Not sure ?
Theres one in the window, sticker in engine bay, build sticker in drivers footwell and i think theres another one under drivers seat but none of them are etched or stamped
I know you always used to get one stamped into the floor often beside drivers seat on older vehicles but not sure thats the done thing anymore ?
Another way to check would be to scan the vehicle with VCDS/vagcom, that always lists the VIN number at the top of the scan