Not taking Physics or Precalculus in high school can pose some challenges for aspiring mechanical engineers, but it is not an insurmountable disadvantage. Self-studying these subjects can help mitigate gaps in knowledge. College engineering programs are generally rigorous, requiring significant study time—often around 50 hours a week. Students who have prior exposure to calculus, chemistry, and physics in high school tend to transition more smoothly into college-level coursework, as they are better prepared for the fast-paced curriculum. Those who lack this preparation may struggle, especially when professors assume a foundational understanding of these topics. It is advisable to consider taking a summer course in Precalculus before college and to consult with a college advisor for guidance. While Physics may not be as critical, having a solid background in math and science can greatly ease the transition to engineering studies.