I have informed the bank of the same, however, they say that it is not within their authority to transfer the loan?.
There is no obligation on the part of the bank to transfer the loan to a third party, hence it would be better you repay the entire loan and get the vehicle transferred to the buyer through RTO.
Also, apart from the loan liability, would I still be liable for accident/crime on the same car despite the agreement on stamp paper.
The loan agreement and record of transferring or handing over the possession of the vehicle may help you absolve from the accident or any other liability.
I'm relocating abroad, so I might not be in a situation to file a suit if the purchaser does not pay up the EMIs.
Once you are not in the country, it would be very difficult to pursue the recovery process. Taking advantage of your absence in the country, the buyer may play havoc by which all your efforts to recover the same from a remote location may not yield any fruit. Therefore do not under take a risk of entering into a loan or EMI short of a thing which may result into loss to you.