Hi All, I am new to the forum and thought I would say hello and post a note about a rattle on my 2016 CX5. The rattle went on for several weeks, and sounded like it was from the rear seat. Checked, all was secure. Checked the spare compartment, thinking something in there had worked loose? Nope. The screws on the spoiler had worked loose. Easy to fix, but it REALLY sounded like the noise was coming from inside the car. Hope this helps someone.