Motor mounts are easy to diagnose
Open hood
Start engine
Shift into R
Foot on the brake raise RPMs and watch for engine to lift up on one side
Take foot off the gas pedal quickly, listen for a "clunk", broken mount on the side that lifted up
Do same think but in D now, other side will lift up
Same for Manual just use 1st and Reverse and clutch pedal
Open hood
Start engine
Shift into R
Foot on the brake raise RPMs and watch for engine to lift up on one side
Take foot off the gas pedal quickly, listen for a "clunk", broken mount on the side that lifted up
Do same think but in D now, other side will lift up
Same for Manual just use 1st and Reverse and clutch pedal