Car loan

I ordered myself a new car last October from car dealership in Dublin and got it delivered this week. I had agreed all the pricing and the finance option last October with the garage. The finance option I chose was a manageable monthly repayment with one baloon payment at the end of the term. When I collected the car and went in to complete the relevant finance paperwork, I was told that the dealership had changed the lending institute that they deal with and baloon payments were not an option with this new institution.
I felt that I had no option but to sign up to the straight 5 year deal this institute offered with no baloon payment.

My question , Is it possible for me now to change bank now that the car has been financed to a different bank that will offer baloon payments

A lot will depend on the 'small print' of your finance agreement - Is there a 'cooling off' period which allows you to change your mind? Is it a variable-rate loan which allows you to make additional payments without any penalty?

Hi Rainyday,
It is a variable rate and there are no penalties for early payment of the loan. The reason that I wanted to go down the route of the baloon payments was that I wanted to keep paying into my SSIA at the maximum rate

If there is no penalty for early payment, you can simply borrow the same amount from another bank at your convenience and repay the finance company in full. Focus on the APR rate that you are paying to make sure you are getting better value elsewhere.

Note that when you signed up to your SSIA, you signed a declaration to confirm that you would fund the account without recourse to further borrowing. To breach the terms of this declaration could jeopardise your SSIA benefits, though I'm not 100% clear if your approach would actually be breaking this declaration.