A few small things I am starting to notice.
There is a small "clunk" from the drive shaft/rear diff when shifting into first after coming to a stop. Pretty sure this is just the synchros working and is normal.
Very very small rattle coming from the back seat. Possibly the rear seat belts, or I didn't close the fold down back seats all the way yesterday. Can only hear it when the HVAC and radio is off. Its tiny, but is the first potential rattle.
The engine from the outside sounds odd for a boxer. It almost makes a pulsating squeaking noise, like a pulley is making sound, but I cant locate it. Prolly already broke it, from my hard break in
edit: 350ish miles btw. Just for a reference I already had found about 10 issues with my Legacy at this point. I have problems....