Evening lads and ladies

I have one of the most basic annoying faults which before I start aimlessly purchasing new parts

So at low speeds (windows up) the noise isn't really noticeable, at around 30mph is when you can really start to hear it, and volume increases with speed, but the noise pretty much triples in volume when the window is open

I have looked for damage to the door, and door frame seal, I have also inspected the mirror for any debris and damage and can't find anything

If anyone could shed any light on this I'd be very grateful

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The wife had a CitiGo and suffered from the same problem. We narrowed it down to the water pump, a faint whistle which got louder the faster you went

I have this on my new VRS after reading up on here I think its the door mirrors that's making the whistle noise. 

I thought my friends A-Class was the only whistling car, now it seems there are more!

Once he damaged his left mirror and broke the lens cover of his turn signal. Since then his car whistles when traveling at >10mph! It took him a while to realize the culprit, and it is very funny to put your finger over the mirror, the whistle magically disappears!

You posted in the Diagnostics & VCDS section but then i suppose you are after a diagnosis of the problem and the source.

 

It would be useful if you said what vehicle you are asking about, 

maybe even ask in the relevant section for that car.

Moving to General until we find out what car you have.

Sunroof seal if you have one?

 

You could try folding the mirrors in one at a time to see if it makes a difference.

 

Leaves/ twigs caught in the front anywhere?

Apologies for the post being Generic, I didn't see that 'Diagnostics & VCDS' section had a vehicle type

The car in question is a Octavia VRS Mk2 pre FL Le

No sunroof fitted

I haven't tried folding the mirrors in that's a good shout!

And I can't see any leaves or twigs anywhere (been underneath the car to check also)

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Also I forgot to mention the problem hasn't always been there, it's only just developed over the last few months

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Tape the gap from the front wing to the door . Now test drive it has the noise gone?

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Moving to General until we find out what car you have.

 

I've continued it's journey to the Mk2 Octy section and updated your profile too.

FWIW, I reckon it could be the door seals which I think is where Flapperjack7 is heading.

Yep. That's where I was going. The cure if it is is too adjust the door's in at the front ever so slightly on the hinge this will cure it if it goes when you tape the front door line.

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Right so today I continued my investigation into the noise, driving down the A1, windows open, whistle is loud and clear.

As suggested I pulled in my wing mirror and the noise disappeared, I was shocked so tried it a few times and it definitely went when I pulled the mirror in.

This to me meant 1 of 2 things, either firstly the wing mirror was making this noise, or 2 the way the wind was defecting off of the mirror meant it was no longer blowing in the same place hence the noise going

Pulled up at my parents and looked at the mirror, bingo, found the problem, I have a stone chip hole in the indicator lense allowing air in creating a whistle!

For now the hole has been filled with a tiny bit of silicone as its not to obtrusive and can't really justify a new mirror just for the tiny hole

Thank you guys for your suggestions really helped

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