Congrats on your GRMN and welcome to the forum. I believe that the Yaris GRMN was made in France, at the Valenciennes production facility.
Thanks for the information. Turns out that same plant provides this body style to the rest of the world, even in the U.S. and Canada. Meanwhile other Yaris models are produced on the other side of the Ocean. Eventually they'll be due for a next-generation version so I don't know how long France production will hold up.