Hello!

Listed below are some of the mechanical engineering colleges in Maharashtra-

1. IIT Bombay - Indian Institute of Technology
2. COEP Pune - College of Engineering
3. VJTI Mumbai - Veermata Jijabai Technological Institute
4. BVUCOE Pune - Bharati Vidyapeeth Deemed University College of Engineering
5. VIT Pune - Vishwakarma Institute of Technology
6. SIT Pune - Symbiosis Institute of Technology
7. AIT Pune - Army Institute of Technology
8. KJ Somaiya College of Engineering, Mumbai

However, to get into these institutions, you'll have yo clear national/institutional entrance exams.

Hope this helps!