I've been searching for about 20 minutes now to see if anyone else has voiced a similar issue, but I had no luck.

Anyways...I'm hearing a 'clicking' type noise only when I accelerate. It isn't extremely loud and I notice it when I'm going slower (btw 0-45 mph), but I think this is due to the fact that the car just gets louder at higher speeds and causes me not to be able to hear it beyond those speeds while accelerating. The noise sounds like its coming more from the front right side of the car up near the front right wheel/tire perhaps but not sure. It very well could be coming from the 'center' or inside the hood too. Its difficult to tell.

If anyone has any ideas as to what this may be I would greatly appreciate it. I haven't noticed any extreme performance issues by any means...just curious as to what it might be as it is a little annoying...Thanks in advance.

I have a noise from the engine when accelarating.
But it's not like clicking sound, it's like keep spinning sound.
I can't really explain but it's more like woo woo woo woo sound. :P
And I talk to service but they said it's normal.
And I also got a chance to drive my friend's vw gti, but it makes same sound.
I guess all the german engine make same spinning sound? :wacko:

Check your tires for foreign objects in the tread; under the hood for objects in the path of the serpentine belt. Also look underneath the car - there are plastic panels that can come loose when airflow causes them to flap in the breeze.

These are my initial thoughts.

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I appreciate the responses...I've done a pretty thorough check of anything that could be loose down in that area, but came up with nothing.
The only thing that makes me think its not that easy is that the noise goes away when I'm off the gas pedal. If I'm just coasting I don't have any noise...only when accelerating.

I been wondering the same thing aswell. To me it sound like a more metallic sound then just air or air making hitting something. I can hear it on start up every now and then and it is a very soft metallic vibration more present when givin' it gas. The sound comes and goes. Also the car handles like a champ and has been to the dealers a couple of times. Even the techs did not seem to notice anything was wrong. Hope someone can chime in as well on this issue.

Motor Mount ?

I have a similar issue on my 2005 545i. It's like a whirring sound. Almost like some feedback or something. Can hear it best with the windows up and radio off. Can't hear it from outside, and it just started after 37k miles.

It doesn't seem like a motor-mount issue, as I can hear it when I rev the engine with the clutch in, but only when the throttle is opened. Seems like it would be some kind of noise associated with the valvetronic system. I was also thinking it was some kind of noise from the electronic throttle box.

Happens at all RPM's. Can have it in 6th, floor it and you'll hear it. Rises and falls in tempo/volume with RPM, but only appears when the throttle is open.

Am going to bring it in in a few weeks to have them take a listen. Will update.

Excellent...let us know if you figure anything out.

I also have this sound. Then I heard a few BMW's drive past me and heard the same noise, just said to myself that it had to be normal