I noticed that my car vibrated mostly when it was idle. I had my mechanic look at it and sure enough, all four motor mounts had to be replaced. Three were bad (one really bad), but I had them all done since it was cheaper labor-wise. Because I had an automatic, I had to get the OEM mounts, which were VERY expensive. If you can, look into getting the SVT mounts, which I believe fit on a standard. BAT sells them. Good luck!
