Abstract: The object of the study is the borrowed terms in the modern French scientific and technical literature on electric vehicles. The subject of the study is the etymological, functional, morphological, phonetic and semantic characteristics of terms and their influence on the process of their francization. The purpose of the study is to determine the features of the assimilation process and the types of assimilation of the electric vehicle terms borrowed into the French language. Evaluation of the process may be important for understanding the formation of new French terms systems. Special attention is paid to the characteristics of the terms of the electric vehicles, the factors influencing the development of the terms system, the methods of assimilation. The study concludes that the process of assimilation of borrowed terms of electric vehicle in the French language proceeds under the influence of linguistic and extralinguistic factors. The classifications of borrowed vocabulary are compared to group borrowings according to the degree of assimilation. The borrowed terms with partial assimilation in French change their phonetic and graphic forms, participate in word formation with prefixes and suffixes, may lose their original meaning, and acquire a specific one. Fully assimilated terms are indistinguishable from the native vocabulary, whereas for non-assimilated borrowings, comments or synonyms are required. The study of the assimilation process can be continued by a more detailed study of certain types of assimilation (graphic, phonetic, semantic, etc.) of borrowed terms in the new terms systems in French using the created classifications.