what are the drawbacks of part-time MBA?

Part-time MBA is one option that one can look after for flexibility in timings. However this doesn't at all mean that you can take classes as per your discretion and timings. You will have to devote certain fixed amount of time but after your work hours. Looking into certain drawbacks firstly, there are only few institutes which provide part time MBA,  which means you might not be able choose an institute of your choice. Also there are certain courses which might not be offered either due to time constraints or lack of resources. In fact it has been observed that part time MBA provides fewer courses than a full time programme. One major drawback of this programme is that the credits that you earn via this are not transferable to other programs in many cases. Though it sounds part-time,  yet one must know that you might have to attend sessions only for few hours in a day,  but the entire programme might stretch to two to four years.

Few of the top colleges that provide part time MBA and for your reference are:

IIML, FMS(Delhi),  IIFT(New Delhi),  IMT(Ghaziabad),  SIBM(Pune),  NMIMS, K. J Somaiya institute of Management Studies &  Research, GIM(Goa),  IIM(Tiruchirapalli).