Alright, so for the last few days I've had some sort of knocking noise coming from under the rear of the car, and it would happen intermittently, and I couldn't find any way to provoke it. I was backing up my driveway tonight, and it's fairly long. But I could feel it in my seat loud and clear. Any guesses as to what this may be? I haven't dug into it yet, but I'd like some ideas to try before I get into it tomorrow.
Thanks
Nick

 

Might be something loose underneath the vehicle (exhaust pipe for example). Make a sound video of the knocking noise.

 

My guesses

1/ torn diff mount rubbers
sound like a muted thud and it happens when going over bumps

2/Muffler mounts hitting body

 

Found any solution ?