It's likely that somewhere in the paperwork that you signed there was a disclaimer that stated the term agreement was based upon bank approval. If the financial institution supplying the loan won't approve you for the 5 year loan there's not much the dealer can do to change it. Try speaking directly to a loan officer at the bank. If you can add a co-signer to the loan or inform them of additional income that was not included on the original application it may change the outcome.

