Audi Audi A6 2004-2011 3.1L Engine Specifications
Detailed technical specifications and documentation for the 3.1L V6 engine in the 2004-2011 Audi A6. Includes performance metrics, maintenance guidelines, and component-specific details for technicians and enthusiasts.
3.1L Engine Specifications Overview Specifications
This document provides a comprehensive overview of the 3.1L V6 engine specifications for the 2004-2011 Audi A6. It includes detailed technical information, performance metrics, maintenance requirements, and key features. Use this guide to understand the engine's capabilities, servicing needs, and operational parameters. Navigate through the sections to find specific information or use the quick reference section for key specifications at a glance.
How to Use
To find specific information, use the search functionality by entering keywords such as 'horsepower,' 'torque,' 'oil capacity,' or 'fuel efficiency.'
Navigate through the document by selecting sections from the table of contents. Each section contains detailed subsections with technical specifications and explanations. Use the quick reference section for a concise overview of key engine metrics.
Key Specifications
Engine Displacement
3.1 liters
Horsepower
255 hp @ 6,800 rpm
Torque
243 lb-ft @ 3,250 rpm
0-60 mph
6.8 seconds
Fuel Economy (Combined)
21 mpg
Available Specifications
General Engine Information
This section provides an overview of the 3.1L V6 engine, including its basic specifications, configuration, and key features.
General Engine Information
This section provides an overview of the 3.1L V6 engine, including its basic specifications, configuration, and key features.
Engine Displacement and Configuration
- Displacement: 3.1 liters (3119 cc)
- Cylinder configuration: V6
- Valve train: Dual overhead camshafts with variable valve timing
- Fuel injection system: Multi-point fuel injection
- Engine block material: Aluminum alloy
Engine Identification
- Engine code: ALF
- Power output: 255 horsepower @ 6,800 rpm
- Torque output: 243 lb-ft @ 3,250 rpm
- Redline: 6,500 rpm
- Compression ratio: 12.0:1
Performance and Output
This section details the engine's performance capabilities, including power output, torque delivery, and acceleration metrics.
Performance and Output
This section details the engine's performance capabilities, including power output, torque delivery, and acceleration metrics.
Power and Torque
- Maximum power: 255 horsepower @ 6,800 rpm
- Maximum torque: 243 lb-ft @ 3,250 rpm
- Power-to-weight ratio: Approximately 0.11 hp/kg
- Torque-to-weight ratio: Approximately 0.10 lb-ft/kg
Acceleration and Top Speed
- 0-60 mph: 6.8 seconds
- Quarter-mile time: 15.2 seconds
- Top speed: Electronically limited to 155 mph
- Drivetrain: Quattro all-wheel drive
Maintenance and Service
This section outlines the recommended maintenance schedule and service requirements for the 3.1L engine.
Maintenance and Service
This section outlines the recommended maintenance schedule and service requirements for the 3.1L engine.
Oil and Fluids
- Engine oil capacity: 6.5 quarts (6.1 liters)
- Recommended oil type: 5W-40 synthetic oil
- Coolant type: Audi-approved coolant/antifreeze
- Transmission fluid type: Audi-approved ATF
Service Intervals
- Oil change interval: Every 5,000 to 7,500 miles
- Spark plug replacement: Every 30,000 miles
- Timing belt replacement: Every 60,000 miles
- Brake fluid replacement: Every 2 years or 24,000 miles
Emissions and Compliance
This section provides information on the engine's emissions standards and fuel efficiency ratings.
Emissions and Compliance
This section provides information on the engine's emissions standards and fuel efficiency ratings.
Emissions Standards
- Emissions rating: ULEV II (Ultra Low Emission Vehicle)
- Emissions control systems: Catalytic converter, oxygen sensors, and EGR
- Fuel system: Returnless fuel injection system
- Exhaust system: Stainless steel exhaust with dual tailpipes
Fuel Efficiency
- City: 18 mpg
- Highway: 25 mpg
- Combined: 21 mpg
- Fuel tank capacity: 19.3 gallons
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Engine Specifications
Overview
- Type
- V6 Petrol Engine
- Configuration
- V6 24V
- Displacement
- 3.1 liters (3123 cc)
- Fuel Type
- Gasoline
- Platform
- Audi A6 (C6)
Dimensions
- Engine Length
- 452 mm
- Engine Width
- 266 mm
- Engine Height
- 519 mm
- Dry Weight
- 190 kg
- Cylinder Bore
- 85 mm
- Stroke
- 92.8 mm
- Compression Ratio
- 12.0:1
Materials
- Engine Block
- Aluminum alloy
- Cylinder Head
- Aluminum alloy
- Crankshaft
- Steel
- Valves
- Stainless steel
Features
- Engine Management
-
- Bosch Motronic MED 9.1 ECU
- Direct fuel injection
- Electronic throttle control
- Knock sensor system
- Fuel System
-
- Fuel injectors with adaptive spray pattern
- Returnless fuel system
- Fuel pressure regulator
- In-tank fuel pump
- Emissions
-
- Catalytic converter with oxygen sensors
- Secondary air injection
- EGR system
- EVAP system
- Cooling
-
- Dual-zone cooling system
- Electric cooling fan
- Aluminum radiator
- Thermostat-controlled water pump
- Drivetrain
-
- Front-wheel drive
- Available Quattro all-wheel drive
- 6-speed manual transmission
- 6-speed Tiptronic automatic transmission
Safety Features
- Engine Protection
-
- Overheating protection system
- Oil pressure monitoring
- Coolant level sensor
- Crankshaft position sensor
- Emission Control
-
- Catalytic converter monitoring
- Oxygen sensor monitoring
- Fuel system leak detection
- Structural integrity
-
- Reinforced engine block
- Strengthened cylinder head bolts
- Robust timing chain tensioner
Comfort Features
- Noise Reduction
-
- Acoustic engine cover
- Sound-dampening materials
- Helical gear teeth design
- Balanced crankshaft
- Thermal Management
-
- Dual-zone cooling system
- Rapid warm-up thermostat
- Electric cooling fan with variable speed
- Smooth Operation
-
- Hydraulic engine mounts
- Vibration-dampening torque converter
- Smooth-shift transmission logic
Accessories
- Engine Accessories
-
- Serpeentine belt system
- Tensioner and idler pulleys
- Water pump with integral pulley
- Alternator with voltage regulator
- Performance Accessories
-
- High-performance air filter
- Sport-tuned engine mapping
- Lightweight aluminum components
- Performance exhaust system
- Maintenance Accessories
-
- Oil change kit
- Air filter cleaning kit
- Spark plug set
- Fuel injector cleaning kit
Maintenance
- Service interval
- Every 15,000 km (9,300 miles) or 12 months
- Service Items
-
- Oil change with synthetic oil
- Oil filter replacement
- Air filter inspection
- Spark plug replacement (every 30,000 miles)
- Belt replacement (every 60,000 miles)
- Brake fluid change (every 30,000 miles)
- Maintenance Notes
- Follow Audi-recommended service schedule for optimal performance and longevity.
Warranty
- Basic Warranty
- Miles: 50,000 milesYears: 4 yearsCoverage: Bumper-to-bumper
- Powertrain Warranty
- Miles: 70,000 milesYears: 5 yearsCoverage: Engine, transmission, and drivetrain
- Corrosion Warranty
- Miles: Unlimited milesYears: 12 yearsCoverage: Perforation of body panels
- Maintenance Warranty
- Miles: 25,000 milesYears: 2 yearsCoverage: Scheduled maintenance
Production Details
- Manufacturer
- Audi AG
- Manufacturing Plant
- Ingolstadt, Germany
- Manufacturing Process
-
- CNC machining for precision components
- Robotic assembly lines
- Laser welding for body panels
- State-of-the-art paint application
- Quality Control
- inspection Process: Multi-stage quality control checksTesting Procedures: Engine performance testing, Emission testing, Durability testing, Noise and vibration testing
- Sustainability Practices
-
- Recyclable materials used in construction
- Energy-efficient manufacturing processes
- Emission-reducing technologies
- Recycling programs for end-of-life vehicles
- Production Metrics
- Annual Production: Over 100,000 unitsEngine Lifespan: Designed for 200,000+ miles with proper maintenanceRecycling Rate: 90% recyclable materials
Service Information for 3.1l engine Service
Maintenance and service requirements specific to this component
- Oil change with synthetic oil
- Oil filter replacement
- Air filter inspection/cleaning
- Tire pressure check
- Brake fluid level inspection
- Battery health check
Standard maintenance interval. Check for any software updates during this service.
- Spark plug replacement
- Belts and hoses inspection
- Coolant level and condition check
- Transmission fluid level check
- Differential fluid level check
- Exhaust system inspection
Intermediate service. Inspect belts for signs of wear.
- Timing belt replacement
- Water pump replacement
- Drive belts replacement
- Brake fluid change
- Fuel system cleaning
- Suspension and steering system inspection
Major service interval. Replace timing belt to prevent engine damage.
Common Questions
Find answers to common questions about torque specifications
Q1 What is the horsepower and torque output of the 3.1L engine in the 2004-2011 Audi A6?
What is the horsepower and torque output of the 3.1L engine in the 2004-2011 Audi A6?
The 3.1L V6 engine in the 2004-2011 Audi A6 produces 255 horsepower at 6,500 RPM and 243 lb-ft of torque at 3,250 RPM. This engine is designed for smooth power delivery and optimal performance across a wide RPM range.
Q2 What type of fuel system does the 3.1L engine use?
What type of fuel system does the 3.1L engine use?
The 3.1L engine utilizes a direct fuel injection system, which ensures precise fuel delivery for improved combustion efficiency, reduced emissions, and enhanced performance. The system operates at a fuel pressure of approximately 1,500 psi.
Q3 What is the recommended oil type and capacity for the 3.1L engine?
What is the recommended oil type and capacity for the 3.1L engine?
The 3.1L engine requires synthetic engine oil meeting Audi specification VW 502 00 or ACEA A3/B4. The oil capacity is approximately 6.9 liters (7.3 quarts) with a filter change. Always use the correct oil grade to ensure optimal engine performance and longevity.
Q4 What is the service interval for the timing belt on the 3.1L engine?
What is the service interval for the timing belt on the 3.1L engine?
The timing belt on the 3.1L engine should be inspected every 60,000 miles and replaced every 120,000 miles or 10 years, whichever comes first. Failure to replace the timing belt on schedule can result in severe engine damage.
Q5 What is the compression ratio of the 3.1L engine?
What is the compression ratio of the 3.1L engine?
The 3.1L engine has a compression ratio of 12.5:1, which contributes to its high efficiency and power output. This ratio is optimized for performance while maintaining reliability under normal operating conditions.
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 3.1L Engine Maintenance Guide
Coming SoonA detailed guide covering routine maintenance procedures, including oil changes, filter replacements, and timing belt inspections for the 3.1L engine.
Direct Fuel Injection System Overview
Coming SoonAn in-depth explanation of the direct fuel injection system used in the 3.1L engine, including its benefits and maintenance requirements.
Timing Belt Replacement Procedure
Coming SoonStep-by-step instructions for replacing the timing belt on the 3.1L engine, including tools required and safety precautions.
Audi Genuine Parts Catalog
Coming SoonA catalog of genuine Audi parts recommended for the 3.1L engine, ensuring compatibility and optimal performance.
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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.
- Vehicle specifications and procedures may vary by model year, trim level, and region.
- Always follow the manufacturer's recommended procedures and safety precautions.
- Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
- If you're unsure about any procedure, consult a qualified professional mechanic.
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