ok i have had this noise for the longest time. its coming from the driverside by the front fender,its a rattle that is thier all the time either car off and still moving or car driving,it get louder at higher rpms and going over bumps. its like a loose screw or something loose metal on metal rattle or could be anything rattling. just throw some ideas from any past experiance cause im sick of listening to it.
Maybe a screw fell down into the fender by the windshield washer resevoir? Only thing I can think of.
i think i might be having this same noise. i havn’t figured it out yet either but it is driving me nuts and the only way i get rid of it is to turn my music up. 
however, i pressed down on the driver’s side motor mount and it stops my rattle. check and see if you can do the same thing. again, i have no idea what the noise is i’m just checking to see if we’re having the same problem.