Audi Audi S8 2012-2018 Fuel System Specifications
Detailed technical specifications and maintenance guidelines for the 2012-2018 Audi S8 fuel system, including fuel type requirements, fuel injection system, fuel pressure, and component details.
Overview Specifications
Comprehensive description of the fuel specifications for the 2012-2018 Audi S8, including key features, measurements, and technical details. This section provides essential information on fuel requirements, system components, and performance metrics to ensure optimal vehicle operation.
How to Use
Use the search function to locate specific fuel specifications by entering keywords such as 'fuel type', 'octane rating', or 'fuel system pressure'.
Navigate through the fuel documentation sections using the table of contents or by scrolling through the document. Each major section is clearly labeled for easy access.
Key Specifications
Fuel Type
Premium unleaded gasoline (min. 91 octane)
Fuel Tank Capacity
80 liters (21.1 gallons)
Fuel Injector Pressure
200 bar (2900 psi)
CO2 Emissions
249 g/km
Available Specifications
Fuel Requirements
This section outlines the fuel type, octane rating, and additives recommended for the 2012-2018 Audi S8 to ensure optimal engine performance and longevity.
Fuel Requirements
This section outlines the fuel type, octane rating, and additives recommended for the 2012-2018 Audi S8 to ensure optimal engine performance and longevity.
Fuel Type and Octane Rating
- Premium unleaded gasoline with a minimum octane rating of 91 (RON 95)
- Do not use gasoline with an octane rating below 91 to prevent engine knocking
- Ethanol blends up to E10 (10% ethanol) are acceptable
- Avoid using diesel or any other non-gasoline fuels
Fuel Additives
- Use only Audi-approved fuel additives to maintain fuel system cleanliness
- Avoid additives containing metal compounds or silicone
- Additives should not exceed 0.1% of the total fuel volume
- Regular use of additives is not required but can enhance performance
Note: Using non-approved additives may void the vehicle warranty.
Fuel System Components
This section details the key components of the fuel system, including the fuel tank, fuel pump, injectors, and pressure regulators.
Fuel System Components
This section details the key components of the fuel system, including the fuel tank, fuel pump, injectors, and pressure regulators.
Fuel Tank
- Capacity: 80 liters (21.1 gallons)
- Material: High-density polyethylene with anti-corrosion coating
- Includes an integrated fuel level sensor
- Designed to minimize fuel sloshing and evaporation
Fuel Injectors
- Direct injection system with piezo-electric injectors
- Operating pressure: 200 bar (2900 psi)
- Precision-controlled fuel delivery for optimal combustion
- Self-cleaning function to prevent clogging
Note: Regular maintenance is required to ensure injector performance.
Fuel System Performance
This section covers the performance metrics of the fuel system, including fuel consumption, emissions, and efficiency.
Fuel System Performance
This section covers the performance metrics of the fuel system, including fuel consumption, emissions, and efficiency.
Fuel Consumption
- City driving: 14.7 L/100 km (16 mpg)
- Highway driving: 8.5 L/100 km (27.7 mpg)
- Combined: 10.8 L/100 km (21.8 mpg)
- Fuel economy may vary based on driving conditions
Emissions and Efficiency
- Complies with Euro 6 emissions standards
- CO2 emissions: 249 g/km
- Equipped with a catalytic converter and particulate filter
- Optimized for low emissions and high efficiency
Note: Regular maintenance is essential to maintain emission standards.
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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 void warranty and cause engine damage
Fuel Tank
- Capacity
- 23.8 gallons (90 liters)
- Material
- High-density polyethylene (HDPE)
- Part Number
- 4H0201101A
- Pressure Rating
- 3.0 bar (43.5 psi)
- Notes
- Includes integrated fuel pump and level sensor
Fuel Pump
- Type
- Electric in-tank fuel pump
- Flow Rate
- 120 liters per hour (LPH) at 5 bar (72.5 psi)
- Pressure
- 5.0 bar (72.5 psi) nominal
- Part Number
- 4H0919051B
- Voltage
- 12V DC
- Notes
- Includes integrated fuel filter
Fuel injectors
- Type
- Direct injection (FSI)
- Flow Rate
- 200 cc/min at 3.0 bar (43.5 psi)
- Part Number
- 06E906036C
- Spray Pattern
- Multi-hole, cone-shaped
- Notes
- Requires periodic cleaning to maintain performance
Fuel Pressure
- Operating Pressure
- 50-150 bar (725-2175 psi)
- Tolerance
- +/- 5 bar (72.5 psi)
- Sensor Part Number
- 06E906051K
- Notes
- Monitored by the engine control unit (ECU)
Fuel Filter
- Type
- In-line, replaceable
- Part Number
- 4H0127434A
- Micron Rating
- 10 microns
- Replacement interval
- Every 40,000 miles or 48 months
- Notes
- Located under the vehicle near the fuel tank
Fuel System Maintenance
- injector Cleaning Interval
- Every 30,000 miles or 36 months
- Fuel Tank Cleaning Interval
- Every 60,000 miles or 72 months
- Notes
- Use Audi-approved fuel system cleaners
Fuel System Diagnostics
- Diagnostic Tool
- VAS 5054A or equivalent
- Fault Codes
-
- P0171
- P0172
- P0087
- P0088
- Notes
- Check fuel pressure, injector performance, and pump operation
Fuel System Safety
- Fire Risk
- High during maintenance or repair
- Safety Precautions
-
- Disconnect battery before servicing
- Relieve fuel pressure before disconnecting lines
- Use approved fire extinguisher nearby
- Notes
- Follow Audi workshop manual procedures
Emissions Compliance
- Standards
- Euro 6 and EPA Tier 3
- Evaporative Emissions System
- Sealed system with charcoal canister
- Part Number
- 4H0201102B
- Notes
- Includes leak detection pump and pressure sensor
Service Information Service
Detailed service requirements and schedules for the fuel system
- Inspect fuel lines and connections for leaks
- Check fuel pressure and system performance
- Verify fuel injector operation
Use Audi-approved diagnostic tools
- Replace fuel filter
- Clean fuel injectors
- Inspect fuel pump and tank
Follow Audi maintenance schedule
- Perform full fuel system diagnostic
- Replace fuel pump if necessary
- Clean fuel tank and lines
Use Audi-approved parts and cleaners
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What type of fuel is recommended for the 2012-2018 Audi S8?
What type of fuel is recommended for the 2012-2018 Audi S8?
The 2012-2018 Audi S8 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 engine knocking.
Q2 What is the fuel tank capacity of the Audi S8?
What is the fuel tank capacity of the Audi S8?
The fuel tank capacity of the 2012-2018 Audi S8 is 23.8 gallons (90 liters). This allows for extended driving range, especially given the vehicle's efficient fuel consumption for its performance class.
Q3 What is the fuel economy of the Audi S8?
What is the fuel economy of the Audi S8?
The 2012-2018 Audi S8 achieves an EPA-estimated fuel economy of 15 mpg in the city and 26 mpg on the highway. Actual mileage may vary based on driving conditions, load, and maintenance.
Q4 Can I use ethanol-blended fuel in the Audi S8?
Can I use ethanol-blended fuel in the Audi S8?
The Audi S8 is compatible with ethanol-blended fuels containing up to 10% ethanol (E10). Using fuels with higher ethanol content may void the warranty and cause damage to the fuel system components.
Q5 What happens if I use diesel or the wrong fuel type?
What happens if I use diesel or the wrong fuel type?
Using diesel or the wrong fuel type in the Audi S8 can cause severe engine damage, fuel system contamination, and void the warranty. If this occurs, do not start the engine and contact an authorized Audi service center immediately.
Q6 How often should I replace the fuel filter?
How often should I replace the fuel filter?
The fuel filter in the Audi S8 is designed to last the lifetime of the vehicle under normal driving conditions. However, if you experience reduced performance or fuel delivery issues, consult an authorized Audi technician for inspection.
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 SoonA comprehensive guide to maintaining the fuel system of your Audi S8, including tips for optimal performance and longevity.
Audi Warranty and Fuel Requirements
Coming SoonLearn about the warranty implications of using incorrect fuel types and how to ensure compliance with Audi's fuel specifications.
Audi S8 Owner's Manual
Coming SoonThe official owner's manual for the 2012-2018 Audi S8, containing detailed information on fuel specifications, maintenance, and safety.
Audi Fuel Additives and Cleaners
Coming SoonInformation on approved fuel additives and cleaners for the Audi S8 to maintain fuel system efficiency and prevent deposits.
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