Recently, I’ve noticed my base 2014 Acura RLX has been making a loud clunk when I turn it off. I want to say it’s coming from closer to the rear, but I could be wrong on that. It’s almost inaudible in any semi-loud environment, but when I park in the quiet drive-way or garage, it is very loud. Is this normal? What is causing this clunk?

Thank you,

well, loose muffler or exhaust hangers will do that, jack it up and test those first. Also look for bent heat shields that might hit when engine is shut off