Hey Kaushal,

Yes, you can get admission in MIT Pune after diploma. The eligibility is that you must have completed diploma from an All India Council for Technical Education or Central or State Government approved Institution or its equivalent with minimum 45% score. 5% relaxation is given to backward categories.
You will have to do online registration and admissions will be based on the merit marks obtained in diploma.
You will get Lateral entry in 2nd year directly and so, the course duration will be of 3 years.
Kindly check the official website for admission process.

https://www.careers360.com/colleges/mit-academy-of-engineering-pune/btech-mechanical-engineering-lateral-entry-course

Hope this helps!

Hello,

Yes,  there are seats available in various engineering colleges of India for the students who have passed their diploma. The students can get admission through lateral entry through the counselling sessions organised by the institute. They can pursue their higher studies in engineering and can attain a satisfactory package offered by companies which come for campus placements.