Best way to check is to stick a jack under the motor. Jack it up and note.... If the entire car lifts right away, the mounts are fine. If you notice the engine lift before the car starts to, its one or more engine mounts. Same can be performed on the subframe and suspension.Yeah, my 01 9-5 LPT with 81k mi. makes all kinds of noise from the front drivers side. It sounds like something is really loose in the suspesion when I go over uneven surfaces. But, it doesnt make the sound when I hit bumps. This is what leads me to believe its not suspension related. Not sure what else to think of it. Its done it since I bought it 2 years ago, but not as bad. Now its constant and annoying. My best guess if the mount as well vs. suspension.
Im going to replace that mount first and see what happens.