Is this an issue with only Mirages with keyless entry? IIRC nobody with just the basic fob has had this issue, as of yet. Im just guessing though.
Base model Mirages in Canada may not have remote keyless entry, but all Mirages (all trim levels & years) sold in the States do.
Regardless of the car having a F.A.S.T.- key (push button start) or not, I don't think the actuator motor for power locks would be any different inside the door. These are doors that aren't working when the power lock button inside the door is pushed, too.