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Clunking Noise from Front Suspension on 2021 Audi S5 Sportback

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Rachel A. · rep 0 · May 22, 4:26 AM · 1 replies · solved · Question

Vehicle: 2021 Audi S5 Sportback

Hey everyone,

I've got a concerning clunking noise coming from the front end of my 2021 Audi S5 Sportback. It's most noticeable when going over bumps, speed bumps, or uneven pavement at low speeds. It sounds like a single, distinct 'clunk' from the driver's side front.

The car only has about 25,000 miles on it, so I'm surprised to hear something like this already. I haven't hit any major potholes recently. Any ideas what might be loose or worn out? Could it be a common S5 issue?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 4:26 AM

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ClearTheCode admin answer:

A clunking noise from the front suspension, especially over bumps, is a classic indicator of worn or loose suspension components. Given your 2021 Audi S5 Sportback's mileage, it's a bit early for major wear, but it's not unheard of. Here are the most likely culprits:

  1. Sway Bar End Links: These small links connect the sway bar to the suspension. The bushings or ball joints within them can wear out, causing a clunking noise as the suspension articulates. This is a very common source of clunks.
  2. Control Arm Bushings: Audi's multi-link front suspension uses several control arms. The rubber bushings that connect these arms to the subframe or steering knuckle can degrade or tear, leading to play and a clunking sound. This is a common wear item.
  3. Ball Joints: The ball joints in the control arms or steering knuckle can wear out, creating looseness and noise. A worn ball joint is a safety concern as it can lead to wheel separation if it fails completely.
  4. Strut Mounts/Bearings: The top mount of the strut assembly, which attaches it to the car's body, contains a bearing that allows the strut to rotate with steering. If this mount or bearing is worn, it can cause clunking or popping noises, especially when turning or going over bumps.
  5. Loose Components: Sometimes, it can be as simple as a loose bolt on a suspension component or even a loose brake caliper. A thorough inspection is needed.

When to see a shop:

  • Immediately. Any unusual noise from the suspension should be investigated promptly. Loose or worn suspension components can compromise handling, steering, and braking, posing a significant safety risk.
  • A qualified technician will put the car on a lift and perform a detailed inspection, checking for play in all suspension joints, bushings, and mounts. They can often replicate the noise by prying on components or using a chassis ear to pinpoint the exact source.
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