The passing percentage of candidates in the UPSC Civil Services Prelims is relatively low, typically ranging between 2 to 5 percent. This high level of competition is due to the vast number of aspirants who appear for the exam each year, making it one of the most challenging assessments in India. The low passing rate indicates the rigorous nature of the exam and underscores the importance of a structured study plan, comprehensive preparation, and a strong grasp of both the syllabus and current affairs.