I have a 2013 Fit Base, 5 speed stick. Last month or so, I hear a "clunk" (for lack of a better term) noise coming from under the car. Sometimes when I shift, sometimes turning a corner, sometimes going down the road, like I ran over something. At times from front of the car, at times the rear but always sounds like it's under the car. Looked and didn't see anything hanging down. Doesn't affect driving, etc and just hear it once in awhile. Oh, car has 42,500 miles on it. Any ideas? Thanks!

 

No ideas. It can be just about anything and needs to be inspected by someone who has the knowledge and the tools (preferably a lift).
It could be the uni-body problem, the strut, the strut tower, the tie rod end, the cv axle, the ball joints, the steering rack, the control arm bushings, motor or transmission mounts.... etc.

Asking like this here wont help you unless the car is inspected to rule out the possible issues and determine the source of the noise.
Good luck.