors Affecting Fuel Economy
  • Aggressive driving reduces fuel efficiency
  • Proper tire inflation improves mileage
  • Regular maintenance ensures optimal fuel economy
  • Use of air conditioning can slightly decrease mileage

Fuel Tank and Capacity

This section outlines the fuel tank specifications for the 2000-2005 Lexus IS models, including capacity, refueling tips, and safety precautions.

Fuel Tank Capacity
  • Total fuel tank capacity: 17.1 gallons (64.7 liters)
  • Reserve fuel capacity: Approximately 2.5 gallons (9.5 liters)
  • Fuel gauge accuracy may vary slightly
  • Refuel when the low fuel warning light activates
Refueling Tips
  • Always turn off the engine before refueling
  • Use the correct fuel grade for optimal performance
  • Avoid overfilling the tank to prevent spillage
  • Ensure the fuel cap is securely tightened after refueling

Component Specifications

Overview

Type
Gasoline
Configuration
Internal Combustion Engine
Platform
Toyota/Lexus N Platform
Material
High-grade steel and plastic
Location
Rear of vehicle, underbody

Dimensions

Tank Capacity
17.1 gallons (64.7 liters)
Tank Length
40.5 inches (102.9 cm)
Tank Width
24.8 inches (63 cm)
Tank Height
12.6 inches (32 cm)
Filler Neck Diameter
1.5 inches (3.8 cm)
Fuel Line Diameter
0.5 inches (1.27 cm)
Weight When Full
105 lbs (47.6 kg)

Materials

Tank Body
High-density polyethylene
Filler Neck
Stainless steel
Fuel Lines
Reinforced rubber with nylon coating
Fuel Pump
Aluminum housing with plastic components
Fuel Filter
Cellulose and resin composite

Features

Fuel Delivery
  • Sequential multi-port fuel injection
  • High-pressure fuel pump
  • Returnless fuel system
Monitoring
  • Fuel level sensor
  • Low fuel warning system
  • Real-time fuel consumption display
Safety
  • Rollover valve
  • Vapor recovery system
  • Impact-resistant tank design
Efficiency
  • Optimized fuel flow design
  • Aerodynamic tank shape
  • Lightweight materials
Maintenance
  • Easy-access fuel filter
  • Replaceable fuel pump
  • Drain plug for tank cleaning

Safety Features

Structural
  • Crush-resistant tank design
  • Fire-resistant materials
Leak Prevention
  • Double-sealed fuel lines
  • Automatic shutoff valve
Environmental
  • Evaporative emissions control
  • Sealed fuel system

Comfort Features

Refueling
  • Easy-access fuel door
  • Lockable fuel cap
  • Automatic fuel nozzle shutoff
Driving
  • Smooth fuel delivery
  • Quiet operation
  • Stable fuel pressure
Maintenance
  • Easy fuel filter replacement
  • Clear fuel level indicators
  • Durable materials for long life

Accessories

Performance
  • High-flow fuel pump
  • Performance fuel filter
  • Fuel pressure regulator
Protection
  • Fuel tank skid plate
  • Fuel line protectors
  • Locking fuel cap
Monitoring
  • Aftermarket fuel gauge
  • Fuel consumption monitor
  • Diagnostic scan tool

Maintenance

Service interval
Every 30,000 miles or 24 months
Service Items
  • Inspect fuel lines for leaks
  • Replace fuel filter
  • Check fuel pump operation
  • Clean fuel injectors
  • Inspect fuel tank for damage
Maintenance Notes
Use only recommended fuel types and additives

Warranty

Basic
Miles: 50,000
Years: 4
Coverage: Fuel pump and tank
Powertrain
Miles: 70,000
Years: 6
Coverage: Fuel delivery system
Emissions
Miles: 80,000
Years: 8
Coverage: Evaporative emissions components
Corrosion
Miles: Unlimited
Years: 6
Coverage: Fuel tank corrosion

Production Details

Manufacturer
Denso Corporation
Manufacturing Process
  • Injection molding for plastic components
  • Robotic welding for metal parts
  • Precision assembly
Quality Control
Pressure Testing: All tanks tested to 30 psi
Leak Testing: 100% leak detection
Material inspection: X-ray and ultrasonic testing
Sustainability Practices
  • Recycled materials used in tank construction
  • Low-emission manufacturing process
  • Recycling program for old fuel tanks
Production Metrics
Annual Production: 500,000 units
Defect Rate: 0.01%
Energy Efficiency: 95% recycled energy in production

Service Information for fuel Service

Maintenance and service requirements specific to the fuel system

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

Use only manufacturer-approved replacement parts

60,000
48
  • Replace fuel filter
  • Clean fuel injectors
  • Inspect and clean fuel tank
  • Check evaporative emissions system
  • Test fuel pressure regulator

Special tools required for fuel system diagnostics

100,000
84
  • Replace fuel pump assembly
  • Inspect and replace fuel lines if necessary
  • Perform complete fuel system flush
  • Replace fuel pressure regulator
  • Test entire fuel system for leaks

Major service requiring specialized equipment and training

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What type of fuel is recommended for a 2000-2005 Lexus IS?

The 2000-2005 Lexus IS models are designed to run on premium unleaded gasoline with an octane rating of 91 or higher. Using lower octane fuel may result in reduced performance and fuel efficiency. Always refer to the owner's manual for specific fuel requirements and compatibility details to ensure optimal engine performance and longevity.

Q2

What are the maintenance requirements for the fuel system in a 2000-2005 Lexus IS?

Regular maintenance of the fuel system includes inspecting and replacing the fuel filter every 30,000 to 40,000 miles, checking fuel injectors for clogs, and ensuring the fuel pump operates correctly. Additionally, using fuel system cleaners periodically can help maintain injector performance. Always follow the maintenance schedule outlined in the owner's manual for best results.

Q3

How do I replace the fuel filter in a 2000-2005 Lexus IS?

To replace the fuel filter, first, relieve the fuel system pressure by disconnecting the fuel pump fuse and running the engine until it stalls. Locate the fuel filter, typically under the car near the fuel tank. Disconnect the fuel lines and mounting bolts, then remove the old filter. Install the new filter, reconnect the fuel lines, and secure it with the mounting bolts. Finally, reconnect the fuel pump fuse and start the engine to check for leaks.

Q4

What should I do if my 2000-2005 Lexus IS has poor fuel economy?

Poor fuel economy can result from several issues, including clogged fuel injectors, a dirty air filter, or improper tire pressure. Start by checking and replacing the air filter, ensuring tires are inflated to the recommended pressure, and using a fuel system cleaner. If the issue persists, inspect the oxygen sensors, spark plugs, and fuel injectors for potential problems.

Q5

How can I optimize the fuel efficiency of my 2000-2005 Lexus IS?

To optimize fuel efficiency, maintain proper tire pressure, use premium unleaded gasoline, and avoid aggressive driving habits. Regularly replace air filters, spark plugs, and fuel filters as recommended. Additionally, ensure the engine is properly tuned and consider using fuel additives to clean the fuel system. These steps will help maximize 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.

2000-2005 Lexus IS Owner's Manual

Coming Soon

Comprehensive guide covering vehicle operation, maintenance schedules, and technical specifications for the 2000-2005 Lexus IS.

Lexus IS Technical Service Bulletin (TSB)

Coming Soon

Collection of technical service bulletins addressing common issues and updates for the 2000-2005 Lexus IS models.

Lexus IS Parts and Accessories Catalog

Coming Soon

Detailed catalog of genuine Lexus parts and accessories compatible with the 2000-2005 Lexus IS models.

About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

ASE Master Certified Technician with over a decade of hands-on experience in automotive repair and diagnostics.

15+ Years
Experience
500+ Guides
Guides
50+ Makes
Vehicles
1000+ Solutions
Solutions

Diagnostic

Specialized in advanced diagnostic techniques using modern scan tools and oscilloscopes.

Repair

Expert in both traditional mechanical repairs and modern vehicle systems.

Additional Expertise

Documentation

Created over 500 detailed repair guides and technical documents.

Training

Conducted technical training sessions and contributed to repair databases.

Certifications & Research

Certifications

  • ASE Master Technician Certification
  • Advanced Diagnostic Specialist
  • Hybrid/Electric Vehicle Systems
  • Performance Tuning Expert

Research & Community

Actively researches emerging technologies and contributes to automotive forums.

Legal Disclaimer

Important information about using this content

Always refer to your vehicle's service manual and take appropriate safety precautions when performing any maintenance or repairs.

General Information
The information provided on this website is for general informational purposes only. While we strive to maintain accuracy in our content, all specifications, procedures, and technical information should be verified against your vehicle's official service manual or with the manufacturer directly.
Warranty & Liability

The content on this website is provided "as is" without any representations or warranties, express or implied. We make no representations or warranties regarding the accuracy, completeness, or availability of the information.

We shall not be liable for any direct, indirect, special, or consequential damages arising from the use of information on this website.

Technical Information
  • All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
  • Vehicle specifications and procedures may vary by model year, trim level, and region.
  • Always follow the manufacturer's recommended procedures and safety precautions.
  • Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
  • If you're unsure about any procedure, consult a qualified professional mechanic.
Intellectual Property
All content, including text, images, and specifications, is protected by copyright and other intellectual property laws. Any unauthorized use or reproduction is prohibited.

© 2025 Lexus Specs. All rights reserved.