iFixit would've known it if there where a hidden NFC chip/antenna (which is pretty big and would be (as nowadays done mostly) hidden in the battery).
BUT there is a hack to buy a QI antenne like [german ebay item number: 261348107126] and squish it in like in here
Youtube Video ID: U2WPjw-WaCI
It is blocking the USB connector and yes it looks pretty ugly too and I'm actually afraid of breaking it off while im stuffing it in my bag etc.
and yes im new here (just abanndoned the german android-hilfe (after 4 years) forum cause of the nazis) and am not allowed to post links
Soo conclusion in my very opinion is: there is a high chance of no antenna whatsoever in the moto g. Im afraid.