I have a 2004 Mitsubishi Outlander with 100,000 miles. For the past several weeks, I have noticed a noise that sounds like a vibration or a rattling. This noise happens when I am coasting between 40mph and 50mph. Above or below that, no noise. When I put my foot on the accelerator or brake, it goes away. I most often notice this noise in traffic. The noise sounds like it is coming from under the center of the dashboard.