C-Class (W206) 2021 to

Wind Whistle noise 50/60 mph

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Old Mar 16, 2025 | 10:01 AM
  #1  
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Wind Whistle noise 50/60 mph

Hi all,

does anyone notice a wind whistle noise from the windscreen area of their car at 50/60mph or know what the issue could be?

It’s a 2024 C200. The car seems to be very aerodynamic cd wise, and the slip stream might be causing it?

When I use my wipers the noise disappears at the top of the stroke (wiper in the top position)

i’ve tried folding the mirrors in and turning off the ventilation and it doesn’t make a difference.

video of sound below



any advice or idea would be much appreciated.


Last edited by F1nn; Mar 16, 2025 at 10:03 AM.
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Old Mar 17, 2025 | 03:49 AM
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W206 C200 4Matic
I have exactly the same whistle, but for me it's barely noticeable inside. I can hear it when i open my window or drive under the bridge above 120km/h (~75mph).
Haven't located it yet, as it's not that simple, but it doesn't seem to be coming from the windshield area in my case. Tried that "trick" with wipers, but for me sound didn't seem to stop when using them.
It is annoying and hope i will locate it one day.
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Old Mar 17, 2025 | 07:27 AM
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From: Fleriduh
W212 E63S Wagon - GSL580 - E63 - E350 - C300
I have had that twice on MB cars. In each instance it was at the bottom of the side trim where a small piece of rubber is out of the metal shield thing near the wiper blades. On one car I replaced it, the other I used some clear glue to hold down the "flappy" piece....I can get pictures in a few minutes.
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Old Mar 17, 2025 | 07:30 AM
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W206 C200 4Matic
WOW, pictures would be great! Thank you!
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Old Mar 17, 2025 | 07:46 AM
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From: Fleriduh
W212 E63S Wagon - GSL580 - E63 - E350 - C300
Same thing in two of the cars in the garage. The grey one had a whistle and at about 85mph a flapping sound....




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Old Mar 17, 2025 | 09:05 AM
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W206 C200 4Matic
Thank you!
Will check that later on in my car.
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Old Mar 17, 2025 | 05:51 PM
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2014 E63S; AMS 100 octane ECU dyno tune; EDOK TCU tune; BB intakes; sprintbooster
On the 2014-2016 e class it was the gap between the grill and the hood

https://mbworld.org/forums/w212-amg/...nt-grille.html
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Old Mar 28, 2025 | 03:44 PM
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Hi all,

Sorry for the delay in replying. Thanks for all the ideas.

After a bit of scratching my head and taping up certain areas one at a time.

I’ve finally managed to locate the whistle to the right hand side water deflector trim on the windscreen where it meets the A-Pillar.

there are two small gaps 1-2mm where the trim is not sitting flush against the A-Pillar. I didn’t notice it at first because the gaps are that small. It’s only when I taped it up and the noise stopped. On closer inspection that’s when I found the gaps.

its very strange as the left hand side sits flush.

either the trim isn’t manufactured correctly or the actual a-pillar isn’t? The are metal clips riveted into the A-pillar that might also be out of spec as the trim clips into them.








Last edited by F1nn; Mar 28, 2025 at 03:51 PM.
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