I've noticed the same sound in my car. I heard it the second or third day after I brought it home. 7,000 miles later, it hasn't changed in any notable way. I have no idea if this is normal or not, but with so many other things making awful noises, (worn front tires, Bose stereo, etc), it hasn't been a priority for me yet. I would love to hear what the dealer has to say about it. Wait, let me guess, "Oh that. That's normal for a sports car!" If I had a nickel for every time I heard that...

 

I can hear the buzzing noise every time the car is idling or just coasting with no gas applied. I noticed the noise gets louder after the car has been driven aggressively. I don't know if this is normal but the car hasn't break down on me yet. Whenever I have some time I will have to let the dealer look at it. If someone find out sooner please post your findings.

Thanks

 

Update:

The dealer is replacing the fuel pump under warranty.

 

I have the same problem .. does anyone else get their fuel pump replace under warranty ? I am about to drive my car to the dealer next week. thanks !

 

Let us know how it goes... need to know if I can get mine replaced under warranty. Though I'm not sure if I want the dealership to mess with my car... hmm...