Audi Audi A5 2007-2016 Body Panel & Frame Bolt Torque Specifications
Audi Audi A5 2007-2016

Audi Audi A5 2007-2016 Body & Frame Bolt Torque Specifications

Comprehensive list of body bolt torque specifications for the 2007-2016 Audi A5. Includes torque values for various body panels, structural components, and related hardware.

Updated

Important Information

Safety guidelines and reference information for proper torque application

Quick Reference Guide

ft-lbs → Nm
× 1.356
ft-lbs → kg-m
× 0.138
Nm → ft-lbs
× 0.738
in-lbs → ft-lbs
× 0.083

Common Torque Patterns

Star Pattern

Used for wheels and other circular bolt patterns

Star Pattern torque pattern diagram showing proper bolt tightening sequence
Cross Pattern

Used for gaskets and cover plates

Cross Pattern torque pattern diagram showing proper bolt tightening sequence
Sequential Pattern

Used for head bolts and other critical components

Sequential Pattern torque pattern diagram showing proper bolt tightening sequence

Common Mistakes to Avoid

Over-tightening

Exceeding the specified torque value can stretch or break fasteners, damage threads, or crack components.

Prevention:

Always use a calibrated torque wrench and follow specifications exactly.

Incorrect Torque Sequence

Tightening bolts in the wrong order can cause uneven pressure distribution and potential leaks or damage.

Prevention:

Follow the manufacturer's specified torque sequence pattern.

Dirty Threads

Dirt, rust, or old thread locker can affect torque readings and proper fastener tension.

Prevention:

Clean and inspect all threads before assembly. Use new thread locker if specified.

Reusing TTY Bolts

Torque-to-yield bolts are designed to stretch and must not be reused.

Prevention:

Always replace TTY bolts with new ones. They are single-use only.

Dry vs. Lubricated

Not accounting for whether torque specs are for dry or lubricated fasteners can lead to incorrect tension.

Prevention:

Check if specs are for dry or lubricated threads. Use specified lubricant when required.

Recommended Tools

Torque Wrench (1/4" Drive)

Range: 2-25 ft-lbs
Small fasteners, delicate components

Torque Wrench (3/8" Drive)

Range: 10-100 ft-lbs
Most common automotive fasteners

Torque Wrench (1/2" Drive)

Range: 30-250 ft-lbs
Large fasteners, wheels

Angle Gauge

Torque-to-yield (TTY) bolts

Torque Wrench Care

  • Calibrate annually or after 5,000 clicks
  • Store at lowest setting
  • Keep clean and lubricated

Search Specifications

Search by component name, bolt size, or description

Torque Calculator

Convert between different torque units

Body Exterior

Torque specifications for exterior body panels, bumpers, and lighting.

1

Fender Mounting Bolts

M6 x 1.0
Torque Value
8 ft-lbs (11 N·m)
Important Notes
Estimated value. Ensure proper alignment before final tightening.
2

Bumper Cover Mounting Bolts

M6 x 1.0
Torque Value
7 ft-lbs (10 N·m)
Important Notes
Ensure proper alignment before final tightening. These are often plastic and can be easily stripped.
3

Headlight Mounting Bolts

M5 x 0.8
Torque Value
6 ft-lbs (8 N·m)
Important Notes
These are often small plastic bolts that require very low torque. Do not overtighten.
4

Taillight Mounting Bolts

M5 x 0.8
Torque Value
6 ft-lbs (8 N·m)
Important Notes
These are often small plastic bolts that require very low torque. Do not overtighten.

Body Closures

Torque specifications for hinges and latches on doors, hood, and trunk/hatch.

1

Door Hinge Bolts to Body

M8 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Check specific bolt size. Ensure proper door alignment before final tightening.
2

Door Latch/Striker Bolts to Body

M8 x 1.25
Torque Value
15 ft-lbs (20 N·m)
Important Notes
Check specific bolt size. Ensure the door closes and latches properly after tightening.
3

Hood Hinge Bolts to Body

M8 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Check specific bolt size. Ensure proper hood alignment before final tightening.
4

Trunk/Hatch Hinge Bolts to Body

M8 x 1.25
Torque Value
15 ft-lbs (20 N·m)
Important Notes
Check specific bolt size. Ensure the trunk/hatch operates smoothly after tightening.

Body Mounting

Torque specifications for body mounting components.

1

Fuel Tank Strap Bolts

M8 x 1.25
Torque Value
22 ft-lbs (30 N·m)
Important Notes
Proper torque is crucial for secure fuel tank mounting. Ensure bolts are in good condition.
2

Fuel Filler Neck Bolts

M6 x 1.0
Torque Value
5 ft-lbs (7 N·m)
Important Notes
Ensure a proper seal after installation, check for leaks.
3

Seat Mounting Bolts

M10 x 1.5
Torque Value
22 ft-lbs (30 N·m)
Important Notes
Ensure proper seat alignment and movement after tightening.
4

Dash/Instrument Panel Mounting Bolts

M6 x 1.0
Torque Value
7 ft-lbs (10 N·m)
Important Notes
Ensure proper fit and alignment of dash panel after installation.

Troubleshooting Guide

Common issues, diagnostic steps, and prevention guidelines

Common Issues

Bolt stretching, stripped threads, uneven torque patterns

Loose Components

Symptoms:
  • Rattling or vibration noises
  • Visible movement in components
  • Uneven panel gaps
Solutions:
  • Clean threads and mounting surfaces
  • Replace damaged fasteners
  • Apply proper torque in sequence
  • Use thread locker if specified

Stripped Fasteners

Symptoms:
  • Unable to achieve proper torque
  • Fastener spins freely
  • Visible thread damage
Solutions:
  • Use thread repair kit if appropriate
  • Install thread insert (HeliCoil)
  • Replace component if threaded hole is damaged
  • Upgrade to higher grade fastener if recommended

Overtightened Components

Symptoms:
  • Cracked or deformed parts
  • Broken fasteners
  • Compressed gaskets or seals
Solutions:
  • Replace damaged components
  • Use new fasteners
  • Follow proper torque sequence
  • Verify correct torque specifications

Diagnostic Steps

Visual inspection, torque verification, thread assessment

1

Visual Inspection

Inspect the affected area for any visible signs of damage or wear

  • Check for cracks or deformation
  • Look for signs of excessive wear
  • Verify proper fastener installation
2

Torque Verification

Verify the torque applied to the fasteners

  • Check the torque wrench calibration
  • Verify the torque specification
  • Compare the applied torque to the specification
3

Thread Assessment

Assess the condition of the threads

  • Check for signs of thread damage
  • Verify the thread type and size
  • Check for proper thread engagement

Prevention Guidelines

Best practices, maintenance tips, tool care

Best Practices

  • Always follow the recommended torque specification
  • Use the correct type and size of fasteners
  • Verify the torque wrench calibration regularly

Maintenance Tips

  • Regularly inspect the affected area for signs of wear or damage
  • Replace damaged or worn-out components promptly
  • Keep the work area clean and organized

Tool Care

  • Regularly clean and maintain the torque wrench
  • Store the torque wrench in a dry and secure location
  • Verify the torque wrench calibration before each use

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

Why are torque specifications important when working on my Audi A5's body?

Correct torque is crucial for securing body panels and components properly. Under-tightening can cause parts to loosen, rattle, or even fall off, leading to damage and safety hazards. Over-tightening can strip threads, deform panels, or even break fasteners. Using the correct torque ensures the proper clamping force is applied for a secure and reliable connection.

Q2

What happens if I over-torque a body bolt?

Over-torquing can stretch or break the bolt, strip threads in the receiving panel or component, or cause damage by deforming the surrounding metal. This can lead to a weakened connection, requiring repair of the threads, or even replacement of the bolt and possibly the panel it was attached to. For example, over-tightening a fender bolt could cause a dent around the bolt hole and make proper alignment impossible.

Q3

What tools do I need to correctly torque body bolts?

You'll need a torque wrench that covers the range of torque values specified for your vehicle's body bolts. It's recommended to use a calibrated torque wrench for accuracy. Additionally, you'll need appropriate sockets or wrenches to fit the specific bolt heads. A set of extension bars can be helpful for reaching bolts in tight spaces. Always double-check the socket size is correct to avoid damaging the bolt or slipping with the wrench.

Q4

Are there any specific torque values for different body panels?

Yes, different body panels, such as the fenders, bumpers, doors, and hood, will often have different torque specifications. The manufacturer's service manual or reputable online resources will specify these values. For example, a bumper cover might require a lower torque setting than a hinge bolt for the hood or doors, due to material differences and load-bearing requirements.

Q5

Can I reuse body bolts after removing them?

Generally, it's advisable to replace body bolts if they are specified as torque-to-yield (TTY) or if they show any signs of damage, such as stretching, rust, or thread damage. For non-TTY bolts, careful inspection should be done prior to reusing them. Damaged or compromised bolts should always be replaced, as they may not provide the necessary holding power.

Environmental Considerations

Temperature, humidity, and seasonal effects on torque specifications

Temperature Effects

Includes: High Heat, Cold Weather, Thermal Cycling

Temperature can significantly impact torque values and fastener behavior

Cold Weather

Effects:
  • Increased material brittleness
  • Higher torque required due to thread contraction
  • Reduced thread lubricant effectiveness
Recommendations:
  • Allow components to warm to room temperature when possible
  • Consider using winter-grade thread lubricants
  • Check torque values more frequently during winter months

Hot Weather

Effects:
  • Thermal expansion of components
  • Decreased friction in threads
  • Accelerated lubricant breakdown
Recommendations:
  • Check torque when components are at normal operating temperature
  • Use temperature-resistant thread lockers
  • Consider re-torquing after heat cycles

Humidity and Corrosion

Covers: Rust Prevention, Salt Exposure, Moisture Control

Moisture and corrosion can affect fastener integrity and torque values

High Humidity

Effects:
  • Accelerated corrosion formation
  • Reduced friction coefficient
  • Potential thread seizing
Prevention:
  • Use corrosion-resistant fasteners
  • Apply appropriate anti-seize compounds
  • Maintain proper protective coatings

Salt Exposure

Effects:
  • Rapid corrosion development
  • Thread damage
  • Seized fasteners
Prevention:
  • Regular underbody washing
  • Use of sacrificial anodes where appropriate
  • Application of protective coatings

Seasonal Maintenance

Spring, Summer, Fall, and Winter maintenance schedules

Spring

  • Inspect for winter damage
  • Clean and protect exposed fasteners
  • Check torque on critical components

Summer

  • Monitor heat-affected components
  • Check expansion-related loosening
  • Inspect cooling system mounts

Fall

  • Prepare for winter conditions
  • Apply corrosion protection
  • Verify all fasteners are properly torqued

Winter

  • More frequent inspection of critical fasteners
  • Check for salt damage
  • Monitor suspension component torque

Related Resources

Tools, service procedures, and technical bulletins

Recommended Tools

Torque Wrench (1/4" Drive)

A 1/4" drive torque wrench is essential for accurately tightening smaller body bolts to the correct torque specification.

  • Adjustable torque settings
  • Audible click when torque is reached
  • Small profile for tight spaces
Learn more

Torque Wrench (3/8" Drive)

A 3/8" drive torque wrench is used for most body fasteners, providing the necessary torque range and accuracy.

  • Adjustable torque settings
  • Audible click when torque is reached
  • Versatile size for many body bolts
Learn more

Socket Set (Metric)

A comprehensive metric socket set is crucial for accessing and fitting onto various body bolt head sizes.

  • Various socket sizes (6mm - 19mm)
  • 6-point and 12-point options
  • Durable construction
Learn more

Extension Bars (Various Lengths)

Extension bars of different lengths help reach bolts in recessed areas.

  • Provides reach in tight spots
  • Durable construction
  • Multiple lengths available
Learn more

Universal Joint Adapter

A universal joint adapter allows socket access to bolts at awkward angles.

  • Enables socket access at angles
  • Durable construction
  • Suitable for 1/4" and 3/8" drives
Learn more
Service Procedures

Front Bumper Cover Removal and Installation

Detailed procedure for removing and reinstalling the front bumper cover, including torque specifications for associated fasteners.

  • Locate all fasteners securing the bumper cover.
  • Using appropriate sockets and extension bars, loosen all fasteners. Some may be under the wheel well.
  • Carefully detach the bumper cover.
  • Align the bumper cover and reattach all fasteners.
  • Tighten all fasteners to the specified torque for the location. Generally 8Nm for plastic, 25Nm for structural bolts.
View full procedure

Rear Bumper Cover Removal and Installation

Procedure for removing and reinstalling the rear bumper cover, including torque specifications for all relevant bolts.

  • Locate all fasteners securing the rear bumper cover.
  • Using appropriate sockets, loosen all fasteners.
  • Carefully detach the rear bumper cover.
  • Align the bumper cover and reattach all fasteners.
  • Tighten all fasteners to the specified torque for the location. Generally 8Nm for plastic, 25Nm for structural bolts.
View full procedure

Fender Removal and Installation

Procedure for removing and reinstalling the front fenders, including torque specifications for all associated body bolts.

  • Open the front door to access all bolts
  • Using appropriate sockets and extension bars, loosen all fasteners. Some may be under the wheel well.
  • Carefully detach the fender.
  • Align the fender and reattach all fasteners.
  • Tighten all fasteners to the specified torque for the location. Generally 8Nm for plastic, 25Nm for structural bolts.
View full procedure

Door Panel Removal and Installation

Procedure for removing and reinstalling door panels, including the correct torque specs for all related bolts.

  • Locate and remove all visible screws.
  • Carefully detach the door panel clips using plastic trim tools.
  • Disconnect any electrical connectors.
  • Align the door panel and reattach all fasteners.
  • Tighten all fasteners to the specified torque for the location. Generally 8Nm for plastic, 25Nm for structural bolts.
View full procedure
Technical Service Bulletins

Corrosion Issues on Bumper Support Brackets

2012-03-15

Technical bulletin regarding corrosion issues on the bumper support brackets of Audi A5 models, resulting in loose fasteners and bumper misalignment.

2007-2012

Resolution: Inspect brackets for corrosion, replace as necessary, and use new fasteners. Ensure fasteners are tightened to the specified torque: 25Nm.

Loose Fender Bolts Leading to Alignment Issues

2014-07-22

Technical bulletin regarding loose fender bolts leading to misalignment and noise issues in Audi A5 models.

2007-2014

Resolution: Inspect all fender bolts. Ensure proper torque of 25Nm is applied. Replace any damaged or corroded fasteners.

Interior Trim Panel Rattling due to Loose Fasteners

2015-11-01

Technical bulletin addressing rattling noises from interior trim panels due to loose fasteners in Audi A5 models.

2007-2016

Resolution: Inspect all interior trim panel fasteners. Ensure proper torque of 8Nm is applied. Replace any damaged or corroded clips or screws.

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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