What a subprime auto loan is and who gets one

A subprime auto loan is a car loan offered to borrowers with credit scores below 620, or those with limited credit history, recent bankruptcy, or missed payments. Lenders charge higher interest rates to offset the risk that you might not repay. The term "subprime" refers to the borrower's credit profile, not the loan itself — it is a standard product offered by banks, credit unions, and buy-here-pay-here dealerships.

You end up in the subprime market if your credit score is too low for conventional financing, even if you have steady income. This happens after missed payments, foreclosure, or simply never having built credit. Subprime lenders exist because traditional lenders will not touch these applications, so if you need a car and have poor credit, subprime may be your only option.

The catch is that the higher interest rate and stricter terms make the loan much more expensive over time and riskier if your income drops. Understanding what you are signing up for before you buy matters because the monthly payment is only part of the cost.

Key Takeaways

  • Subprime auto loans carry interest rates 5 to 10 percentage points higher than prime loans, meaning you pay thousands more over the life of the loan.
  • Lenders often install GPS trackers and starter interrupt devices that let them disable your car if you miss a payment, which can leave you stranded.
  • The loan is secured by the car itself, so the lender can repossess it quickly if you fall behind, even by a few days.
  • Subprime loans are shorter in term — often 36 to 60 months — which means higher monthly payments than a prime loan for the same vehicle.
  • Building credit through a subprime loan is possible if you make every payment on time, but one missed payment can trigger repossession or device activation.

How much higher the interest rate really is

Interest rates on subprime auto loans vary widely depending on your credit score, the lender, and the vehicle, but they typically range from 9% to 29% annually. A borrower with a credit score of 580 might pay 18% to 25%, while someone at 620 might pay 12% to 18%. By comparison, a borrower with a credit score above 740 might pay 4% to 7% for the same car.

The difference adds up fast. On a $15,000 car financed over 60 months, a 6% loan costs about $2,400 in interest. The same car at 18% costs about $7,200 in interest — nearly three times as much. At 25%, you pay over $10,000 in interest alone. You are not just paying more per month; you are paying thousands more total.

Some subprime lenders also charge origination fees, documentation fees, or GPS monitoring fees that get rolled into the loan amount, making the total cost even higher. Always ask for the annual percentage rate (APR) and the total amount you will pay over the life of the loan before signing.

Repossession risk and starter interrupt devices

Subprime auto loans are secured by the car itself, meaning the lender owns it until you pay off the loan. If you miss a payment, the lender has the legal right to repossess the vehicle — often within days, and sometimes without warning. Unlike a mortgage, where you typically get several months of missed payments before foreclosure, a car can be taken after a single late payment.

Many subprime lenders install starter interrupt devices (also called starter interrupt systems) that disable the engine if you miss a payment. The device is wired into the car's ignition system. When you miss a payment, the lender sends a signal and your car will not start. You must pay the overdue amount, plus a fee to reactivate the device, before you can drive again. This can leave you unable to get to work, pick up children, or reach medical care.

Some states regulate these devices — requiring notice before installation, limiting how many times they can be activated, or requiring a grace period — but others do not. Before signing, ask whether the lender uses starter interrupt devices and what your state's rules are. If the device is installed, get the reactivation process and fees in writing.

Why the loan term is shorter and what that means for your payment

Subprime auto loans are typically offered for 36 to 60 months, compared to 60 to 72 months for prime loans. A shorter term means higher monthly payments because you are paying back the same amount of money in less time. On a $15,000 subprime loan at 18%, a 36-month term costs about $525 per month, while a 60-month term costs about $333 per month.

The shorter term protects the lender — they get their money back faster and reduce the risk that you will default or that the car will break down before the loan is paid off. But it puts pressure on your budget. If you lose your job or face an unexpected expense, a $525 monthly payment is harder to absorb than a $333 one. Missing even one payment can trigger repossession or device activation.

When shopping for a subprime loan, compare the monthly payment against your actual take-home income. A common rule is that your car payment should not exceed 15% to 20% of your monthly gross income. If the payment is higher, the loan is risky for you even if the lender will approve it.

Negative equity and being underwater on the loan

Negative equity (or being "underwater") happens when you owe more on the loan than the car is worth. This is common in subprime lending because the high interest rate means you are paying mostly interest in the early months, while the car depreciates quickly.

For example, you buy a $15,000 car with a subprime loan at 20% interest over 60 months. After 12 months of payments, you have paid about $6,500 but still owe $11,000 on the loan. The car, meanwhile, is now worth $12,000 (it lost $3,000 in value). You are underwater by $1,000. If the car is repossessed, the lender sells it for $12,000, keeps that money, and you still owe $1,000 plus repossession and auction fees.

Negative equity also traps you in the loan. You cannot trade the car in or sell it to pay off the loan because you owe more than it is worth. You are stuck making payments on a depreciating asset, and if something goes wrong — job loss, illness, accident — you have no way out except default.

How subprime loans affect your credit score

A subprime auto loan can help build credit if you make every payment on time. Payment history is the largest factor in your credit score (about 35%), so 24 to 60 months of on-time payments will raise your score. After the loan is paid off, you may be able to refinance into a prime loan or get better rates on other credit products.

But one missed payment can wipe out months of progress. A single late payment stays on your credit report for seven years and can drop your score by 100 points or more. If the car is repossessed, the damage is worse — repossession is reported as a major delinquency and signals to future lenders that you defaulted on a secured loan. It becomes much harder to borrow money for anything after that.

Before taking a subprime loan, be honest about whether you can make every payment on time. If your income is unstable or you have other debts you are struggling with, the credit-building benefit may not be worth the risk of default.

Alternatives to subprime auto loans

If you have poor credit and need a car, subprime is not your only option. A credit union auto loan often has lower rates than subprime lenders and may work with borrowers who have credit scores in the 600 range. Credit unions are member-owned and typically more flexible than banks. You may need to join the credit union first, but membership is often free or costs a small deposit.

A co-signer — someone with good credit who agrees to repay the loan if you do not — can lower your interest rate significantly. The co-signer's credit is on the line, so choose someone who understands the risk. A co-signer does not need to be present at the dealership; they sign the promissory note and that is it.

Buying a used car with cash, even if it is older or has higher mileage, avoids a loan entirely. If you can save $3,000 to $5,000, you can buy a reliable used car outright and avoid the interest, fees, and repossession risk. This takes longer but costs far less over time.

Some nonprofits and community organizations offer car-buying programs or down payment assistance for people with poor credit. Search your city or county name plus "car buying assistance" or contact your local 211 service to find programs in your area.

Frequently Asked Questions

Can I refinance a subprime auto loan into a better rate?

Yes, if your credit score improves after making on-time payments for 12 to 24 months. At that point, you can shop for a refinance loan with a bank or credit union. The new lender pays off the old loan and you start a new one, ideally at a lower rate. You will pay refinancing fees, so calculate whether the savings are worth it before applying.

What happens if I cannot make a payment?

Contact the lender immediately — do not wait for them to contact you. Many lenders offer payment deferrals, where you skip one or two payments and add them to the end of the loan. Some offer forbearance, where payments are temporarily reduced. These options are not may provide, but asking is always worth it. If you do nothing, the lender will activate the starter interrupt device or begin repossession within days.

Is it better to buy from a buy-here-pay-here dealership or a bank?

Buy-here-pay-here dealerships (where you make payments directly to the dealer) often have higher interest rates and stricter terms than banks, but they may work with borrowers who have no credit at all. Banks typically require a credit score of at least 550 to 580. Compare the APR, monthly payment, and term from both before deciding. A bank loan is usually cheaper, but a buy-here-pay-here dealer may be your only option if your credit is very poor.

Will paying off a subprime loan early save me money?

Yes, paying off early reduces the total interest you pay. However, check the loan agreement for prepayment penalties — some subprime lenders charge a fee if you pay off early. If there is no penalty, paying extra toward principal each month or making a lump-sum payment when you can will save you hundreds or thousands in interest.

Can a starter interrupt device be removed?

Only the lender can remove it, and they will do so once the loan is paid off. Attempting to remove it yourself is illegal and voids the loan agreement. If you believe the device was installed illegally or is malfunctioning, contact your state's attorney general or a consumer protection agency for guidance.