As the title says, I got my brand new Mk 4 this week and I've noticed this noise when I'm on the motorway going over or around 75mph. It's not particularly loud but it's noticable and really annoying after a whlie. It sounds as if it's coming from the dash/door on the drivers side. I've made sure the windows are all fully closed, and it doesn't seem to matter whether or not the air con is running or the vents are open. Has anyone experienced this?

"Brand new Mk 4 ST-Line high pitched whistling at 75mph+..."

You need to get that car an audition with Britains Got talent, maybe using a Roger Whittaker backing track? 🤣

It's probably an alarm saying slow down the speed limit is 70 MPH

7 hours ago, Mark-UK said:

It's probably an alarm saying slow down the speed limit is 70 MPH

Wow I bet you're fun at parties 😴😴😂

I've got an STLX and not experienced that at all. I do have the heko deflectors on the front doors though.

I've not heard this, that said some cars just do have a speed at which they make funny noises.  Sounds daft but just do 74 or 76?

Check the rubber door trim. Also check the puddle light in the side mirror.

On 9/18/2020 at 7:23 PM, Guy Heaton said:

I've not heard this, that said some cars just do have a speed at which they make funny noises.  Sounds daft but just do 74 or 76?

It's obviously not as exact or specific as that, it's just generally around 75mph and up I can hear it. But I'd rather not be limited to ~70mph for the rest of my time with the car.

23 hours ago, VFR800 said:

Check the rubber door trim. Also check the puddle light in the side mirror.

Yeah it sounds a bit like rubber rubbing together, I'll have a look.