Our 100kmi 190E engine would make knock sounds on startup, a rhythmic thumping feel when backing up at fast idle, and engine noise would increase slightly when the suspension would compress on road undulations. The mounts also failed the clearance test, which might not be valid with yours. On removal, I found they had collapsed about 1/2" or less compared to the new replacements, and the difference in engine behavior was dramatic. I replaced the engine mounts, followed by the tranny mount and all exhaust hanger rubber.

As your engine is larger and much heavier, with a lot more low-end torque, I would expect mounts have deteriorated.

Steve