My 2015 build car dash, has this winter decided to creak from both side pillar on uneven road surfaces. Putting the heating to windscreen defrost stops the noise after a couple of minutes – only to come back again after a while when it is de-selected. Checked previous thread on this and it seem to be the earlier build cars than had a problem with rattles. Last winter it was ok
I wonder if it is a result of the car being damaged in the summer:
http://mazdacx5forums.co.uk/index.php?topic=475.0