Audi Audi S4 2009-2016

Audi Audi S4 2009-2016 Fuel System Specifications

Detailed technical specifications and guidelines for the fuel system of the 2009-2016 Audi S4. Learn about fuel type requirements, fuel delivery system components, and maintenance tips for optimal performance.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the fuel specifications for the 2009-2016 Audi S4, including key features, measurements, and technical details

How to Use

Use the search function to locate specific fuel specifications by entering keywords such as 'octane rating', 'fuel capacity', or 'emission standards'.

Navigate through the fuel documentation sections using the table of contents or by scrolling through the document. Each section is labeled with a clear title for easy reference.

Key Specifications

Octane Rating

91 AKI (95 RON) or higher

Fuel Tank Capacity

65 liters (17.2 gallons)

Fuel Pump Pressure

5.8 bar (84 psi)

CO2 Emissions

230 g/km

Fuel Efficiency (Combined)

22 mpg (10.7 L/100 km)

Available Specifications

Fuel Type and Quality

Details about the recommended fuel type, quality standards, and performance requirements for the Audi S4

Recommended Fuel Type

Premium unleaded gasoline with an octane rating of 91 AKI (95 RON) or higher
Lower octane fuels may be used but can result in reduced performance and efficiency
Ethanol blends up to E10 (10% ethanol) are acceptable
Avoid using diesel, kerosene, or other non-gasoline fuels

Fuel Quality Standards

Complies with EN 228 European fuel standards
Must meet ASTM D4814 specifications for gasoline
Free from contaminants such as water, dirt, or metal particles
Use of additives is not required but must not exceed manufacturer recommendations

Note: Using substandard fuel may void the vehicle's warranty.

Fuel System Specifications

Technical details about the fuel system, including capacity, pressure, and component specifications

Fuel Tank Capacity

Total fuel tank capacity: 65 liters (17.2 gallons)
Reserve fuel capacity: 8 liters (2.1 gallons)
Fuel tank material: High-density polyethylene (HDPE)
Fuel tank design: Integrated baffles to prevent sloshing

Fuel Delivery System

Direct fuel injection system with multi-port injectors
Fuel pump pressure: 5.8 bar (84 psi)
Fuel filter replacement interval: Every 60,000 miles or 5 years
Fuel lines: Stainless steel with corrosion-resistant coating

Note: Regular maintenance of the fuel system is critical for optimal performance.

Emission and Efficiency

Information about fuel efficiency, emissions standards, and environmental compliance

Fuel Efficiency

City driving: 18 mpg (13.1 L/100 km)
Highway driving: 28 mpg (8.4 L/100 km)
Combined fuel efficiency: 22 mpg (10.7 L/100 km)
CO2 emissions: 230 g/km

Emission Standards

Complies with Euro 5 emission standards
Equipped with a catalytic converter and oxygen sensors
Onboard diagnostics (OBD-II) for emission monitoring
Particulate filter not required for gasoline engines

Note: Regular emission 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)

Alternative Fuel: Regular unleaded gasoline (87 AKI or 91 RON) with reduced performance

Ethanol Content: Up to 10% ethanol (E10) allowed

Notes: Using fuel with higher ethanol content may cause engine damage and void warranty

Fuel Tank

Capacity: 16.9 gallons (64 liters)

Material: High-density polyethylene (HDPE)

Part Number: 8K0201101A

Pressure Rating: 3.6 psi (25 kPa)

Notes: Includes integrated fuel pump and level sensor

Fuel Pump

Type: Electric in-tank fuel pump

Flow Rate: 120 liters per hour (L/h) at 5 bar

Operating Pressure: 5 bar (72.5 psi)

Voltage: 12V DC

Part Number: 8K0919051B

Notes: Includes fuel filter and pressure regulator

Fuel injectors

Type: Direct injection (FSI)

Flow Rate: 200 cc/min at 3 bar

Operating Pressure: 100-150 bar (1450-2175 psi)

Part Number: 06E906036C

Notes: High-pressure injectors for precise fuel delivery

Fuel Filter

Type: Integrated with fuel pump module

Micron Rating: 10 microns

Replacement interval: Every 40,000 miles or 48 months

Part Number: 8K0919051B

Notes: Non-serviceable, replace entire fuel pump module if clogged

Fuel Pressure Sensor

Type: High-pressure sensor

Operating Range: 0-200 bar (0-2900 psi)

Output Signal: 0.5-4.5V

Part Number: 06E906051K

Notes: Monitors fuel rail pressure for engine control unit (ECU)

Fuel Rail

Material: Stainless steel

Pressure Rating: 200 bar (2900 psi)

Part Number: 06E133201H

Notes: Includes integrated pressure sensor and injector ports

Fuel System Capacity

Total System Capacity: 18.5 liters (4.9 gallons)

Usable Capacity: 16.9 liters (4.5 gallons)

Reserve Capacity: 1.6 liters (0.4 gallons)

Notes: Reserve capacity activates low fuel warning light

Fuel System Maintenance

injector Cleaning Interval: Every 30,000 miles or 36 months

Fuel System Flush interval: Every 60,000 miles or 72 months

Notes: Use Audi-approved fuel system cleaner (part number: G001780M3)

Fuel System Diagnostics

Diagnostic Tool: VAS 5054A or equivalent

Fault Codes

P0171 - System too lean
P0172 - System too rich
P0087 - Fuel rail/system pressure too low
P0088 - Fuel rail/system pressure too high

Notes: Perform fuel pressure and injector flow tests if fault codes are present

Fuel System Service Information Service

Detailed service requirements and schedules for the fuel system

10,000 miles

12 months

Inspect fuel lines and connections for leaks
Check fuel pressure and injector operation
Verify fuel filter condition

Use Audi-approved diagnostic tools for testing

30,000 miles

36 months

Clean fuel injectors
Inspect fuel pump and pressure sensor
Replace fuel system cleaner additive

Follow Audi service manual procedures for injector cleaning

60,000 miles

72 months

Perform fuel system flush
Replace fuel pump module if necessary
Inspect and test fuel rail pressure

Use only Audi-approved replacement parts

Frequently Asked Questions

Find answers to common questions about torque specifications

What type of fuel is recommended for the 2009-2016 Audi S4?

The 2009-2016 Audi S4 requires premium unleaded gasoline with an octane rating of 91 AKI (Anti-Knock Index) or higher. Using lower octane fuel may result in reduced performance and potential engine knocking.

Can I use ethanol-blended fuel in my Audi S4?

Yes, the Audi S4 can use ethanol-blended fuels containing up to 10% ethanol (E10). However, fuels with higher ethanol concentrations (e.g., E15 or E85) are not recommended as they can damage the fuel system and void the warranty.

What is the fuel tank capacity of the 2009-2016 Audi S4?

The fuel tank capacity of the 2009-2016 Audi S4 is 16.9 gallons (64 liters). This allows for a driving range of approximately 400-500 miles depending on driving conditions and fuel efficiency.

What is the fuel economy of the Audi S4?

The 2009-2016 Audi S4 achieves an EPA-estimated fuel economy of 18 mpg in the city and 28 mpg on the highway. Actual mileage may vary based on driving habits, road conditions, and maintenance.

Does the Audi S4 require any fuel additives?

Audi does not recommend the use of fuel additives for the S4. The vehicle is designed to operate efficiently with premium unleaded gasoline. Using additives may affect performance and could void the warranty.

What should I do if I accidentally use the wrong type of fuel?

If you accidentally use fuel with an octane rating below 91 AKI or a high-ethanol blend, avoid driving the vehicle and contact an Audi service center immediately. Running the engine with improper fuel can cause severe damage.

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 Fuel System Maintenance Guide

Coming Soon

Learn about proper fuel system maintenance, including fuel filter replacement and injector cleaning, to ensure optimal performance.

Understanding Octane Ratings

Coming Soon

A detailed explanation of octane ratings and their importance for high-performance engines like the Audi S4.

Audi Warranty and Fuel Requirements

Coming Soon

Understand how using the correct fuel type impacts your Audi S4's warranty coverage and what to do in case of fuel-related issues.

Ethanol-Blended Fuels and Your Audi

Coming Soon

Explore the effects of ethanol-blended fuels on your Audi S4's engine and fuel system, including best practices for fuel selection.

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