Occasionally (and I mean pretty darn infrequently) I do get an audible glitch to two using my iPhone 6 (or my iPhone 4 before that), but nothing like a "repeating pattern", or anything that happens consistently. For the most part, Bluetooth audio sounds great with my iPhone.
Have you tried another Bluetooth audio device with your FFE? If the glitching is the same, the probably your FFE is to blame. If not, then somehow the Moto?
You could try rebooting the MFT computer. You can look the fuse up in your owner's manual. I know its one of the fuses in the block under the glove box.
2013 FFE, Platinum White, Delivered January 2013
2017 MS, Midnight Silver Metallic, Delivered February 2017
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