Hey
1) Deemed university status is granted by UGC to autonomous universities which work on very high standards in the specific area of study whereas Autonomous colleges are affiliated by any Government university but follow their own grade system for their academic courses instead of following the university's syllabus.

2) Deemed universities award their own degree while autonomous colleges have no such privilege. 

3) Deemed university is more free and flexible as compared to the Autonomous college.

Hope it helps!

• The main difference between a Autonomous and a deemed university is that, a deemed university is more free and flexible as compared to the Autonomous Universities.
• A deemed university is a college or institution with a name of the university. Under autonomous university, many institutes and colleges can fall, however under deemed universities, there is a single college or institution only.
• Apart from that, a deemed university cannot be run only by offering course in various subjects. There has to be some research field also that should run under the university. This condition is not necessary for the autonomous University.
• All an autonomous University needs is to set up a college under it with the norms of the Human Resources Department.
• The Deemed University is a university that has the right to carry on its own educational affairs. This includes the conduct of examination and set up of the syllabus. However, the Autonomous Universities have to consider a particular time for all the colleges under it..