Cash-out auto refinancing (refinancing your existing car loan for more than you owe and using the difference to pay off credit cards) is sometimes available but rarely a good deal. It moves unsecured credit card debt onto your auto loan at a lower rate, but extends the auto loan term, increases total interest paid on the car portion, and ties the additional debt to a depreciating asset that secures the loan. For most borrowers, a personal consolidation loan is cleaner and safer.
How auto cash-out refinance works. You apply to refinance your existing auto loan with a new lender. The new lender pays off your existing auto loan balance plus issues additional cash to you. Total new auto loan amount = old payoff + cash to you. The vehicle is collateral for the entire amount.
The math example. Borrower has a $15,000 balance on a 5-year-old auto loan at 7%, with a vehicle worth $22,000. They have $8,000 in credit card debt at 22% APR. Cash-out auto refinance: new loan of $23,000 ($15,000 to pay off old loan + $8,000 cash to pay credit cards) at 8.5% over 60 months.
Old auto loan: $15,000 at 7% with about 36 months remaining. Total interest remaining: about $1,650.
Credit cards: $8,000 at 22% over 36 months at minimum payments: about $3,400 in interest.
Old totals over 36 months: about $5,050 in interest.
New cash-out auto loan: $23,000 at 8.5% over 60 months. Monthly payment: $471. Total interest: about $5,260.
Net change: roughly $200 more in total interest, plus 24 extra months of debt service, plus the cards stay open and could be refilled.
Why this often doesn't work mathematically. Auto cash-out refinance typically extends the term significantly. The lower rate gets eaten by the longer payoff. And cars depreciate; you can end up underwater on the loan (owing more than the car is worth) for an extended period.
Where it does work.
You have an unusually high-rate auto loan and great credit now. If you have a 14% auto loan from a previous credit struggle and your score is now 720+, refinancing the auto portion alone (without cash out) can save substantially. Adding cash-out for credit cards is a second decision; evaluate separately.
Significant equity in the vehicle. Most auto cash-out lenders require LTV below 100-110% (some go to 125%, but rarely above). A $22,000 car with $10,000 owed has substantial equity; a $15,000 car with $14,000 owed has none.
Specific lenders that offer it. Capital One Auto, RoadLoans, OpenRoad Lending, Caribou, Rate Genius, and some credit unions offer auto cash-out refinance. Most major banks and most online personal lenders don't.
Why a personal loan is usually better.
Doesn't extend the auto loan timeline. Personal consolidation loan keeps the auto loan separate; pay it on the original schedule.
Doesn't tie the new debt to the vehicle. Personal loan default damages credit but doesn't risk the vehicle. Auto cash-out refinance default risks the car going to repossession.
Comparable rates for prime borrowers. Personal loan rates of 9-12% versus auto cash-out rates of 8-10% have a small spread. Not enough to justify the term extension.
Simpler structure. Personal loan + auto loan is two separate obligations. Cash-out auto loan combines them but ties everything to the car.
Negative equity risk after cash-out. Cars depreciate 10-20% in the first year, 15-25% in years 2-3. A cash-out auto refinance can produce negative equity (owing more than the car's worth) for several years. If you total the car or want to sell, the gap between insurance settlement / sale price and the loan balance has to be paid in cash. GAP insurance protects against the totaled-car scenario but not the wanting-to-sell scenario.
What if you really want a single payment that includes both? A personal consolidation loan that covers both your auto loan and credit card debt is sometimes available, but most personal lenders prefer not to refinance auto debt (which is typically secured) into unsecured personal loans. Some credit unions offer this. The structure: $23,000 unsecured personal loan over 60 months at 9.5%. Monthly payment about $483, total interest about $5,980. Slightly more expensive than auto cash-out but unsecured (no vehicle risk).
Tax considerations. Auto loan interest on a personal vehicle is not tax-deductible. Personal loan interest used for personal purposes is not tax-deductible. Neither has tax advantages over the other. Only home-equity-secured debt used for home improvements (and within mortgage interest deduction limits) is potentially deductible.
The when-to-use-cash-out-auto checklist.
Existing auto loan rate is unusually high (12%+) and you'd refinance regardless.
Vehicle has substantial equity (over 30% of value as equity).
You can keep the new auto loan term at 36-48 months.
Cash-out portion is small relative to the auto refinance ($3,000-$8,000 max).
You have discipline to keep the cards at $0 afterward.
If most of these don't apply, use a personal consolidation loan instead.
Auto refinance without cash-out. Refinancing your existing auto loan to a lower rate, without cash-out, is often a good deal if rates have dropped or your credit has improved. This isn't consolidation; it's just a better auto loan. Treated separately, the math is straightforward: a lower rate over the same remaining term saves interest, no trade-offs.
What about a HELOC instead? A home equity line of credit at 8-9% could pay both the auto loan and credit cards. Trade-off: HELOC is variable rate, secured by your home, with closing costs. The math is sometimes better than auto cash-out but the home risk is meaningful. See consolidate debt with a home equity loan.
Auto cash-out refinance is a niche product that occasionally fits, but personal loans usually win on flexibility, simplicity, and not-tying-debt-to-the-car. Run the math before assuming it's a good deal.