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And as to how much it will affect an auto loan it would be nice to know what the late account was (i.e. was it an auto loan, credit card, utility bill?). How long ago did it occur? And what previous auto loan history do you have showing on your credit reports? Auto loans can be more forgiving of erratic histories on non-auto accounts as the loan is secured by an actual asset (the car) versus unsecured like a credit card. A prior positive auto loan history can count for a lot. A prior negative auto loan history can doom an otherwise good credit profile.