Audi Audi A6 2011-2018 Exhaust Specifications
Detailed technical specifications and documentation for the exhaust system of the 2011-2018 Audi A6. Includes component details, torque specifications, and maintenance guidelines.
Exhaust System Specifications Overview Specifications
This document provides a comprehensive overview of the exhaust system specifications for the 2011-2018 Audi A6. It includes detailed information about components, performance metrics, and maintenance requirements. Use this guide to understand the technical aspects of the exhaust system, identify key components, and perform routine maintenance. Refer to the sections below for detailed specifications and guidelines.
How to Use
To find specific information, use the search functionality by typing keywords such as 'muffler,' 'catalytic converter,' or 'tailpipe.' Filter results by engine type or model year for more precise information.
Navigate through the sections using the table of contents. Each section is divided into subsections that provide detailed specifications and technical points. Use the quick reference section for at-a-glance key specifications.
Key Specifications
Muffler Diameter
2.5 in (63.5 mm)
Catalytic Converter Type
Three-way catalyst
Tailpipe Diameter
2.0 in (50.8 mm)
Max Flow Rate
450 CFM
Backpressure
0.5 psi
Available Specifications
Exhaust System Components
This section details the key components of the Audi A6 exhaust system, including the muffler, catalytic converter, and tailpipes. Understand the materials, dimensions, and functions of each component.
Exhaust System Components
This section details the key components of the Audi A6 exhaust system, including the muffler, catalytic converter, and tailpipes. Understand the materials, dimensions, and functions of each component.
Muffler and Resonator
- Muffler diameter: 2.5 inches (63.5 mm)
- Resonator length: 18 inches (457 mm)
- Muffler material: Stainless steel
- Dual exhaust system available on select models
- Muffler reduces noise levels by up to 20 dB
- Resonator tuned for optimal sound quality
Catalytic Converter
- Catalytic converter type: Three-way catalyst
- Converter size: 5.5 x 4 x 2 inches (140 x 102 x 51 mm)
- Reduces emissions by up to 90%
- Honeycomb substrate for efficient gas flow
- Built-in oxygen sensor for monitoring
- Compliant with Euro 5 and 6 standards
Tailpipes and Tips
- Tailpipe diameter: 2.0 inches (50.8 mm)
- Dual chrome-plated tips on select trims
- Tips length: 4 inches (102 mm)
- Tailpipe material: Stainless steel
- Integrated heat shield for protection
- Optional sport tips available
Front Pipe and Intermediate Pipe
- Front pipe diameter: 2.5 inches (63.5 mm)
- Intermediate pipe length: 48 inches (1220 mm)
- Flex pipe included for engine movement
- High-temperature resistant coating
- Bolt-on design for easy replacement
- Leak-resistant gaskets
Performance and Emissions
This section outlines the performance metrics and emissions specifications of the Audi A6 exhaust system. Learn about flow rates, backpressure, and emissions control.
Performance and Emissions
This section outlines the performance metrics and emissions specifications of the Audi A6 exhaust system. Learn about flow rates, backpressure, and emissions control.
Exhaust Flow and Backpressure
- Maximum flow rate: 450 CFM
- Optimized backpressure: 0.5 psi
- Low-restriction design for better performance
- Flow rate tested at 5,000 RPM
- Backpressure reduction improves horsepower
- System designed for turbocharged engines
Emissions Control
- Compliant with Euro 5 and 6 standards
- Reduces CO emissions by 50%
- HC emissions reduced by 70%
- NOx emissions reduced by 90%
- Integrated particulate filter on diesel models
- Emissions monitoring system included
Sound Dampening
- Internal baffling for noise reduction
- Sound level at 70 mph: 72 dB
- Sound level at idle: 45 dB
- Optional sound-enhancing mufflers
- Acoustic insulation in cabin
- Meets EU noise regulations
Heat Management
- Heat shields protect undercarriage
- Ceramic coating on exhaust manifold
- Temperature-resistant gaskets
- Max operating temperature: 1,200°F (649°C)
- Heat-insulated exhaust pipes
- Overheat protection system
Maintenance and Replacement
This section provides guidelines for maintaining and replacing components of the Audi A6 exhaust system. Learn about inspection intervals, replacement parts, and DIY tips.
Maintenance and Replacement
This section provides guidelines for maintaining and replacing components of the Audi A6 exhaust system. Learn about inspection intervals, replacement parts, and DIY tips.
Inspection and Cleaning
- Inspect exhaust system every 12,000 miles
- Check for leaks and corrosion
- Clean muffler and resonator annually
- Inspect oxygen sensor every 30,000 miles
- Look for damaged or loose heat shields
- Test backpressure with a gauge
Replacement Intervals
- Muffler replacement: 80,000 - 100,000 miles
- Catalytic converter replacement: 120,000 miles
- Tailpipe replacement: 70,000 - 90,000 miles
- Flex pipe replacement: 60,000 - 80,000 miles
- Gaskets and seals replacement: 50,000 miles
- Replace entire system at 150,000 miles
DIY and Professional Service
- Basic tools required: Socket set, wrench, jack
- Recommended torque specs: 30-50 Nm
- Avoid using impact wrench on heat shields
- Professional welding required for repairs
- Use OEM or high-quality aftermarket parts
- Consult repair manual for detailed instructions
Cost Estimates
- Muffler replacement: $300 - $600
- Catalytic converter replacement: $800 - $1,500
- Tailpipe replacement: $200 - $400
- Flex pipe replacement: $150 - $300
- Full system replacement: $1,500 - $3,000
- Labor costs: $200 - $500 depending on shop
Search Specifications
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Component Specifications
Overview
- Type
- dual exhaust system
- Configuration
- two tailpipes
- Platform
- MLB (Modular Longitudinal Matrix)
- Material
- stainless steel
- Location
- dual rear
Dimensions
- Tailpipe Diameter
- 2.5 inches (63.5 mm)
- Muffler Length
- 24 inches (610 mm)
- Muffler Width
- 12 inches (305 mm)
- Catalytic Converter Size
- 6 inches (152 mm) diameter, 12 inches (305 mm) length
- Exhaust Pipe Diameter
- 2.25 inches (57 mm)
- System Weight
- approximately 45 pounds (20.4 kg)
Materials
- Muffler
- stainless steel with perforated core
- Catalytic Converter
- stainless steel with ceramic substrate
- Exhaust Pipes
- stainless steel
- Gaskets
- high-temperature resistant rubber
- Hangars
- durable rubber mounts
Features
- Performance
-
- optimized for engine performance
- low backpressure design
- improved throttle response
- Sound
-
- tuned exhaust note
- dual exhaust configuration
- resonator for sound reduction
- optional sport mode
- Durability
-
- heat shields for thermal protection
- welded connections
- corrosion-resistant coatings
Safety Features
- Heat Protection
-
- heat shields around exhaust components
- thermal insulation
- Leak Protection
-
- sealed connections
- durable gaskets
- Temperature Resistance
-
- high-temperature resistant materials
Comfort Features
- Noise Reduction
-
- resonator for sound dampening
- muffler design for noise absorption
- aero-acoustic tuning
- Vibration Isolation
-
- rubber mounts for exhaust system
- decoupled exhaust components
Accessories
- Optional Equipment
-
- chrome-plated tailpipe tips
- performance exhaust upgrades
- exhaust system dress kits
Maintenance
- Service interval
- every 15,000 miles or 12 months
- Service Items
-
- inspect exhaust system for leaks
- check exhaust mounts
- clean or replace spark arrestor
- inspect heat shields
- Notes
- Avoid using high-pressure washes near exhaust components.
Warranty
- Basic
- Miles: 50,000Years: 4Coverage: exhaust system components
- Emissions
- Miles: 80,000Years: 8Coverage: catalytic converter and related components
- Accessories
- Miles: 24,000Years: 2Coverage: optional equipment and accessories
Production Details
- Manufacturer
- Audi AG
- Manufacturing Process
-
- robotic welding
- precision machining
- catalytic converter production
- quality control inspection
- Quality Control
- Process: end-of-line pressure testinginspection: visual and acoustic testing
- Sustainability
- manufactured with recyclable materials
- Production Metrics
- produced in Audi's state-of-the-art facilities
Service Information for Exhaust System Service
Regular maintenance is crucial for the longevity and performance of the exhaust system.
- Inspect exhaust system for leaks or damage
- Check exhaust mounts and hangers
- Clean spark arrestor (if equipped)
- Inspect heat shields and connections
Ensure all components are secure and functioning properly.
- Inspect catalytic converter for efficiency
- Check exhaust gas recirculation system
- Clean or replace oxygen sensor (if necessary)
- Inspect exhaust system for corrosion
Special tools may be required for certain checks.
- Replace exhaust gaskets
- Inspect and replace muffler (if necessary)
- Check exhaust pipe condition
- Perform system pressure test
Critical maintenance to ensure system integrity and performance.
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What is the diameter of the exhaust pipes on the 2011-2018 Audi A6?
What is the diameter of the exhaust pipes on the 2011-2018 Audi A6?
The exhaust pipes on the 2011-2018 Audi A6 have an outer diameter of 70 mm for the 2.0T and 3.0T models, while the S6 and RS6 models feature a 75 mm diameter. The inner diameter varies slightly depending on the trim and engine configuration.
Q2 What type of catalytic converter is used in the Audi A6 exhaust system?
What type of catalytic converter is used in the Audi A6 exhaust system?
The 2011-2018 Audi A6 uses a high-flow, three-way catalytic converter with a ceramic monolith substrate. The converter is designed to meet Euro 5 and Euro 6 emissions standards, depending on the model year and region.
Q3 What is the recommended service interval for the exhaust system?
What is the recommended service interval for the exhaust system?
Audi recommends inspecting the exhaust system every 15,000 miles or 12 months, whichever comes first. This includes checking for leaks, corrosion, and ensuring all mounting points and hangers are secure.
Q4 Can I replace the stock exhaust with an aftermarket system without voiding the warranty?
Can I replace the stock exhaust with an aftermarket system without voiding the warranty?
Replacing the stock exhaust with an aftermarket system may void the warranty if the modification causes damage to other components or violates Audi's warranty terms. Always consult your dealer or warranty documentation before making modifications.
Q5 What is the material composition of the Audi A6 exhaust system?
What is the material composition of the Audi A6 exhaust system?
The exhaust system is primarily constructed from stainless steel (grade 409 or 304, depending on the trim). The S6 and RS6 models feature additional heat-resistant alloys to handle higher exhaust gas temperatures.
Q6 How do I identify a failing exhaust component?
How do I identify a failing exhaust component?
Common signs of a failing exhaust component include unusual noises (e.g., rattling or hissing), reduced fuel efficiency, a strong exhaust odor inside the cabin, or visible rust and corrosion. A diagnostic scan may also reveal error codes related to the oxygen sensors or catalytic converter.
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 Exhaust System Repair Manual
Coming SoonOfficial Audi repair manual for the 2011-2018 A6 exhaust system, including step-by-step instructions for component replacement and troubleshooting.
Exhaust System Maintenance Guide
Coming SoonComprehensive guide on maintaining the Audi A6 exhaust system, including tips for preventing corrosion and ensuring optimal performance.
Audi Genuine Parts Catalog
Coming SoonAccess the official Audi parts catalog to find genuine exhaust components for your 2011-2018 A6, ensuring compatibility and warranty compliance.
Exhaust System Warranty Information
Coming SoonDetailed information on Audi's warranty coverage for the exhaust system, including terms, conditions, and exclusions.
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