On the INM site you will find everything you need to prepare. Once you have the list, you have an appointment with the consulate to process each requirement. Among what you need are: Official and current identification. And for minors official identification with photography and apostilled records. Vehicle import permit, temporary or definitive. See the complete list in https://www.gob.mx/inm/acciones-y-programas/programa-paisano-del-inm Good luck.
You need to speak to the consulate to get correct directions
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