The research on automotive engineering language registers at SMK Muhammadiyah Bumiayu aims to determine the forms of registers used in learning automotive engineering majors. The type of research is descriptive qualitative research. Data obtained through interviews and document review. The interview technique was carried out by observing notes. The data were analyzed using qualitative data analysis with the distribution method. The results showed that there were 52 (fifty two) register data for automotive components, which are used in the automotive class and 25 (twenty five) register data for automotive equipment, 9 (nine) register data for maintenance and 10 (ten) register data for automotive equipment variations of the term.