Audi Audi S8 1996-2011 Fuel System Specifications
Audi Audi S8 1996-2011

Audi Audi S8 1996-2011 Fuel System Specifications

Detailed technical specifications and documentation for the fuel system of the 1996-2011 Audi S8. Includes fuel requirements, system components, maintenance, and troubleshooting.

Updated

Overview Specifications

Comprehensive description of the fuel specifications for the 1996-2011 Audi S8, 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.

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 precise results.

Navigate through the fuel documentation sections using the table of contents. Each major section is divided into subsections for easy access to specific details.

Key Specifications

Fuel Tank Capacity

90 liters (23.8 gallons)

Minimum Octane Rating

91 (RON 95)

Fuel Injector Pressure

3.5 bar (50.8 psi)

Combined Fuel Consumption

10.8 L/100 km (21.8 mpg)

Fuel Pump Flow Rate

1.5 L/min (0.4 gpm)

Available Specifications

Fuel Requirements

This section covers the recommended fuel types, octane ratings, and additives for the 1996-2011 Audi S8 to ensure optimal engine performance and longevity.

Recommended Fuel Type
  • Premium unleaded gasoline with a minimum octane rating of 91 (RON 95)
  • Do not use gasoline with a methanol content exceeding 10%
  • Avoid using leaded gasoline to prevent damage to the catalytic converter
  • Use fuel additives only if approved by Audi
Octane Rating and Performance
  • Minimum octane rating: 91 (RON 95)
  • Optimal octane rating: 98 (RON 93) for enhanced performance
  • Lower octane fuels may cause engine knocking and reduced efficiency
  • Higher octane fuels improve combustion efficiency and power output

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

Fuel System Components

Detailed information on the fuel system components, including the fuel tank, fuel pump, injectors, and sensors, along with their specifications and maintenance requirements.

Fuel Tank and Capacity
  • Fuel tank capacity: 90 liters (23.8 gallons)
  • Material: High-density polyethylene (HDPE) for durability
  • Includes an integrated fuel level sensor
  • Designed for minimal fuel evaporation and emissions
Fuel Injection System
  • Direct fuel injection system with multi-point injection
  • Injector pressure: 3.5 bar (50.8 psi)
  • Electronically controlled injectors for precise fuel delivery
  • Self-diagnostic system for detecting injector malfunctions

Note: Regularly inspect injectors for clogging or wear.

Fuel Consumption and Efficiency

This section provides detailed information on fuel consumption rates, efficiency metrics, and factors affecting fuel economy for the 1996-2011 Audi S8.

Fuel Consumption Rates
  • City driving: 14.7 L/100 km (16 mpg)
  • Highway driving: 8.5 L/100 km (27.7 mpg)
  • Combined fuel consumption: 10.8 L/100 km (21.8 mpg)
  • Fuel efficiency varies based on driving conditions and load
Factors Affecting Fuel Economy
  • Aggressive driving reduces fuel efficiency by up to 33%
  • Proper tire inflation improves fuel economy by 3%
  • Regular maintenance of air filters and spark plugs enhances efficiency
  • Use of air conditioning increases fuel consumption by 10-20%

Note: Eco-driving techniques can significantly improve fuel efficiency.

Fuel System Maintenance

Guidelines for maintaining the fuel system, including inspection intervals, cleaning procedures, and troubleshooting common issues.

Inspection and Cleaning
  • Inspect fuel lines and connections every 30,000 km (18,640 miles)
  • Clean fuel injectors every 50,000 km (31,070 miles)
  • Check fuel filter condition during routine maintenance
  • Replace fuel pump if flow rate drops below 1.5 L/min (0.4 gpm)
Troubleshooting Common Issues
  • Engine misfires may indicate clogged injectors
  • Poor fuel economy can result from a faulty oxygen sensor
  • Fuel odor may indicate a leak in the fuel lines or tank
  • Hard starting issues may be caused by a failing fuel pump

Note: Always use Audi-approved replacement parts for repairs.

Component Specifications

Fuel Type

Recommended Fuel
Premium unleaded gasoline (95 RON or higher)
Minimum Octane Rating
91 RON
Ethanol Content
Maximum 10% (E10)
Notes
Using lower octane fuel may result in reduced performance and increased engine knocking.

Fuel Tank

Capacity
90 liters
Material
High-density polyethylene (HDPE)
Part Number
4E0201101A
Pressure Rating
3.5 bar
Notes
Includes integrated fuel pump and level sensor.

Fuel Pump

Type
Electric in-tank fuel pump
Flow Rate
120 liters/hour at 3 bar
Operating Pressure
3.0 - 5.0 bar
Part Number
4E0919051B
Voltage
12V DC
Notes
Includes fuel filter and pressure regulator.

Fuel injectors

Type
Multi-hole solenoid injectors
Flow Rate
200 cc/min at 3 bar
Operating Pressure
3.0 - 5.0 bar
Part Number
06E906036C
Spray Pattern
4-hole
Notes
Direct injection system for precise fuel delivery.

Fuel Filter

Type
In-line replaceable cartridge
Micron Rating
10 microns
Part Number
4E0201511A
Replacement interval
Every 60,000 miles or 60 months
Notes
Located under the vehicle near the fuel tank.

Fuel Pressure Sensor

Type
Piezoresistive sensor
Operating Range
0 - 6 bar
Output Signal
0.5 - 4.5V
Part Number
06E906051K
Notes
Monitors fuel rail pressure for engine control unit (ECU) feedback.

Fuel Rail

Material
Stainless steel
Pressure Rating
6 bar
Part Number
06E133201H
Notes
Distributes fuel to injectors at high pressure.

Fuel System Diagnostics

Diagnostic Trouble Codes
  • P0171 - System too lean
  • P0172 - System too rich
  • P0190 - Fuel rail pressure sensor circuit malfunction
Diagnostic Tool
Audi VAS 5051 or equivalent
Notes
Use manufacturer-approved diagnostic tools for accurate troubleshooting.

Fuel System Maintenance

inspection Interval
Every 30,000 miles or 30 months
Maintenance Items
  • Check fuel lines for leaks or damage
  • Inspect fuel pump and filter for contamination
  • Verify fuel pressure and injector operation
Notes
Regular maintenance ensures optimal fuel system performance.

Fuel System Safety

Fire Hazard
Highly flammable
Safety Precautions
  • Avoid open flames or sparks near fuel system components
  • Depressurize fuel system before servicing
  • Use approved containers for fuel storage
Notes
Follow all safety guidelines outlined in the Audi service manual.

Service Information Service

Detailed service requirements and schedules for the fuel system

30,000 miles
30 months
  • Inspect fuel lines and connections
  • Check fuel filter condition
  • Verify fuel pressure readings

Perform visual inspection and functional checks.

60,000 miles
60 months
  • Replace fuel filter
  • Inspect fuel pump operation
  • Clean fuel injectors

Replace components as necessary to maintain system integrity.

90,000 miles
90 months
  • Check fuel tank for leaks or damage
  • Inspect fuel rail and injectors
  • Perform full system diagnostic

Comprehensive inspection and testing required.

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What type of fuel is recommended for the 1996-2011 Audi S8?

The 1996-2011 Audi S8 requires premium unleaded gasoline with an octane rating of 91 or higher (RON 95 or higher). Using lower-octane fuel may result in reduced performance and engine knocking.

Q2

Can I use ethanol-blended fuel in my Audi S8?

The 1996-2011 Audi S8 is compatible with fuel containing up to 10% ethanol (E10). Higher ethanol blends (e.g., E15 or E85) are not recommended as they can cause damage to the fuel system and engine components.

Q3

What is the fuel tank capacity of the Audi S8?

The fuel tank capacity for the 1996-2011 Audi S8 is approximately 90 liters (23.8 gallons). Always refer to the owner's manual for precise specifications based on your model year.

Q4

What is the fuel consumption of the Audi S8?

The fuel consumption varies by model year and driving conditions. On average, the 1996-2011 Audi S8 achieves approximately 12-15 mpg in the city and 18-22 mpg on the highway. Actual mileage may vary based on driving habits and maintenance.

Q5

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

If you accidentally use fuel with an octane rating below 91 or a high-ethanol blend, do not start the engine. Contact an authorized Audi service center immediately to drain and flush the fuel system to prevent potential 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 S8 Owner's Manual (1996-2011)

Coming Soon

Official owner's manual providing detailed fuel specifications, maintenance schedules, and safety information for the Audi S8.

Audi Fuel System Maintenance Guide

Coming Soon

Comprehensive guide on maintaining the fuel system, including fuel filter replacement and injector cleaning procedures.

Audi Genuine Parts Catalog

Coming Soon

Catalog of genuine Audi fuel system components, including fuel pumps, filters, and injectors, to ensure optimal performance and warranty compliance.

Audi Technical Service Bulletins (TSBs)

Coming Soon

Access to technical service bulletins related to fuel system updates, recalls, and common issues for the 1996-2011 Audi S8.

About the Author

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Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

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