Of all of them, I think the iPod classic is the worst. It will have the same symptoms as the iOS variations, and every now and then it starts playing loud white noise for no particular reason.
Right.. Mazda created all kinds of USB related bugs in the 2014 model year (and those issues still exist in the 2015 model year.) Being the original poster has a 2015 grand touring, and you have a 2013, you might as well be comparing a Mazda CX-5 with a Ford F-150. Even if you have the upgraded audio unit, they are different units.I have an iPod touch in my 2013 CX-5