Which one is better- IIT Gandhinagar or IIT Hyderabad for mechanical engineering?

The worth and credibility of any department of a particular institute can be determined by the faculty pool of that concerned department. Generally,

• Many faculty members working in different specializations mean that the students get to learn from a variety of courses. This helps you in exploring your interests better.
• A large number of professors also imply that you will definitely find a person working in your area of interest with whom you can work on projects.

The Mechanical Engineering department of IIT Hyderabad specifically, has an extensive faculty pool of many professors that are specialties in diverse fields. IIT Gandhinagar’s Mechanical Engineering department isn't necessarily inferior, but a major part of the faculty pool comprises temporary visiting professors.

Thus for Mechanical Engineering, IIT Hyderabad is a better option than IIT Gandhinagar.