The question everyone asks before buying a car
You need a car. You have two options: take out a car loan now and drive away this week, or save up over the next 12–24 months and pay cash. Both feel reasonable. But when you run the actual numbers, the difference in total cost can be thousands of dollars — and not always in the direction you expect.
Use the Car Loan Calculator and Savings Goal Calculator together to model your specific situation. This article explains the framework behind the comparison.
What a car loan actually costs you
A typical Australian car loan in 2026 runs between 7% and 14% per annum, depending on your credit score, whether the car is new or used, and whether it's secured against the vehicle. On a $25,000 loan over 5 years at 9% p.a., you'll repay roughly $31,800 in total — that's $6,800 in interest on top of the purchase price.
The monthly repayment on that loan is around $518. If you can already afford $518 per month in repayments, you could theoretically save that same amount and reach $25,000 in about 48 months — without paying a dollar of interest.
So why do so many people still choose loans? Because waiting 4 years has its own cost.
The real cost of waiting to save
Saving first means 4 years of relying on an older, higher-maintenance car — or catching Ubers, buses, and lifts. If your current car costs an extra $150/month in repairs and running costs compared to the newer model you'd buy, waiting 48 months costs you $7,200 in hidden expenses. That's almost exactly what the loan interest would have cost.
There's also the practical reality: some people need a reliable car now. A tradie without a ute can't work. A parent with an unreliable car can't get kids to school safely. In these cases, financing isn't financially suboptimal — it's the only functional option.
When saving first wins
Saving first beats borrowing when:
- Your current car is reliable enough to last your savings period
- You can earn a meaningful return on your savings (high-interest savings accounts in Australia currently pay 4.5–5.5% p.a.)
- The loan rate offered to you is high (14%+ for used cars with bad credit, for example)
- You lack the discipline to save without a forced mechanism — though a loan provides this too
Use the Compound Interest Calculator to model what $500/month growing at 5% looks like over 3 years. You might get there faster than you think.
When financing makes sense
Taking a loan wins when:
- You can get a low rate (under 7%) on a new car through manufacturer finance
- Your current car situation is costing you money or limiting your income
- You have strong earning capacity but haven't had time to accumulate savings
- The car is a depreciating asset you want to drive now, not later
Some manufacturer finance deals — particularly for new vehicles — offer 0–2.99% promotional rates. At those rates, there's virtually no penalty for financing. Put your cash in a 5% savings account and let it grow while you drive the new car on their money.
The hybrid approach most people miss
A third option often outperforms both extremes: save a large deposit, then finance the remainder. A 40% deposit on a $30,000 car means you only borrow $18,000. The smaller loan reduces total interest, improves your rate tier, and shortens the repayment period.
Good books on personal finance decision-making include Australian personal finance guides on Amazon — particularly titles focused on debt management and cash flow optimisation.
Run your own comparison
The only comparison that matters is yours. Plug your numbers into the Car Loan Calculator to get your total interest cost, then into the Savings Goal Calculator to see your realistic savings timeline. If the gap is small, your lifestyle needs should break the tie.