[apollo]

I finally got my hands on a Motorola MA1 and have been using it on the EV6. It actually works really well. Setup requires that you have your phone connected to and working with Android Auto via the USB connection first, then disconnect the phone and plug the MA1 into the car's USB port; from there you just pair with the MA1 over Bluetooth from the phone and after a few seconds, the AA on the car starts working.

After that initial setup, the phone automatically starts projecting AA wirelessly through the MA1 when the phone connects to the Kia Bluetooth. It's been working pretty flawlessly and the only side-effect is while I'm within Bluetooth range of the MA1 and the USB port is powered on (like when charging or having just turned the car off), it seems that my phone detects the MA1 and a message appears in the notification bar that it's waiting for the Android Auto connection to become ready.

 

[apollo]

After using both the Motorola and the AAWireless, I can say the AAWireless is the better option for the EV6 because it has the companion app where you can set it to only start up Android Auto when the phone connects to the Kia Bluetooth.

Both work fine but the Motorola will cause a persistent notification on your phone says "looking for Android Auto" if you're close enough to the car when the car is off due to the USB port always being powered. By default, the AAWireless does this too, but if you download the companion app and enable the appropriate setting in it, it will keep this from happening.

Other than that minor nuisance, both seem to work fine.

 

[apollo]

I'm not running into any interference issues personally, and I'd expect 2.4GHz to be a much busier frequency TBH, more devices on 2.4GHz and it reaches further.

FWIW, my AAWireless app shows the option to force 2.4GHz mode, but again I personally don't see any need to.