@OfficialBlackbeard was some time I was last time replacing vehicles, but if I remember right, just renaming in vehicles.meta didn't help. But same as renaming name of places and weapons the vehicles are able to rename in global.gxt2 . Location of the main global file is

update > update.rpf > x64 > data > lang > your language (for example american_rel.rpf) and there is the file.

Here just find the name of you vehicle and rename it, may be more times than one so take care rename all. There are also story conversations so if that care is mentioned in any conversation during story, you can replace also that and they will call it in the story by 'right', your new name (: