Audi A6 Allroad Suspension Parts: What You Need to Know

The Audi A6 Allroad is known for its comfortable ride and capable air suspension system. Over time, suspension components wear out and require replacement. Understanding the key parts, their functions, and replacement options helps you make informed decisions and keep your Allroad performing at its best.

Common Suspension Issues in the A6 Allroad

The A6 Allroad’s air suspension is a sophisticated system, but it’s not immune to problems. Common issues include air strut leaks, compressor failure, and worn control arms. Recognizing symptoms early can prevent further damage and costly repairs.

Air Strut Leaks

Air struts are the heart of the air suspension. They contain a rubber air spring that can develop cracks or leaks over time, especially in colder climates or after 80,000–100,000 miles. You might notice the vehicle sitting unevenly, a sagging corner, or the compressor running more frequently. Leaks almost always require strut replacement.

Compressor Failure

The air compressor pressurizes the system to raise or lower the vehicle. It can fail due to overheating, moisture contamination, or simply age. Signs include the suspension not adjusting, a warning light, or a loud noise from the compressor. Replacing the compressor often requires also replacing the relay and drying cartridge.

Worn Control Arms and Bushings

Control arms connect the wheel hubs to the frame and allow controlled movement. Their rubber bushings degrade over time, leading to clunking noises, vague steering, or uneven tire wear. Upper and lower control arms are common replacements on the A6 Allroad, especially on vehicles with higher mileage.

Key Suspension Parts for the A6 Allroad

Knowing the specific parts you may need helps when shopping for replacements. Here’s a breakdown of the major components.

Air Struts (Front and Rear)

Front and rear air struts are the primary load-bearing and damping components. Each strut contains an air spring and a shock absorber. OEM struts are made by suppliers like Continental (formerly ContiTech) or Arnott. Aftermarket options are available from brands such as Arnott Industries, Bilstein, and Meyle. When replacing, it’s recommended to replace both front or both rear struts at the same time to maintain balanced ride quality.

Air Compressor and Valve Block

The compressor pumps air into the system, and the valve block directs air to each strut. The compressor is typically located under the vehicle near the spare tire well. A failing compressor may need replacement, but sometimes just the piston ring or dryer can be repaired. Aftermarket compressors are often more affordable than OEM, but quality varies.

Control Arms and Ball Joints

The A6 Allroad uses multi-link front and rear suspension. Upper and lower control arms, along with tie rods and sway bar links, are wear items. Complete control arm kits are available from brands like Lemförder, Meyle, and Moog. Replacing the entire kit at once saves labor costs and ensures even wear.

Sway Bar Links and Bushings

Sway bar links (stabilizer links) connect the sway bar to the control arm. Worn links cause a clunk over bumps. Replacing them is inexpensive and simple. Sway bar bushings can also wear, but they last longer than links.

Shock Absorbers (if non-air models)

Some A6 Allroad models may have conventional shocks on the rear if the air suspension is not equipped. However, most Allroads have air suspension on all four corners. If you have a model with steel springs and shocks, standard shock absorbers apply.

OEM vs Aftermarket: What Should You Choose?

Choosing between original equipment (OEM) and aftermarket parts depends on budget, quality expectations, and intended use.

OEM Parts

OEM parts are made by the same suppliers that Audi uses. They guarantee fitment and performance but come at a higher cost. For suspension parts, OEM air struts can cost $800–$1,200 each. OEM control arms are also pricey. If you plan to keep the car long-term and want factory reliability, OEM is a safe choice.

Aftermarket Alternatives

Aftermarket brands like Arnott, Bilstein, Meyle, and Moog offer quality parts at lower prices. Arnott specializes in air suspension and sells remanufactured struts with a lifetime warranty. Bilstein offers performance-oriented shocks for air or coilover conversions. Meyle and Moog provide control arms with upgraded bushings. Aftermarket parts can save 30–50% compared to OEM, but careful research is needed—some cheap no-name parts may fail quickly.

For air suspension, Arnott is a reputable aftermarket choice. For control arms, Lemförder (OEM supplier) and Meyle are reliable.

Signs You Need Suspension Parts

Watch for these warning signs that indicate suspension component replacement is needed:

• Uneven ride height (one corner lower)
• Compressor running constantly
• Warning light on the dashboard
• Clunking or squeaking noises over bumps
• Bouncy or harsh ride
• Excessive body roll in corners
• Uneven tire wear

If you notice any of these, have the suspension inspected by a professional. Delaying repairs can lead to more expensive damage.

Replacement Considerations

Replacing suspension parts on the A6 Allroad can be complex, especially air struts. Here are a few practical tips:

• Alignment: Always get a wheel alignment after replacing control arms or tie rods.
• Air suspension calibration: After replacing air struts or the compressor, the system may need recalibration using a diagnostic tool.
• Labor costs: Expect 3–5 hours of labor for strut replacements and 4–6 hours for full control arm sets.
• Warning: Working on air suspension requires releasing system pressure safely. Improper handling can cause injury.

If you’re not experienced, have a qualified shop do the work.

Final Recommendation

For most A6 Allroad owners, a balanced approach works best. Use OEM or high-quality aftermarket air struts from Arnott or Bilstein for the air suspension, and choose Lemförder or Meyle control arm kits. Replace worn parts promptly to avoid secondary damage. Keep up with regular inspections, especially if you live in a region with harsh winters or rough roads. Investing in quality suspension parts preserves the Allroad’s signature ride comfort and handling.

If you’re unsure where to start, consult a specialist Audi repair shop that can diagnose the exact issue and recommend the right parts for your specific model year and driving conditions.