The engine mounts of your car are made out of rubber and metal for preventing the excessive engine movements during driving. It is mostly used for absorbing the engine vibrations, engine torque as well as support the engine. The engine mounts are also used for reducing the excessive vibrations and noise, so when they go bad, your car will show several symptoms to aware you about the issues. You can once go through the given video to know about the common signs of a bad engine mounts in your car.
https://www.youtube.com/watch?v=HMc0DNyoRwU