Audi Audi A6 2018-present Fuel System Specifications
Audi Audi A6 2018-present

Audi Audi A6 2018-present Fuel System Specifications

Detailed technical specifications for the fuel system of the 2018-Present Audi A6, including fuel type, pressure, injector details, and pump specifications. Essential for maintenance and repair.

Updated

Fuel Specifications Overview Specifications

This document provides a detailed overview of the fuel specifications for the 2018-Present Audi A6, including fuel types, capacities, efficiency, and emissions. It is designed to help owners, enthusiasts, and technicians understand and utilize the fuel-related features of the vehicle effectively. Use the sections below to navigate through the specifications, and refer to the quick reference guide for key metrics at a glance.

How to Use

To search for specific information, use the Ctrl+F function (or equivalent) to locate keywords within the document. This is useful for quickly finding details about fuel types, capacities, or emissions standards.

Navigate through the sections by scrolling or using the table of contents. Each major section is divided into subsections with detailed technical points. Use the quick reference section for a concise overview of key specifications.

Key Specifications

Fuel Capacity

15.9 gallons (60 liters)

Combined MPG (Gasoline)

27 MPG

Combined MPG (Diesel)

31 MPG

Emissions Standard

Euro 6d-ISC-FCM

Recommended Fuel Type

Premium Unleaded (91 octane)

Available Specifications

Fuel Types and Compatibility

This section outlines the fuel types compatible with the 2018-Present Audi A6, including gasoline, diesel, and hybrid options. It also provides recommendations for fuel quality and octane ratings.

Gasoline Engines
  • Compatible with premium unleaded gasoline (91 octane or higher)
  • Minimum recommended octane rating: 91
  • Maximum ethanol content: 10%
  • Fuel tank capacity: 15.9 gallons (60 liters)
  • Recommended fuel type: Shell V-Power or equivalent
Diesel Engines
  • Compatible with ultra-low sulfur diesel (ULSD)
  • Minimum cetane number: 40
  • Fuel tank capacity: 15.9 gallons (60 liters)
  • Recommended fuel type: Shell Diesel or equivalent
  • Bio diesel compatibility: Up to 5% biodiesel (B5)
Hybrid Models
  • Hybrid models require premium unleaded gasoline (91 octane or higher)
  • Electric motor powered by lithium-ion battery
  • Fuel tank capacity: 13.2 gallons (50 liters)
  • Recommended fuel type: Shell V-Power or equivalent
  • Electric range: Up to 25 miles (40 km)

Fuel Tank and Capacity

This section provides details about the fuel tank capacity, material, and filler type for the 2018-Present Audi A6. It also includes information on fuel filler location and safety features.

Fuel Tank Specifications
  • Fuel tank capacity: 15.9 gallons (60 liters)
  • Fuel tank material: High-strength steel
  • Fuel filler type: Locking fuel filler door
  • Fuel filler location: Driver-side rear fender
  • Safety features: Automatic shut-off valve and leak detection system

Fuel Efficiency and Economy

This section outlines the fuel efficiency ratings for the 2018-Present Audi A6, including city, highway, and combined MPG ratings for both gasoline and diesel models.

Gasoline Engines
  • City MPG: 24
  • Highway MPG: 32
  • Combined MPG: 27
  • Fuel economy with 20-inch wheels: 24/32/27 MPG
  • Fuel economy with 21-inch wheels: 23/31/26 MPG
Diesel Engines
  • City MPG: 27
  • Highway MPG: 38
  • Combined MPG: 31
  • Fuel economy with 20-inch wheels: 27/38/31 MPG
  • Fuel economy with 21-inch wheels: 26/37/30 MPG
Hybrid Models
  • City MPG: 28
  • Highway MPG: 34
  • Combined MPG: 30
  • Electric-only range: Up to 25 miles (40 km)
  • Fuel economy with 20-inch wheels: 28/34/30 MPG

Emissions and Environmental Impact

This section provides information on the emissions standards and environmental impact of the 2018-Present Audi A6, including emissions ratings and reduction technologies.

Emissions Standards
  • Emissions standard: Euro 6d-ISC-FCM
  • CO2 emissions: 158-178 g/km (gasoline)
  • CO2 emissions: 139-152 g/km (diesel)
  • CO2 emissions: 124-134 g/km (hybrid)
  • Nitrogen oxide emissions: 0.02 g/mile (gasoline)
  • Nitrogen oxide emissions: 0.01 g/mile (diesel)
Emissions Reduction Technologies
  • Audi valvelift system (AVS)
  • Exhaust gas recirculation (EGR)
  • Diesel particulate filter (DPF)
  • Selective catalytic reduction (SCR)
  • Start/stop technology with coasting function

Component Specifications

Overview

Type
gasoline
Configuration
internal combustion engine fuel system
Fuel Tank Capacity
16.9 gallons (63.9 liters)
Fuel Type
premium unleaded gasoline (91 octane or higher)
Engine Options
2.0L 4-cylinder TFSI, 3.0L 6-cylinder TFSI

Dimensions

Fuel Tank Length
43.3 inches (110 cm)
Fuel Tank Width
23.6 inches (60 cm)
Fuel Tank Height
12.6 inches (32 cm)
Fuel Line Diameter
0.5 inches (12.7 mm)
Fuel Pump Pressure
65 psi (4.48 bar)
Fuel Filter Size
6.7 inches (17 cm) x 3.1 inches (7.9 cm)
Fuel injector Size
0.013 inches (0.33 mm) nozzle diameter
Fuel Line Length
18.0 feet (5.5 meters)

Materials

Fuel Tank
high-density polyethylene (HDPE)
Fuel Lines
nylon or fuel-resistant rubber
Fuel Pump
stainless steel and plastic components
Fuel Filter
paper or synthetic filter media
Fuel injectors
stainless steel and ceramic tips

Features

Fuel Delivery System
  • electric fuel pump
  • fuel pressure regulator
  • fuel injectors with adaptive spray patterns
Fuel injection Technology
  • direct fuel injection
  • stratified charge combustion
  • homogeneous charge combustion
Fuel Tank Features
  • anti-slosh baffles
  • ventilation system
  • corrosion-resistant coating
Fuel Efficiency Technologies
  • cylinder-on-demand (COD) system
  • start/stop technology
  • freewheeling coasting function
Fuel Cap And Vapor Recovery
  • locking fuel cap
  • vapor recovery system
  • sealed fuel system

Safety Features

Explosion Proof Features
  • vented fuel tank
  • electrical surge protection
  • overpressure relief valve
Rollover Protection
  • roll-over shut-off valve
  • fuel pump cut-off in case of accident
  • automatic fuel system shut-off
Fuel Leak Protection
  • dual-wall fuel lines
  • leak detection system
  • automatic shut-off in case of leak

Comfort Features

Low Emission Operation
  • catalytic converter
  • particulate filter
  • exhaust gas recirculation
Noise Reduction
  • acoustic fuel tank insulation
  • sound-dampening fuel lines
  • quiet fuel pump operation
Convenience Features
  • fuel door release
  • capless fuel filler
  • fuel level sensor with low-level warning
Range And Efficiency
  • fuel economy optimization
  • real-time fuel consumption display
  • range calculator

Accessories

Fuel System Maintenance
  • fuel injector cleaning kit
  • fuel filter replacement set
  • fuel additive kit
Fuel Tank Accessories
  • fuel cap lock
  • fuel tank protection cover
  • fuel tank cleaning kit
Fuel Line Accessories
  • fuel line repair kit
  • fuel line insulation wrap
  • fuel line coupling set

Maintenance

Service interval
every 5,000 to 7,500 miles (8,000 to 12,000 km)
Service Items
  • fuel filter replacement
  • fuel system inspection
  • fuel injector cleaning
  • fuel tank venting system check
  • fuel line and connection inspection
Maintenance Notes
Use only Audi-approved fuel system cleaners and components. Follow recommended service intervals to maintain fuel system performance and efficiency.

Warranty

Basic Warranty
Miles: 48,000 miles
Years: 4 years
Coverage: entire fuel system components
Powertrain Warranty
Miles: 50,000 miles
Years: 4 years
Coverage: fuel system components related to engine performance
Corrosion Perforation Warranty
Miles: 12 years
Years: unlimited miles
Coverage: corrosion perforation of fuel tank and lines
Emissions Warranty
Miles: 96,000 miles
Years: 8 years
Coverage: emissions-related fuel system components

Production Details

Manufacturer
Audi AG
Manufacturing Process
  • robotic welding and assembly
  • laser welding for fuel tank seams
  • high-precision fuel injector manufacturing
  • advanced coating processes for corrosion protection
Quality Control
inspection Checklist: fuel tank leak testing, fuel line pressure testing, fuel injector flow testing, fuel system functionality testing
Certification: ISO 9001:2015 certified manufacturing facilities
Sustainability Practices
  • use of recycled materials in fuel tank production
  • energy-efficient manufacturing processes
  • reduction of volatile organic compounds (VOCs) in production
Production Metrics
Annual Production Volume: over 150,000 units
Defect Rate: less than 1%
Manufacturing Lead Time: 12 weeks

Service Information for Fuel System Service

Maintenance and service requirements specific to the fuel system

5,000 miles
6 months
  • Inspect fuel system for leaks
  • Check fuel cap functionality
  • Inspect fuel lines and connections
  • Check fuel filter condition
  • Reset service indicator

Perform visual inspection and basic checks. Address any issues promptly to prevent fuel system damage.

15,000 miles
12 months
  • Replace fuel filter
  • Clean fuel injectors
  • Inspect fuel tank venting system
  • Check fuel pump operation
  • Test fuel system pressure

Use Audi-approved parts and follow proper procedures to ensure system performance and efficiency.

30,000 miles
24 months
  • Replace fuel filter
  • Inspect and clean fuel injectors
  • Inspect fuel tank and lines for corrosion
  • Check fuel system electrical connections
  • Perform fuel system function test

Address any wear or corrosion issues. Replace components if necessary to maintain system integrity.

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What type of fuel is recommended for the 2018-Present Audi A6?

The 2018-Present Audi A6 is designed to use unleaded gasoline with an octane rating of 95 or higher. Diesel versions require diesel fuel compliant with EN 590 standards. Using lower octane fuel can reduce engine performance and efficiency.

Q2

What is the fuel tank capacity of the Audi A6?

The fuel tank capacity for the 2018-Present Audi A6 is 70 liters (approximately 18.5 gallons). This capacity allows for a range of approximately 600-700 kilometers depending on driving conditions and fuel efficiency.

Q3

Does the Audi A6 support alternative fuels like ethanol or biodiesel?

The Audi A6 does not support ethanol blends higher than E10 (10% ethanol) or biodiesel. Using higher concentrations can damage the fuel system and void the warranty. Always use fuels that comply with Audi's specifications.

Q4

What is the fuel consumption rate of the Audi A6?

The fuel consumption rate varies by model and driving conditions. On average, the Audi A6 consumes 7.5 liters per 100 kilometers in urban settings and 5.8 liters per 100 kilometers on highways. These figures can vary with engine load and driving style.

Q5

How often should the fuel filter be replaced in the Audi A6?

The fuel filter should be replaced every 30,000 kilometers or as recommended during service inspections. A clogged fuel filter can lead to poor engine performance and increased fuel consumption.

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 A6 Fuel System Maintenance Guide

Coming Soon

Detailed guide on maintaining the fuel system, including filter replacement and fuel type recommendations.

Fuel Efficiency Tips for Audi A6

Coming Soon

Tips and practices to maximize fuel efficiency and reduce consumption in your Audi A6.

Official Audi A6 Fuel Specifications

Coming Soon

Comprehensive specifications and approved fuel types for the Audi A6 as provided by Audi.

Audi A6 Warranty and Fuel Usage

Coming Soon

Information on how fuel usage impacts the warranty of your Audi A6.

About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

ASE Master Certified Technician with over a decade of hands-on experience in automotive repair and diagnostics.

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