The old Ford Escorts were noisy and so were my Caravans with the Chrysler 2.4 engines (not GEMA). We think our Pat is more quiet than the last Caravan we had with 2.4L engine.
If I remember correct, it seems that my 2014 Patriot with auto transmission is more quiet than the 2013 I test drove with the CVT. It seems that the CVT tended to make the drive train more "buzzy". But, my memory is bad. Someday, test drive a 2014 and compare it to yours. Part of the noise could be the "tuning", or lack, of in the exhaust system also.
I think the noisy engine is just a reflection of my comment above about this engine lacking refinement. It's stout and reliable, but not refined. Subaru engines can be a bit noisy too.
Some people claim that brand or type of oil can affect the sound of an engine.