The integration of Artificial Intelligence (AI) and Machine Learning (ML) in mechanical engineering has transformed traditional practices, enabling advancements in design, manufacturing, maintenance, and optimization. This research article explores the applications of AI and ML in mechanical engineering, focusing on predictive maintenance, automation, material science, robotics, and sustainable engineering. The study also discusses challenges such as data quality, computational costs, and ethical concerns, while proposing future directions for the seamless integration of these technologies. The findings highlight the potential of AI and ML to revolutionize mechanical engineering, making processes more efficient, accurate, and innovative.