If you decide to keep it, consider a third party warranty (this thread, start here)
You should definitely check other sources to see if there might be equity (probably not?)
Even at 0% interest, at 72 months, your payment goes up $100. If you like the car and are planning to write a check, maybe? Or if you aren’t at all payment conscious.
You didn’t mention state so not sure what the tax situation might be, but I’d work that out and look at financing/buyout numbers before making a decision.