Audi Audi A3 2021-present Fuel System Specifications
Audi Audi A3 2021-present

Audi Audi A3 2021-present Fuel System Specifications

Detailed technical specifications for the fuel system of the 2021-Present Audi A3, covering fuel type, tank capacity, delivery system, injector details, and emission standards.

Updated

2021-Present Audi A3 Fuel Specifications Overview Specifications

This document provides a comprehensive overview of the fuel specifications for the 2021-Present Audi A3. It includes detailed information about fuel types, capacities, consumption rates, and emissions. Use this guide to understand the fuel requirements and efficiency of your vehicle, ensuring optimal performance and compliance with environmental standards. Navigate through the sections to find specific details or use the quick reference section for key specifications.

How to Use

To find specific information, use the search functionality by entering keywords such as 'fuel type,' 'capacity,' or 'emissions.' The search will highlight relevant sections and subsections.

Navigate through the document by selecting sections from the table of contents. Each section contains subsections with detailed technical points. Use the quick reference section for a summary of key specifications.

Key Specifications

Fuel Type

Gasoline, Diesel, PHEV

Fuel Tank Capacity

50 liters (gasoline/diesel), 40 liters (PHEV)

Combined Fuel Consumption

5.1-6.0 L/100km (gasoline), 3.3-3.8 L/100km (diesel)

CO2 Emissions

117-137 g/km (gasoline), 86-98 g/km (diesel)

Emission Standard

Euro 6d ISC-FCM

Available Specifications

Fuel Types and Capacities

This section details the fuel types available for the 2021-Present Audi A3, including gasoline, diesel, and hybrid options, as well as fuel tank capacities and recommended fuel grades.

Available Fuel Types
  • Gasoline (Petrol): Available in 1.0L, 1.5L, and 2.0L engine variants
  • Diesel: Available in 2.0L TDI engine variant
  • Plug-in Hybrid (PHEV): Available in 1.4L TFSI e-engine variant
  • Recommended fuel grade: 95-98 RON for gasoline engines
  • Recommended fuel grade: Diesel B7 for diesel engines
Fuel Tank Capacity
  • Gasoline models: 50 liters
  • Diesel models: 50 liters
  • PHEV models: 40 liters (gasoline)
  • AdBlue tank capacity (diesel models): 12 liters

Fuel Consumption and Efficiency

This section provides information on the fuel consumption rates and efficiency metrics for the 2021-Present Audi A3, including urban, extra-urban, and combined cycle data.

Fuel Consumption Rates
  • Urban cycle (gasoline): 6.1-7.3 L/100km
  • Extra-urban cycle (gasoline): 4.2-5.0 L/100km
  • Combined cycle (gasoline): 5.1-6.0 L/100km
  • Urban cycle (diesel): 3.8-4.5 L/100km
  • Extra-urban cycle (diesel): 3.0-3.5 L/100km
  • Combined cycle (diesel): 3.3-3.8 L/100km
Emission Data
  • CO2 emissions (gasoline): 117-137 g/km
  • CO2 emissions (diesel): 86-98 g/km
  • Emission standard: Euro 6d ISC-FCM
  • PHEV CO2 emissions: 28-34 g/km

Fuel System and Maintenance

This section covers the fuel system components, maintenance requirements, and recommendations for the 2021-Present Audi A3.

Fuel System Components
  • Fuel tank material: High-density polyethylene
  • Fuel pump: Electric, submerged in the fuel tank
  • Fuel injectors: Piezo injectors for gasoline engines
  • Fuel injectors: Common-rail injectors for diesel engines
  • PHEV fuel system: Separate gasoline and electric propulsion systems
Maintenance Recommendations
  • Fuel filter replacement interval: Every 30,000 km or as indicated by the service indicator
  • Diesel particulate filter (DPF) regeneration: Automatic, no maintenance required
  • AdBlue refill interval: Every 10,000 km or as needed
  • Fuel injector cleaning: Recommended every 60,000 km or as needed
  • Spark plug replacement (gasoline): Every 100,000 km

Component Specifications

Overview

Type
Petrol (Gasoline)
Configuration
In-line 4-cylinder
Fuel Tank Capacity
50 liters (13.2 US gallons)
Fuel injection Type
Direct Fuel Injection
Fuel Grade
Super Unleaded (95-98 RON)

Dimensions

Fuel Tank Capacity
50 liters (13.2 US gallons)
Fuel Line Diameter
10 mm (0.39 in)
Fuel injector Size
Multi-hole fuel injectors
Fuel Pump Pressure
3.5 bar (50.76 psi)
Fuel Filter Size
200 mm x 60 mm (7.87 in x 2.36 in)

Materials

Fuel Tank
High-Density Polyethylene (HDPE)
Fuel Lines
Fuel-resistant rubber hoses
Fuel injectors
Stainless Steel with Teflon coating
Fuel Pump
Durable plastic and metal components

Features

Engine Management
  • Adaptive Knock Control
  • Homogeneous Charge Compression Ignition (HCCI)
  • Exhaust Gas Recirculation (EGR)
  • Electronic Throttle Control
Fuel Efficiency
  • Start/Stop Technology
  • Brake Energy Regeneration
  • Optimized Fuel Injection Timing
  • Cylinder-on-Demand (CoD) Technology
Emission Control
  • Three-Way Catalytic Converter
  • lambda Heated Oxygen Sensor
  • Fuel Evaporative Emission Control System
  • Diesel Particulate Filter (DPF)
Fuel System Protection
  • Anti-Drainback Valve
  • Fuel Tank Ventilation Valve
  • Fuel Line Pressure Relief Valve
  • Electronic Fuel Pump Shut-off in Case of Crash

Safety Features

Fuel System Protection
  • Multiple Fuel Tank Baffles for Reduced Sloshing
  • Rollover Valve to Prevent Fuel Leakage
  • Impact-Resistant Fuel Tank Design
  • Automated Fuel Pump Shut-off in Emergency Situations
Emission Control Safety
  • Catalytic Converter Overheat Protection
  • Exhaust System Heat Shielding
  • Fuel System Leak Detection

Comfort Features

Smooth Operation
  • Smooth Power Delivery
  • Consistent Throttle Response
  • Low Vibration Fuel System
  • Quiet Operation
Convenience
  • Large Fuel Tank Capacity for Extended Range
  • Easy Fuel Cap Design
  • Fuel Door Release from Driver Seat
  • Fuel Level Indicator with Reserve Warning
Efficiency
  • Optimized Fuel Consumption
  • Real-Time Fuel Efficiency Display
  • Eco Driving Mode
  • Smart Start/Stop Technology

Accessories

Fuel Additives
  • Fuel Injector Cleaner
  • Fuel System Cleaner
  • Fuel Stabilizer
  • Anti-Corrosion Additive
Fuel Tank Accessories
  • High-Quality Fuel Cap
  • Fuel Tank Protector
  • Fuel Door Hinge Lubricant
  • Fuel Tank Breather Hose
Fuel System Tools
  • Fuel Pressure Test Kit
  • Fuel Line Repair Kit
  • Fuel Injector Cleaning Kit
  • Fuel Filter Wrench

Maintenance

Service interval
Every 15,000 km (9,300 miles) or 12 months
Service Items
  • Fuel Filter Replacement
  • Fuel System Cleaning
  • Fuel Injector Cleaning
  • Fuel Line Inspection
  • Fuel Tank Cap Inspection
Maintenance Notes
  • Use only approved fuel additives
  • Replace fuel filter every 15,000 km
  • Inspect fuel lines and connections annually
  • Avoid using contaminated or low-quality fuel

Warranty

New Vehicle
Years: 3
Miles: Unlimited
Coverage: Bumper-to-Bumper
Powertrain
Years: 5
Miles: Unlimited
Coverage: Powertrain Components
Emissions
Years: 5
Miles: 80,000
Coverage: Emission Control Systems
Fuel System
Years: 3
Miles: 36,000
Coverage: Fuel System Components

Production Details

Manufacturer
Audi AG
Manufacturing Process
  • Robotically Welded Fuel Tank
  • Precision-Machined Fuel Injectors
  • High-Temperature Fuel Line Manufacturing
  • Advanced Coating Application for Corrosion Resistance
Quality Control
inspection: 100% Visual and Pressure Testing
Testing: Leak Testing and Performance Verification
Certification: Compliance with International Standards
Sustainability
  • Recyclable Materials Used
  • Low Emission Manufacturing Process
  • Energy-Efficient Production Techniques
  • Waste Reduction Programs
Production Metrics
Annual Output: Over 500,000 units
Quality Rating: 99.9% defect-free rate
Cycle Time: Reduced production time by 20%
innovation: Continuous R&D Investment

Service Information for Fuel System Service

Maintenance and service requirements specific to the fuel system

5,000 miles
6 months
  • Fuel Filter Replacement
  • Fuel System Inspection
  • Fuel Injector Cleaning
  • Fuel Line and Connection Check

Essential for maintaining optimal fuel efficiency and performance

15,000 miles
12 months
  • Fuel Tank Cap Inspection
  • Fuel Pump Performance Check
  • Fuel Pressure Test
  • Fuel Line Integrity Test

Recommended before long trips or extreme weather conditions

30,000 miles
24 months
  • Fuel System Cleaning
  • Fuel Injector Replacement (if necessary)
  • Fuel Pressure Regulator Check
  • Fuel Tank Breather Hose Inspection

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 2021-Present Audi A3?

The 2021-Present Audi A3 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 efficiency.

Q2

What is the fuel tank capacity of the 2021-Present Audi A3?

The fuel tank capacity of the 2021-Present Audi A3 is 14.5 gallons (55 liters). This capacity may vary slightly depending on the specific trim and model configuration.

Q3

Can I use ethanol-blended fuel in my Audi A3?

Yes, the 2021-Present Audi A3 can use ethanol-blended fuels containing up to 10% ethanol (E10). However, fuels with higher ethanol content, such as E85, are not recommended and may cause damage to the fuel system.

Q4

What is the fuel economy of the 2021-Present Audi A3?

The fuel economy for the 2021-Present Audi A3 varies by engine type. The 2.0L TFSI engine achieves approximately 28 MPG in the city and 38 MPG on the highway. The 1.4L TFSI engine achieves around 29 MPG in the city and 39 MPG on the highway.

Q5

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

If you accidentally use the wrong type of fuel, do not start the engine. Contact an authorized Audi service center immediately for assistance. Starting the engine with incorrect fuel can cause severe damage to the fuel system and engine components.

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 impact on engine performance, specifically tailored for Audi vehicles.

Audi Warranty and Fuel Requirements

Coming Soon

Understand how using the correct fuel type impacts your Audi warranty and what steps to take to maintain coverage.

Ethanol-Blended Fuels and Your Audi

Coming Soon

Explore the effects of ethanol-blended fuels on Audi engines and fuel systems, including compatibility and best practices.

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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