Now for something squirrelly. All of the doors in this vehicle require a little more effort in snapping them closed than I've been accustomed to in a string of Toyotas and and a Honda. This is my first Mazda.
A few years ago I added additional weather stripping to key sections on our 1st gen CX5 (to mimic my Euro luxury cars) ability to block out wind noise. It requires a bit more effort to close the door but creates a more efficient vacuum in the cabin
I'm pretty sure the more recent CX-5s post 2016 have beefier weather stripping for the same reason.