VW Polo Whistling - is this normal?

DavidG

Member
I have a VW Polo and when I travel at around 30mph or more there is a whistling, it stops when i take my foot off the accelator. I've had the car for over a year and only noticed this last few days.
It seems to stop when I'm going downhill sometimes. Is this something to worry about/see mechanic about, or is something I can do to sort it?
Should mention when sat on the drive, and revving there is no noise. And also when driving taking it out of gear and revving there is no noise either
 
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