I am hearing a loud clunk in my rear suspension when I go over medium size bumps or holes in the road at speeds greater than 25 mph. I don't know much else about the suspension, other than it being multi-link. Any ideas on the cause of this noise?

 

Check the link to see if on there nice and tight.. if it's loose, you'll hear that clanking noise... I'm telling you this from my present experience.. I left my endlink loose when I changed my springs months back. Once it's tighened like it should be, you'll be fine All you need is the hex tool and combination wrench. ... should take you no more than 2 mins to fix

 

Are you sure the clunk noice is from your rear suspension ? Did you have
any stock in your trunk that could make the noice ????? ....

 

If your not to mechanically inclined, bringing it into a alignemnt shop or something to let them look for something loose or worn. Other wise support the car get under and inspect things that may be worn or loose. Check the swaybar endlinks. see if they are in 1 piece or broken.