Clunking noise near trunk area

Have the car inspected at a tire and alignment shop. There's too many things to list that can make noises. Some can be serious, but on the rear most causes are not.

Struts and shock absorbers usually leak oil from the top of the body where the shaft comes out long before they start making noise. Tire wear patterns will also provide clues to the problem.

There is a tool you might be able to borrow or rent from an auto parts store that borrows them called the "Chassis Ear". It is a set of six microphones, a switch box, and headphones. You clip the microphones to suspect points, then drive around while listening with the headphones. You can move the microphones around to zero in on the source of the noise. Be aware that many mechanics have never seen or even heard of this tool. Suspension and alignment mechanics use it to find rattles, squeaks, and other noises.