Overall love my CX-5, but definitely have a couple of gripes.
I've tried lots of different wiper blades, run the windshield defroster and it doesn't matter. Snow still has a tendency to ice up and bunch up on the blades and then they are of course less effective at wiping.
On that same winter note, the rear backup camera gets so incredibly dirty. It's annoying having to go back and clean it all the time, otherwise it's useless. I wish they had some sort of solution in place to clean it (wiper or something?).
Too much plastic in the interior.
I don't have too many issues with the seats like people have mentioned, except on long road trips, the seats can get a bit uncomfortable. But day to day, I like them just fine.
As for the ride, you're supposed to feel the road. For me, that was a selling point and I love it. Sure the Honda and Toyota were smooth to drive, but they were also boring as hell. The Mazda takes corners so well, and feeling the road is great. I love driving around in the mountains with it on the curvy roads.