Do you have to repay the debt after reposession?

Depends. Usually the item is sold and the balance owed will be paid by the proceeds of that sale. You may also have monies coming to you.

Example. you buy car for 25000

you paid 15000 (at time of repo) still owed 10000

Sale of vehicle was 8000

you still owe 2000

or

Sale of vehicle was 11000

THEY owe YOU 1000

Hope this helps....