Yep, mine has done this since new but I can't work out what's making the noise. I had the car in last week (for something else) and asked them to look at it. They took it on two separate test drives and couldn't hear it and now that I've had the car back for a few days it's doing it again. Typical
I had a low-pitch squeak (squawk ?) in the right rear on roundabouts caused by the motor-mount when our cars was very new. It was solved by greasing the motor-mounts. It seems to be reoccuring slightly though, 15000 miles later.