Audi Audi A8 2002-2010 Fuel System Specifications
Detailed technical guide for the 2002-2010 Audi A8 fuel system, including fuel type requirements, pump and injector specifications, pressure standards, and maintenance procedures. Essential for technicians and enthusiasts.
Fuel Specifications Overview Specifications
This document provides a comprehensive overview of the fuel specifications for the 2002-2010 Audi A8. It includes detailed information on fuel types, capacities, recommended octane ratings, and fuel efficiency. Use this guide to understand the fuel requirements for your vehicle and to make informed decisions about fuel usage. Navigate through the sections to find specific details or use the search functionality to quickly locate key information.
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To search for specific fuel-related information, use the search bar at the top of the document. Enter keywords such as 'fuel type,' 'octane rating,' or 'fuel capacity' to find relevant details.
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Key Specifications
Fuel Tank Capacity
23.8 gallons (90 liters)
Recommended Fuel Type
91-98 AKI Gasoline / Ultra-low sulfur diesel
City Fuel Economy
14-17 mpg
Highway Fuel Economy
20-31 mpg
Emission Standard
Euro 4 / ULEV II
Available Specifications
Fuel Types and Capacities
This section provides information on the recommended fuel types and fuel tank capacities for the 2002-2010 Audi A8. It also includes details on fuel efficiency and consumption rates.
Fuel Types and Capacities
This section provides information on the recommended fuel types and fuel tank capacities for the 2002-2010 Audi A8. It also includes details on fuel efficiency and consumption rates.
Recommended Fuel Types
- Gasoline: 91-98 AKI (91 octane minimum)
- Diesel: Ultra-low sulfur diesel (ULSD)
- Premium gasoline recommended for optimal performance
- Do not use E85 or other ethanol blends
- Diesel models require DEF (Diesel Exhaust Fluid)
Fuel Tank Capacity
- Gasoline models: 23.8 gallons (90 liters)
- Diesel models: 26.4 gallons (100 liters)
- Reserve capacity: Approximately 3 gallons (14 liters)
- Fuel tank location: Rear of the vehicle
- Fuel gauge accuracy: +/- 0.5 gallons
Fuel Injection and Engine Management
This section details the fuel injection systems and engine management technologies used in the 2002-2010 Audi A8. It includes information on fuel pressure, injectors, and engine control units.
Fuel Injection and Engine Management
This section details the fuel injection systems and engine management technologies used in the 2002-2010 Audi A8. It includes information on fuel pressure, injectors, and engine control units.
Fuel Injection System
- Multi-point fuel injection (MPI) for gasoline models
- Common-rail direct injection (CRDI) for diesel models
- Fuel pressure: 55-65 bar (800-940 psi) for gasoline
- Fuel pressure: 1600-2000 bar (23,000-29,000 psi) for diesel
- Fuel injectors: 6x for V12 models, 4x for V8 models
- Injector replacement interval: Every 50,000 miles
Engine Management System
- Bosch Motronic ME7.1 for gasoline models (2002-2004)
- Bosch MED9.1 for gasoline models (2005-2010)
- Bosch EDC15 for diesel models
- Oxygen sensor: Heated two-wire type
- Mass airflow sensor: Hot-wire type
- Engine control unit (ECU) location: Under the dashboard
Fuel Efficiency and Consumption
This section provides fuel economy estimates and consumption rates for the 2002-2010 Audi A8. It includes city, highway, and combined fuel economy ratings.
Fuel Efficiency and Consumption
This section provides fuel economy estimates and consumption rates for the 2002-2010 Audi A8. It includes city, highway, and combined fuel economy ratings.
Fuel Economy Ratings
- 2002-2004 A8 4.2L V8: 16 mpg city, 23 mpg highway, 19 mpg combined
- 2005-2010 A8 4.2L V8: 17 mpg city, 24 mpg highway, 20 mpg combined
- 2003-2009 A8 6.0L W12: 14 mpg city, 20 mpg highway, 16 mpg combined
- 2006-2010 A8 3.0L V6 TDI: 23 mpg city, 31 mpg highway, 26 mpg combined
- 2007-2010 A8 4.2L V8 TDI: 21 mpg city, 29 mpg highway, 24 mpg combined
Fuel Consumption Factors
- Driving conditions: City driving reduces fuel efficiency by up to 20%
- Highway driving: Steady speeds improve fuel efficiency by up to 15%
- Weather: Extreme temperatures can reduce fuel efficiency by 5-10%
- Load: Towing or carrying heavy loads reduces fuel efficiency by 10-15%
- Maintenance: Proper tire pressure and air filter maintenance improve fuel efficiency
Search Specifications
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Component Specifications
Overview
- Type
- Gasoline Direct Injection
- Configuration
- V8
- Platform
- Audi A8 D3
- Material
- High-Density Polyethylene (HDPE)
- Location
- Under rear of vehicle
- Fuel Capacity
- 23.8 gallons (90 liters)
- Fuel Grade
- Premium Unleaded (91 Octane)
Dimensions
- Tank Capacity
- 23.8 gallons (90 liters)
- Tank Length
- 47.24 inches (1200 mm)
- Tank Width
- 23.62 inches (600 mm)
- Tank Height
- 13.78 inches (350 mm)
- Fuel Line Diameter
- 0.375 inches (9.53 mm)
- Fuel injector Size
- Multi-hole injectors, 0.013 inches (0.33 mm) diameter
- Fuel Pump Flow Rate
- 120 liters per hour (31.7 gallons per hour)
Materials
- Fuel Tank
- High-Density Polyethylene (HDPE)
- Fuel Lines
- Fuel-resistant rubber with internal steel spiral
- Fuel injectors
- Stainless Steel with Titanium internal components
- Fuel Pump
- Stainless Steel and Polymer materials
Features
- Fuel injection Technology
-
- Direct Injection
- Adaptive Fuel Injection Mapping
- Fuel Pressure Regulation
- Fuel Efficiency
-
- Cylinder Deactivation
- Adaptive Cruise Control Integration
- Eco-Mode Fuel Management
- Emissions Control
-
- Catalytic Converter
- Particulate Filter
- Exhaust Gas Recirculation
- Cold Weather Operation
-
- Heated Fuel Lines
- Winter Blend Fuel Compatibility
- Fuel Tank Heater
- Safety Systems
-
- Automatic Fuel Shut-Off
- Fuel Leak Detection
- Pressure Relief Valve
Safety Features
- Automatic Fuel Shut Off
- In case of accident or vehicle rollover
- Multi Layer Fuel Lines
- Prevents fuel leakage and deterioration
- Roll Over Protection
- Vent valve to prevent fuel spillage
Comfort Features
- Noise Reduction
- Acoustic insulation of fuel system components
- Smooth Fuel Flow
- Regulated fuel pressure for consistent engine performance
- Low Emissions
- Reduced emissions for cleaner operation
- Consistent Power Delivery
- Adaptive fuel injection ensures smooth power delivery
Accessories
- Fuel Tank Accessories
-
- Fuel Tank Protection Cover
- Fuel Tank Cleaning Kit
- Fuel Tank Cap with Lock
- Fuel System Accessories
-
- Fuel Injector Cleaning Kit
- Fuel Line Protective Sleeves
- Fuel Pressure Gauge
- Fuel Additives
-
- Premium Fuel Additive Kit
- Anti-Corrosion Fuel Treatment
- Fuel System Cleaner
Maintenance
- Service interval
- Every 15,000 miles (24,140 km) or 12 months
- Maintenance Notes
-
- Inspect fuel lines for signs of wear or damage
- Check fuel injectors for cleanliness and proper operation
- Replace fuel filter as recommended
- Check fuel tank cap for proper sealing
- Service Items
-
- Fuel Filter Replacement
- Fuel Injector Cleaning
- Fuel System Inspection
- Fuel Line Inspection
- Fuel Tank Cap Replacement
Warranty
- New Vehicle Warranty
- Miles: 50000Years: 4Coverage: Bumper-to-Bumper
- Fuel System Components
- Miles: 80000Years: 8Coverage: Longevity Protection
- Maintenance Warranty
- Miles: 10000Years: 1Coverage: Scheduled Maintenance
- Accessories Warranty
- Miles: 10000Years: 1Coverage: Accessories Replacement
Production Details
- Manufacturer
- Audi AG
- Manufacturing Process
-
- Computer-Controlled Welding
- Robotic Assembly
- Laser Cutting
- High-Precision Injection Molding
- Quality Control
- inspection: 100% End-of-Line TestingCertifications: ISO 9001, ISO 14001
- Sustainability Practices
-
- Recycled Materials Usage
- Energy-Efficient Manufacturing
- Emission Reduction Processes
- Production Metrics
- Units Produced: Over 100,000 unitsProduction Cycle: 24/7 Continuous ProductionQuality Rating: 99.9% defect-free rate
Service Information for fuel Service
Maintenance and service requirements specific to this component
- Inspect fuel lines and connections for leaks
- Check fuel filter condition
- Inspect fuel injectors for cleanliness
- Check fuel tank cap for proper sealing
- Verify fuel pressure readings
Essential for maintaining fuel system performance and preventing issues
- Replace fuel filter
- Clean fuel injectors
- Inspect fuel pump operation
- Check fuel tank for any signs of damage
- Verify fuel line integrity
Recommended to be performed by a certified technician
- Major fuel system inspection
- Fuel injector replacement if necessary
- Fuel pump replacement if failed
- Fuel tank cleaning
- Full fuel system diagnostic test
Critical for long-term reliability and performance
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What type of fuel is recommended for the 2002-2010 Audi A8?
What type of fuel is recommended for the 2002-2010 Audi A8?
The 2002-2010 Audi A8 is 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 engine knocking.
Q2 What is the fuel tank capacity of the 2002-2010 Audi A8?
What is the fuel tank capacity of the 2002-2010 Audi A8?
The fuel tank capacity of the 2002-2010 Audi A8 is approximately 90 liters (23.8 gallons). This may vary slightly depending on the specific model and trim.
Q3 Can I use ethanol-blended fuel in my Audi A8?
Can I use ethanol-blended fuel in my Audi A8?
The 2002-2010 Audi A8 can use ethanol-blended fuels containing up to 10% ethanol (E10). However, fuels with higher ethanol content (e.g., E15 or E85) are not recommended as they can cause damage to the fuel system and engine components.
Q4 What is the fuel economy of the 2002-2010 Audi A8?
What is the fuel economy of the 2002-2010 Audi A8?
The fuel economy varies depending on the engine type and driving conditions. For example, the 4.2L V8 engine achieves approximately 15 mpg in the city and 23 mpg on the highway. Always refer to the official EPA ratings for your specific model.
Q5 How often should I replace the fuel filter in my Audi A8?
How often should I replace the fuel filter in my Audi A8?
Audi recommends replacing the fuel filter every 40,000 to 60,000 miles or as specified in your owner's manual. Regular replacement ensures optimal fuel flow and prevents contaminants from entering the engine.
Q6 What should I do if I accidentally use the wrong type of fuel?
What should I do if I accidentally use the wrong type of fuel?
If you accidentally use diesel or a fuel with an octane rating below 91, do not start the engine. Contact an Audi service center immediately to drain and flush the fuel system to prevent 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 A8 Owner's Manual (2002-2010)
Coming SoonThe official owner's manual provides detailed information on fuel specifications, maintenance schedules, and safety precautions.
Audi Fuel System Maintenance Guide
Coming SoonA comprehensive guide on maintaining the fuel system, including fuel filter replacement and fuel injector cleaning procedures.
Audi Genuine Parts Catalog
Coming SoonAccess the official catalog for genuine Audi fuel system components, including fuel pumps, filters, and injectors.
Audi Technical Service Bulletins (TSBs)
Coming SoonReview technical service bulletins related to fuel system issues and updates for the 2002-2010 Audi A8.
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Technical Information
- All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
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