Finance

What Affects Your Car Loan Interest Rate in Australia?

  •  
5min
26/8/2025
Nathan Hanna
Director

If you’re planning to buy a car, one of the first things you’ll want to know is: what interest rate will I get on my car loan? Your car loan interest rate will have a huge impact on how much you end up paying over time, so it’s worth understanding exactly what factors lenders look at.

As a Perth finance broker, we get this question every day. The truth is, car loan interest rates in Australia can vary widely depending on your situation, your lender, and the type of loan you choose.

In this guide, we’ll break down the key factors that affect your interest rate and how working with the best finance broker in Perth can help you secure the most competitive deal.

1. Your Credit History

Your credit score is one of the first things lenders look at. A strong credit history usually means access to lower rates, while missed payments, defaults or too many recent enquiries can push your rate higher.

Tip: Even if your credit isn’t perfect, a broker can often connect you with lenders who specialise in helping clients with average credit.

2. Employment and Income Stability

Lenders want to know that you can comfortably repay your car loan. Being employed full-time with a stable income is ideal, but contractors and self-employed people can still get car loans. You may just need to provide extra documents such as tax returns or BAS statements.

Tip: The more consistent your income looks on paper, the stronger your case for a lower rate.

3. Loan Amount and Term

The size of your loan and how long you borrow for both affect your interest rate. In general:

  • Larger loans can be seen as higher risk to the lender which may mean higher rates.
  • Longer loan terms give more time for risk so rates can be slightly higher compared to shorter terms.

Tip: Borrow only what you need and consider a shorter term if you want to reduce the overall interest paid.

4. Secured vs Unsecured Car Loans

  • Secured car loans: The car is used as security for the loan. This lowers the lender’s risk and usually means lower interest rates.
  • Unsecured car loans: No asset backing the loan. This increases the risk so interest rates are generally higher.

Tip: Most car loans in Australia are secured but knowing the difference helps you make the right choice.

5. The Car Itself

Yes, the vehicle you choose can affect your interest rate too. New cars are considered less risky than older cars so lenders often offer lower rates for brand-new vehicles compared to used ones.

Tip: If you’re financing a second-hand car, make sure it meets lender requirements around age and condition.

6. The Lender You Choose

Not all lenders are the same. Banks, credit unions and specialist finance companies all have different policies, products and rates. This is where using a Perth finance broker makes a big difference because we compare options across multiple lenders so you don’t have to.

Why Work With a Finance Broker in Perth?

Getting the lowest possible car loan interest rate isn’t just about ticking the right boxes. It’s also about knowing which lender is the best fit for you. As one of the best finance brokers in Perth, Hanna Lending:

  • Shops around on your behalf
  • Matches you with the right lender for your circumstances
  • Helps you avoid unnecessary credit enquiries that can hurt your score
  • Speeds up the approval process so you can get on the road faster
  • Provides personalised support at every step

The Bottom Line

Your car loan interest rate in Australia depends on a mix of factors including your credit history, income, loan size, loan term, whether it’s secured or unsecured, and even the car you choose.

The good news is you don’t have to figure it all out on your own. Working with a trusted Perth finance broker gives you the best chance of securing a competitive rate that fits your budget.

At Hanna Lending, we make car finance simple, transparent and stress-free. With more than 250 five-star reviews, our clients know we deliver results.

Subscribe to Optic Insights

Get industry insights that you won't delete, straight in your inbox.
We use contact information you provide to us to contact you about our relevant content, products, and services. You may unsubscribe from these communications at any time. For information, check out our Privacy Policy.
Nathan Hanna
Director
Nathan has 10 years experience as a finance broker, helping Australians find the right loan. Nathan will work with you to get your next asset or personal finance.

More insights

Finance

Real Stories: How We Helped Perth Locals Get the Cars They Wanted, Fast

When it comes to buying a car, speed matters. Nobody wants to waste weeks waiting for finance to come through or face unnecessary roadblocks.

Read Article
Finance

Pre-Approval for Car Loans: What It Is and Why It Helps You Negotiate

If you’re shopping for a new car, one of the smartest moves you can make is getting pre-approval for your car loan.

Read Article
Car Loans

How Fast Can You Get Approved for Car Loans in Perth? (And What You’ll Need)

When you’re ready to buy a car, the last thing you want is to wait around for loan approval. One of the most common questions we get asked as a Perth finance broker is: how fast can I get approved for a car loan?

Read Article