Another CX-5 owner had this problem on the Mazda Facebook group:
https://www.facebook.com/groups/1541413606071616/?ref=br_tf
I can't figure out how to link to the specific posts but here are the copied and pasted posts, you can search for them on the FB page using CTRL+F if you want to read the post's comments:
Deb Rumley Van Speybroeck
September 15
Taking my '16 back to the dealership, 3rd time. Had it there for the drivers front window, won't go all the way down, (towards the back of window, stays above the weather striping a smidgen). They told me some do that, some don't. I don't buy it, but I'll live with it. Since that initial appointment, I have a noise in the drivers front door area. Not all the time, only hear it in the city. They found issue and "fixed it" back in Aug. Didnt take too long until noise came back. Thought I remembered a post awhile ago about a noise in that area that someone posted?
Deb Rumley Van Speybroeck
September 28 at 4:24pm
Around the 16th I posted about my drivers window not going all the way down on my '16 CX5. Had it into the dealership twice, they gave me the run around, saying some are like that, if they tried to fix by replacing the door, chances are it would happen again, and/or the paint wouldn't match. After talking to you guys, I contacted Mazda and filed a complaint. Guess what...Mazda called Friday and wanted me to take the vehicle back to the dealership. So I have another appointment tomorrow morning at 7:30 am. I will keep you'll posted!
Deb Rumley Van Speybroeck
October 7 at 8:58am
So I wanted to give an update on my window. It is now fixed! According to the Mazda engineer, this issue was within "normal characteristics-guidelines". IMO, this is a Mazda flaw that they should address! Anyway, Mazda must have come down hard on the dealership, because they treated me like royalty (lol) by making my car top priority, and giving me a rental overnight smile emoticon So happy this is over