John from Ohio here, love your videos. Have a question for you... I have a 2010 Mazda3 that has 112,000mi and 8 years old and have noticed this year it seems to make tons of rear end clunky/rattling noises as of late. I've replaced struts/shocks and mounts all around, tie rod ends, brake calipers, both front control arms, and am getting parts in for sway bar links soon. I even had a heat shield that came loose and made tons of rattling sounds AND even a bad mattress squeaky noise in the rear after replacing rear shocks on one corner!
What kind of maintenance do you suggest to make it sound like I am not driving a junker down the road? Would love to have everything run quietly.