Easiest way to check mounts is from below. (Ramps or jack stands are sufficient--as always, be careful) Remove the black plastic engine bay lower cover to expose the engine bay from below. Looking from underneath towards the front of the car you can see the mounts. Take a good look at the picture I posted and compare. Look at the gap between the chassis and the bottom flange of the mount, If this gap is 5/8 inch or less, mounts are probably collapsed. Replacing is very DIYable. I've done two cars, first took about an hour and a half, second took about 25 minutes. Requires a low profile socket (17 mm if I remember correctly) on the top bolt of the passenger side mount. Top bolt on drivers side is accessible from the top with a long extension and wobble type socket drive. Bottom bolts are accessible from below with a socket and short drive extension. Once mounts are loose, the engine must be raised to get the mounts out--best to use a lift on the engine hoist point. (I used a floor jack with wood blocks on the bottom of the oil pan--a bit risky because if done carelessly you could cause damage to the oil pan. If you choose this method be sure the blocks transfer load to the front and rear edges of the pan.)

If your mounts are collapsed you will notice a vibration through the seat of your pants especially when at idle at a stop light. Replacing collpased mounts makes a very noticable difference in motor vibration felt in the car.