This research examines prevalent mistakes in the English vowel and consonant sounds of pronunciation among undergraduate Libyan students majoring in English for the year 2022-2023. The sample consisted of ten second- and third-year students from the English department of Derna University, who had already taken a pronunciation class. Students were selected based on their completion of an English department course titled Pronunciation. This is qualitative research which describes observation and audio recordings of students pronouncing words and direct observations as well as recorded audio as the students’ session. The results indicated a high frequency of word and sentence articulation errors. Students in the sample struggled to produce vowel sounds with 150 incorrect pronunciations recorded, as opposed to 75 instances of erroneous consonant pronunciations. These findings help clarify some of the phonological problems English is perceived as or taught to be and provides guidance towards resolving them.