Audi Audi RS4 2005-2008

Audi Audi RS4 2005-2008 Fuel System Specifications

Comprehensive technical guide for the 2005-2008 Audi RS4 fuel system, including detailed specifications, maintenance tips, and troubleshooting procedures.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the fuel specifications for the 2005-2008 Audi RS4, including key features, measurements, and technical details. This section provides detailed information on fuel requirements, system components, and performance specifications to ensure optimal operation and maintenance of the vehicle.

How to Use

Use the search function to locate specific fuel specifications by entering keywords such as 'octane rating', 'fuel capacity', or 'injection system'. Use exact terms for best results.

Navigate through the fuel documentation sections using the table of contents. Each major section is divided into subsections for detailed technical information.

Key Specifications

Fuel Tank Capacity

62 liters (16.4 gallons)

Recommended Octane Rating

91 (RON) minimum

Fuel Injection Pressure

100 bar (1450 psi)

Combined Fuel Economy

11.2 L/100 km (21 mpg)

CO2 Emissions

266 g/km

Available Specifications

Fuel Requirements

This section covers the recommended fuel types, octane ratings, and additives for the 2005-2008 Audi RS4.

Recommended Fuel Type

Premium unleaded gasoline with a minimum octane rating of 91 (RON)
Do not use fuel with a methanol content exceeding 3%
Avoid using leaded gasoline or diesel fuel
Use fuel additives only if approved by Audi

Octane Rating and Performance

Optimal performance achieved with 93 (RON) octane fuel
Lower octane fuel may result in reduced engine performance
Engine knock sensor adjusts timing for lower octane fuel
Fuel economy may decrease with lower octane ratings

Note: Using fuel with an octane rating below 91 (RON) may void the warranty.

Fuel System Components

Detailed information on the fuel system components, including the fuel tank, fuel pump, and injection system.

Fuel Tank Specifications

Fuel tank capacity: 62 liters (16.4 gallons)
Material: High-density polyethylene (HDPE)
Includes integrated fuel level sensor
Designed for crash safety and leak prevention

Fuel Injection System

Direct fuel injection (FSI) system
Injection pressure: 100 bar (1450 psi)
Six-hole injectors for precise fuel delivery
Electronically controlled for optimal air-fuel ratio

Note: Regular maintenance of the fuel injectors is required to prevent clogging.

Fuel Consumption and Emissions

This section provides details on fuel consumption rates and emissions standards for the 2005-2008 Audi RS4.

Fuel Consumption Rates

City driving: 14.7 L/100 km (16 mpg)
Highway driving: 9.4 L/100 km (25 mpg)
Combined fuel economy: 11.2 L/100 km (21 mpg)
Fuel consumption may vary based on driving conditions

Emissions Compliance

Complies with Euro 4 emissions standards
Equipped with catalytic converters and oxygen sensors
CO2 emissions: 266 g/km
Includes onboard diagnostics (OBD) for emissions monitoring

Note: Regular emissions system checks are recommended to maintain compliance.

Search Specifications

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Component Specifications

Fuel Type

Recommended Fuel: Premium unleaded gasoline (91 AKI or 95 RON minimum)

Octane Rating: 91 AKI (Anti-Knock Index) or 95 RON (Research Octane Number)

Ethanol Content: Maximum 10% ethanol (E10)

Note: Using lower octane fuel may result in reduced performance and engine knocking

Fuel Tank

Capacity: 16.4 gallons (62 liters)

Material: High-density polyethylene (HDPE)

Part Number: 8E0201101A

Pressure Rating: 3.6 psi (25 kPa)

Note: Includes integrated fuel pump and level sensor

Fuel Pump

Type: Electric in-tank fuel pump

Flow Rate: 150 liters per hour (LPH) at 5 bar

Operating Pressure: 5 bar (72.5 psi)

Voltage: 12V DC

Part Number: 8E0919051B

Note: Includes fuel filter and pressure regulator

Fuel injectors

Type: Multi-hole solenoid injectors

Flow Rate: 280 cc/min at 3 bar

Operating Pressure: 3.5 bar (50.8 psi)

Part Number: 06E906031C

Spray Pattern: 6-hole, 30-degree cone

Note: Direct injection system for precise fuel delivery

Fuel Pressure

Idle Pressure: 3.5 bar (50.8 psi)

Full Load Pressure: 5 bar (72.5 psi)

Tolerance: +/- 0.2 bar

Sensor Part Number: 06A906051K

Note: Monitored by the engine control unit (ECU)

Fuel Filter

Type: In-line fuel filter

Micron Rating: 10 microns

Replacement interval: Every 40,000 miles (64,000 km)

Part Number: 8E0201511A

Note: Integrated into the fuel pump assembly

Fuel System Capacity

Total System Capacity: 17.5 liters (4.6 gallons)

Usable Capacity: 16.4 liters (4.3 gallons)

Reserve Capacity: 1.1 liters (0.3 gallons)

Note: Reserve capacity activates low fuel warning light

Emissions Compliance

Standards: Euro 4 emissions compliant

Carbon Monoxide Limit: 1.0 g/km

Hydrocarbon Limit: 0.1 g/km

Nitrogen Oxide Limit: 0.08 g/km

Note: Includes secondary air injection system for cold starts

Fuel System Diagnostics

Diagnostic Tool: VAG-COM or equivalent

Error Codes

P0171 - System too lean
P0172 - System too rich
P0190 - Fuel rail pressure sensor circuit malfunction

Test Procedures

Check fuel pressure with a gauge
Inspect fuel injectors for clogging
Verify fuel pump operation

Note: Diagnostic trouble codes (DTCs) stored in ECU

Fuel System Maintenance

injector Cleaning Interval: Every 30,000 miles (48,000 km)

Fuel Filter Replacement: Every 40,000 miles (64,000 km)

Fuel Tank Cleaning: As needed, inspect for debris or contamination

Note: Use only Audi-approved cleaning additives

Service Information Service

Detailed service requirements and schedules for the fuel system

30,000 miles

24 months

Inspect fuel injectors
Check fuel pressure
Clean fuel system with approved additive

Perform injector cleaning to maintain optimal performance

40,000 miles

36 months

Replace fuel filter
Inspect fuel lines for leaks
Check fuel pump operation

Replace fuel filter to prevent clogging and ensure proper flow

60,000 miles

48 months

Inspect fuel tank for damage or contamination
Verify emissions system operation
Check fuel pressure sensor

Ensure fuel tank integrity and emissions compliance

Frequently Asked Questions

Find answers to common questions about torque specifications

What type of fuel is recommended for the 2005-2008 Audi RS4?

The 2005-2008 Audi RS4 requires premium unleaded gasoline with an octane rating of 91 AKI (95 RON) or higher. Using lower octane fuel may result in reduced performance and potential engine knocking.

What is the fuel tank capacity of the 2005-2008 Audi RS4?

The fuel tank capacity of the 2005-2008 Audi RS4 is 16.6 gallons (63 liters). This allows for a balance between range and vehicle weight.

Can I use ethanol-blended fuel in the 2005-2008 Audi RS4?

The 2005-2008 Audi RS4 is compatible with ethanol-blended fuels containing up to 10% ethanol (E10). Higher ethanol concentrations (e.g., E15 or E85) are not recommended as they may damage the fuel system and void the warranty.

What is the fuel consumption of the 2005-2008 Audi RS4?

The 2005-2008 Audi RS4 has an estimated fuel consumption of 13 mpg in the city and 20 mpg on the highway. Actual consumption may vary based on driving conditions and style.

Does the 2005-2008 Audi RS4 require fuel additives?

No, the 2005-2008 Audi RS4 does not require fuel additives under normal operating conditions. Using premium fuel with the correct octane rating is sufficient to maintain optimal engine performance.

What happens if I accidentally use diesel fuel in the 2005-2008 Audi RS4?

Using diesel fuel in the 2005-2008 Audi RS4 can cause severe engine damage. If this occurs, do not start the engine. Immediately drain the fuel system and replace it with the correct premium unleaded gasoline. Consult a certified Audi technician for assistance.

Factory Service Resources

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

Audi RS4 Owner's Manual

Coming Soon

The official owner's manual provides detailed information on fuel specifications, maintenance schedules, and safety precautions specific to the 2005-2008 Audi RS4.

Audi Fuel System Maintenance Guide

Coming Soon

A comprehensive guide on maintaining the fuel system, including tips for optimal performance and troubleshooting common issues.

Audi Genuine Parts Catalog

Coming Soon

Access the official catalog for genuine Audi fuel system components, ensuring compatibility and warranty compliance.

Audi Technical Service Bulletins

Coming Soon

Stay updated with the latest technical service bulletins related to the fuel system and other components of the 2005-2008 Audi RS4.

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