Secured vs Unsecured Car Loan

The choice between a secured and unsecured car loan is, in most cases, the difference between a rate starting with a 7 and a rate starting with a 12. The trade-off is whether you accept the lender registering an interest over the vehicle on the PPSR. For most buyers, accepting the security is the clear answer. The exceptions matter though, and this guide walks through what each option actually does and when each one fits.

How a secured car loan works

When you take a secured car loan, the lender registers a security interest over the vehicle on the Personal Property Securities Register. The PPSR is a federal public register that records security interests over goods and assets. Anyone (a future buyer, an insurer, a creditor) can search it to see whether a vehicle has finance owing on it.

Practically, the registration sits in the background. You drive the vehicle, register it with your state road authority, insure it, and service it as normal. The registration only becomes meaningful in two scenarios. First, if you default on the loan, the lender can repossess and sell the vehicle. Second, if you try to sell the vehicle before the loan is fully repaid, the security must be discharged (usually by paying out the loan) before the new buyer takes clear title.

How an unsecured personal loan works

An unsecured personal loan does not register a security over the vehicle. The lender relies on your creditworthiness alone (income, credit history, debt-service ratio). If you default, the lender pursues the debt as an unsecured creditor, which is materially harder to recover than seizing a registered asset.

That risk is priced in. Unsecured personal loan rates in May 2026 sit between 11.95 and 16.95 per cent for prime borrowers. The same borrower would access secured rates between 7.45 and 8.95 per cent. The reason borrowers ever take unsecured for a vehicle purchase is usually a specific eligibility issue: the vehicle is too old, the loan is too small, or the buyer wants to keep the asset off any registered security.

The rate gap, in dollars

When secured is the right choice

• The vehicle is under 12 years old at end of loan term, which covers the vast majority of new and used purchases.
• You plan to own the vehicle for the full loan term, or to sell it through a process that involves paying out the loan.
• You are comfortable with the lender holding a registered security and the vehicle showing on the PPSR.
• You want the lowest available rate.

When unsecured is the right choice

• The vehicle is older than 12 years at end of loan term and most lenders decline secured finance on age grounds.
• The vehicle is specialty (kit cars, classics, project vehicles) and the lender will not accept it as security.
• The loan amount is small (under about $10,000) and the establishment cost of secured finance outweighs the rate saving.
• You want the option to modify, dispose of, or transfer the vehicle without lender consent.

The PPSR registration in practice

The PPSR registration is recorded against the vehicle\'s VIN. It costs the lender a small fee (currently $7) and is registered for the duration of the loan. Once you pay out the loan, the lender is required to remove the registration. In practice the removal happens within a few weeks. If you are about to sell the vehicle, search the PPSR yourself first to confirm the registration has been removed. PPSR searches cost $2 each through the federal register.

A common mistake is selling a vehicle privately while the registration is still active. The buyer can later discover the registration and either return the vehicle for a refund or claim against you. Always confirm the discharge has happened before listing for sale.