How Does a Repossession Affect the Cosigner on an Auto Loan?

Updated July 9, 2026 6 min read

A repossession is usually described as something that happens to the person driving the car. On a cosigned loan, it happens to both names on the paperwork at once.

The short answer

When a financed vehicle is repossessed, the event shows up on the credit reports of both the primary borrower and the cosigner, since both are equally obligated on the debt. If the lender sells the repossessed car for less than what’s owed, the resulting deficiency balance is also the cosigner’s responsibility to pay, not just the primary borrower’s. The repossession itself, and anything that follows from it, treats both parties as one shared liability.

Why the cosigner isn’t shielded

A cosigner agrees, from the start, to be equally responsible if the primary borrower can’t or doesn’t pay — that’s the entire function of the arrangement. So when payments stop long enough to trigger repossession, the lender has no obligation to pursue the primary borrower first or exclusively. Collection efforts, and eventually repossession proceedings where applicable, can be directed at either party, and often both. This is different from what happens during a typical car repossession for a single borrower only in that there are now two credit files being affected instead of one.

The deficiency balance problem

Repossession rarely erases the debt. After the lender takes the vehicle, it’s typically sold, often at auction, and the sale proceeds are applied against the remaining loan balance. If the car sells for less than what’s owed — which is common, since repossessed vehicles often sell below market value — the difference becomes a deficiency balance that both the primary borrower and cosigner still owe. That remaining balance can be sent to collections and reported separately from the original repossession, extending the credit impact well past the day the car was taken.

What it does to the cosigner’s credit

A repossession is generally one of the more damaging marks a credit report can carry, and it appears on the cosigner’s report exactly as it does on the primary borrower’s — same account, same status, same timeline. This can affect the cosigner’s ability to qualify for their own future loans, and any related deficiency balance sent to collections adds a second negative mark on top of the original one. Negative marks like these don’t disappear immediately; they generally stay on a credit report for a set number of years even after being resolved.

What a cosigner can do once trouble starts

Once payments begin slipping, a few options exist before repossession becomes final, though none are certain and all depend on the lender’s policies:

The bottom line

Cosigning ties two credit histories to the same vehicle, and a repossession pulls both of them down together, deficiency balance included. Anyone considering cosigning is better served by treating “what if the car gets repossessed” as a real scenario to think through in advance rather than an unlikely edge case, since the consequences land on the cosigner just as fully as on the primary borrower.