I think I am qualified to answer this question as I graduated from IIT Madras Aeronautics department and I am working for Boeing in the USA.

You should choose IIT Madras due to following reasons:-

• Aeronautical Engineering is one of the evolving and emerging domains in India and has a huge growth potential.
• Dual Degree is a more research-oriented degree. 
• According to the statistics, among the students pursuing dual degree programs in Aeronautics from IIT Madras, 90% are placed with good packages.
• IIT Bhubaneswar has a NIRF ranking 47th with IIT Madras at 1st.
• The Average salary for IIT Bhubaneswar Electrical Program is 19 LPA.
• The Average package for IIT Madras Aerospace Engineering is 21 LPA.
• The Highest package for IIT Madras Aerospace Engineering is 66 LPA.

For more detail Refer - https://www.iitbbs.ac.in/index.php/home/placement-2023

https://internship.iitm.ac.in/downloads/P&I_Report_22-23.pdf

Mechanical Engineering at IIT Bhubaneswar is better than Naval and Architecture Engineering at IIT Madras. I have limited knowledge about IIT Madras, but I can guide you through IIT Bhubaneswar.

• IIT Bhubaneswar is a reputed academic institution offering excellent curriculums and research facilities.
• IIT Bhubaneswar offers a four-year full-time Btech course.
• The placement record for 2023 was amazing, with 82% of students being placed.
• The highest package is INR 21.28 LPA, and the median package is INR 12 LPA.
• Top recruiters hiring from IIT Bhubaneswar are Amazon, Google, Flipkart, Dell and more.

Both Civil Engineering at IIT Madras and Mechanical Engineering at IIT Bhubaneswar are great options for students to pursue. However, if you ask me I have limited knowledge about IIT Madras but being a student of IIT Bhubaneswar I can share some insights on the institution.

• The Mechanical Engineering department at IIT Bhubaneswar offers excellent academic curriculums, research opportunities, and placement opportunities as well.
• It is an undergraduate full-time program for four years.
• In 2023, around 82% of the students were placed in this department with a median package of INR 12 LPA.
• Some of the top recruiters were Google, Amazon, Microsoft and more.

Both IIT Bhubaneswar and BITS Pilani are good institutions with decent Mechanical Engineering programs. So it’s hard to choose one institute over another. But because of its government status and affordable fee-structure, IIT Bhubaneswar is a better choice. 

Despite being a new IIT, the Mechanical Engineering program at IIT Bhubaneswar is quite good. The department offers well-experienced faculty members and state-of-the-art laboratories. IIT Bhubaneswar recently signed MoUs with many universities for various purposes like research and student exchange.

These foreign universities include- University of Warwick, University of Southampton, University of Massachusetts Dartmouth, University of Western Ontario, University of New York, University of North Dakota USA, and McGill University. This means excellent research and internship opportunities for the students of IIT Bhubaneswar.

Here are the placement details for IIT Bhubaneswar and BITS Pilani:

IIT Bhubaneswar offers equally good placements for core branches like Mechanical, and it is also much more affordable. Thus, I would recommend you choose IIT Bhubaneswar over BITS Pilani for B.Tech in Mechanical Engineering. 

I am a second year B.Tech Mechanical student at IIT Bhubaneswar. NIT Surathkal is a top ranked NIT, but joining Mechanical Engineering at IIT Bhubaneswar has its own advantages:

• One of the best things about BTech in Mechanical Engineering at IIT Bhubaneswar is that it welcomes interdisciplinary studies and extracurricular pursuits like athletics, music, dancing, fine arts, entrepreneurship, social work, projects, and internships. 

• The faculty and academic atmosphere of the Mechanical Department at IIT Bhubaneswar is very student-friendly. The department has excellent faculty members with expertise in core concepts as well as high-impact research in various specialisations.

Here is a comparison between NIT Surathkal IT and IIT Bhubaneswar Mechanical for your reference:

Out of personal experience, I can assure you that B.Tech Mechanical at IIT Bhubaneswar is a good choice in terms of academics and placements. Rest, the choice depends on your personal preference. 

IIT Hyderabad offers an excellent curriculum for Mechanical Engineering.

• IIT Hyderabad offers a wide range of subjects like Engineering Mathematics, Strength of Materials, Engineering Mechanics, Fluid Mechanics, Thermodynamics, Manufacturing Processes, Heat Transfer, Machine Design, Control Systems, Robotics, Computational Fluid Dynamics, Materials Science, Engineering Drawing, Industrial Engineering, Automobile Engineering, Renewable Energy Systems and more.
• IIT Hyderabad Mechanical students also get the opportunity to undertake internships, and research projects and also get hands-on practical training as a part of their well-structured curriculum.
• Some of the core mechanical engineering jobs that the students of IIT Hyderabad get offered after the completion of the course involve roles directly related to the field of mechanical engineering.
• Students can get jobs in fields like manufacturing, energy, automotive, aerospace, and more.

The cut-offs for IIT Goa for mechanical engineering for 2024 are expected to be opening cut-offs of 10361-10371 in the Gender Neutral category and closing cutoff of 13480-13490 in the Gender Neutral category.

For female Mechanical Engineering candidates, the cutoffs are expected to be 21060-21027 in 2024. Given below is the list of expected cut-offs:

The average package for mechanical engineering students at IIT Dharwad in the year 2023 was INR 8.25 LPA while the highest package offered was INR 9.44 LPA.

The placement statistics for other courses is also given below.