Wind whistling sound through passenger door

[lorettalemon]

I was hoping someone who's experienced this might have an idea what the problem is. My car is 6 years old and for the couple of months I've noticed quite a loud windy sound coming through the passenger door although you can't feel any draught at all. There doesn't appear to be any damage - the car is in excellent condition and the window is fully shut, I always check, but you can hear it at medium speeds - over 30mph and very loudly when going fast. I started noticing it after I had a service done at Halfords but I can't think of any reason they'd have done anything to the door during a service and mot. If anyone has any ideas I'd be very grateful. I'd prefer to know what's likely to be wrong before I ask a mechanic in case they try and pull a fast one!

Bump - anyone?

My first port of call would be checking the windows are fully closed but you've done that.

Next I'd look at the door seals: make sure they're intact, suitably spongy, and don't have anything wedged in them.

After that, I'd look around the outside of the car for foreign objects. Something like a twig which has got stuck between the bonnet and windscreen wipers can whistle like hell.

At that point if I cannot eliminate it I'd start to think it might be something like the ventilation system - maybe if a filter or something has been changed, or there is debris in a duct, then a different sound might be emerging from a dashboard vent near the window. By then you're probably deep in the realms of asking a technician to look at it.

@Otherpeoplesteens thank you for the suggestions! I'll look again and see if I can see anything that's got stuck round the bonnet/windscreen. I couldn't see any damage to the seals but perhaps it's something so small I wouldn't have spotted it.