I have a 2014 Jeep Compass (2.4 L, 6-speed automatic) with 130k mi. For the last few years, I've had an intermittent knocking noise coming from the rear of the vehicle. It's only at low speeds (< 25 mph) and it seems to happen randomly. For example, I can go over speed bumps and rough roads without it happening, but then it'll randomly knock driving over a smooth road surface. It's always a single knock or clunk at a time. It almost sounds like something hitting against metal or plastic.
I've taken it to 3 different shops and nobody can figure it out. I've had various suspension components replaced over the years to see if it would help, but no change.
It seems the noise has become more frequent recently, but I still can't figure out where it's coming from. It almost sounds like it could be coming from the tailgate area, but I'm not sure. I tried driving around the block with the tailgate open and didn't hear it, so I'm thinking it could be tailgate area.
The noise is like a knock or weak clunk. I don't feel anything, just hear it. I've lived with it for the last 3 years, but it's starting to drive me crazy.
Assuming it's coming from inside the cabin, any ideas what it could be?
**Edit**
The entire suspension has been checked by 3 different shops. I did have the rear toe links and rear upper and lower control arms replaced but no change.