I'm not fond of the "Wolga" thing anyway, but it was really used that way, isn't it?
Unlike the Chinese ones which are just a transliteration of a transliteration.
It is not really supposed to be "Mazida": the ideaograms chosen are supposed to represent "Mazda", using the closest available. They don't use the "Mazida" version in latin letters, just either the original one or the ideogram version.