Last Aug. I went 30 days past due on my car payment. How much does this continue to hurt my fico? Will it hurt less now that it is 12 months since it was late? Or will I have to wait another 12 months to see an improvement in my scores? Would it help that the 30 days past due was 1 year ago if I wanted to trade?

7 years; although after 24 months it will hurt less.

A solitary 30 day late over a year old on an auto loan probably will have almost no effect on your ability to get a loan and minor impact on the terms offered. A solitary 30 day late on an auto loan over 24 months old is likely to have very minor if at all any effect.

agree with hoapres