My girlfriend just bought a new car and now we're shopping rates. She is doing it as an 84 month loan to keep the payment manageable and plans to pay it down when she has extra money or with her tax return (at least $2k to the loan every April). That said, her credit isn't great and we currently have a 4.2% rate on the table from Dodge that we're trying to beat. Any suggestions on where to look is appreciated.