Best Auto Refinance Companies in 2026

PenFed is a sensible first application for many borrowers because its fee structure is clear. No document or origination fees means the saving from a lower rate is not eaten by upfront charges. Loan amounts up to $150,000 and terms up to 84 months also give room for different budgets and vehicle values.

Membership is easy to join, usually by opening a savings account, though membership is needed to accept a loan. The trade-off is process: PenFed borrowers handle the old loan payoff and title change themselves, where some marketplaces handle those steps. For a borrower comfortable with paperwork, that trade is worth the lower fees.

LightStream, a division of Truist, offers unsecured auto loans, which sets it apart from most refinance lenders. Because the loan is not secured by the car, it can work for older vehicles, private-party purchases, and cars that other lenders will not finance. No fees and no prepayment penalty keep the total cost transparent.

The catch is credit. LightStream targets borrowers with strong credit, and its rates for many borrowers are higher than secured credit union rates. Its quoted rates also assume AutoPay, with a higher rate for invoice payment. Compare a LightStream offer directly against a secured offer before choosing the unsecured route.

Navy Federal serves members with a military, Department of Defense, or National Guard connection, plus their families. For eligible borrowers, it offers competitive rates, no common fees, and long terms on new vehicles. A refinance bonus has also been offered for refinancing a loan from another lender, subject to current terms.

Eligibility is the main limit. Borrowers without a qualifying connection cannot join, and preapproval may involve a hard credit pull rather than a soft prequalification. Eligible borrowers should still compare the offer against PenFed, because the better rate depends on term, vehicle, and credit.

Caribou works as a marketplace and guide, helping borrowers check rates and move through refinancing with support. A soft credit check for the initial rate check means comparing offers does not immediately affect a credit score. That support helps borrowers who find payoff and title paperwork confusing.

Availability and rate range need attention. Caribou is not available in every state, and its advertised range covers a wide span of credit profiles. The value is in the actual offer and the help with process, not in the lowest rate shown on a marketing page.

myAutoloan lets a borrower submit one application and receive offers from several lenders. That comparison saves time and shows how rates differ for the same borrower and vehicle. For a borrower who wants to shop without visiting each lender site, that single form is the main appeal.

The minimum loan amount matters. Borrowers with a small remaining balance may not qualify, and the final terms still depend on the chosen lender. Use myAutoloan to compare, then read the winning lender terms in full before accepting, including fees, term, and prepayment rules.

Gravity Lending focuses on refinancing with no lender fees, paired with personal service through the process. For borrowers with strong credit, that combination can produce a clean saving: a lower rate without an origination charge eating the first months of benefit. Customer service is often cited as a strength in reviews.

A hard credit pull may be needed to see firm offers, so borrowers shopping widely should plan the order of applications. Gravity also works through a smaller network than the largest marketplaces, so a borrower who wants the widest comparison may still want a second check elsewhere.

RefiJet suits borrowers who prefer a person to guide the refinance, rather than a self-serve online form. The service matches a borrower to lenders, explains options, and helps with steps that can stall a refinance. Published rate ranges are wide, reflecting the range of credit profiles it serves.

That guided style is not for everyone. Borrowers who want to compare quickly online, without calls, may prefer Caribou or myAutoloan. RefiJet also earns referral fees from some partners, so borrowers should still compare the final offer against a direct credit union quote.

Digital Federal Credit Union, known as DCU, offers credit union pricing with a discount for electric vehicles in some offers. Its approach of applying the same rate to new and used vehicles, where offered, simplifies comparison for buyers of used cars. As a credit union, it also tends to pair lower fees with member service.

Membership is required to borrow, and loan limits, vehicle age, and mileage rules still apply. DCU is best used as a direct comparison against PenFed and Navy Federal, especially for used cars and electric vehicles, where its rate structure may produce a better result.