Why Fuel Prices Move the Used Car Market
Fuel prices may not change what a car is worth overnight, but they can affect how buyers judge value.
Fuel Costs as a Factor in Resale Value
Age, condition, kilometres, service history, model popularity and supply still drive resale value. However, when fuel prices stay high, less efficient vehicles may attract fewer enquiries or face more negotiation on price.
Rather than assuming your car has lost value, watch what comparable vehicles are actually doing in the market.
How Buyers Weigh Running Costs When Fuel Is Expensive
Buyers are often thinking beyond what a car costs to purchase. They may also estimate how much they’ll spend to use it week to week.
For example, someone driving long distances every day may pay close attention to litres per 100 kilometres because even a small difference in fuel consumption can add up over a year. A buyer who only uses the car for short weekend trips may care much less.
Best Time to Sell When Fuel Prices Are High
There’s no single “perfect” time to sell a petrol car when fuel prices are high. What matters more is whether the cost of running your particular vehicle is starting to affect buyer interest.
Petrol vs Diesel: Different Pressure, Different Timing
Petrol and diesel don’t always move in step, so the pressure on buyers can differ depending on what your car runs on. In 2026, for example, Australian diesel prices rose much more sharply than petrol prices following the escalation of conflict in the Middle East. By 9 September, average diesel prices across the five largest cities were 77.1 cents per litre above their 20 February level, compared with a 39.0 cents per litre increase for petrol.
Rather than waiting for petrol and diesel prices to move together, keep an eye on how long the increase affecting your vehicle lasts and what comparable cars are doing during that period.
Large or Thirsty Vehicles: Sell Before Demand Softens Further
High fuel costs can matter more for vehicles that already use a lot of fuel. Buyers may still want the size, power or capability they offer, but the running-cost trade-off becomes more noticeable when every tank costs more.
If you already intend to sell a larger SUV, V8, performance car or other fuel-hungry vehicle, it may be worth acting while comparable models are still attracting healthy interest.
Signs the Market Is Turning Against Your Vehicle Type
A few signs can suggest demand is starting to soften:
- More similar cars are appearing for sale
- Asking prices are being reduced
- Cars like yours are staying listed for longe
- More efficient alternatives are similarly priced
The EV and Hybrid Shift: What It Means for Your Resale
Petrol and diesel cars still make up a large part of Australia’s used market, but electrified vehicles are taking a growing share. In the first half of 2026, used EV sales rose 54.6% year on year, while hybrids were the most resilient fuel type when it came to pricing.
Rising EV and Hybrid Uptake and Pressure on ICE Vehicles
Greater choice doesn’t mean demand for internal combustion engine (ICE) vehicles disappears. However, older or less efficient models may face stronger competition as buyers compare them with hybrids, plug-in hybrids and fully electric vehicles with lower day-to-day fuel costs.
How to Position Your Car When Listing
Include accurate kilometres, service history, condition and key features, along with clear photos. If fuel economy is a strength, include the official consumption figure rather than vague claims about being “cheap to run”.
How Cycles Work City by City
Sydney, Melbourne, Brisbane, Adelaide and Perth typically experience petrol price cycles, where prices rise sharply before gradually falling again. The length of those cycles varies significantly by city: in 2025, the average was around five weeks in Sydney, six in Melbourne, six and a half in Brisbane, two and a half in Adelaide and one week in Perth. Diesel generally doesn’t follow the same cycle pattern.
It’s also worth remembering that cycles can be disrupted. Since the Middle East conflict began in February 2026, the ACCC says regular cycles have mostly not occurred in Sydney, Melbourne, Brisbane and Adelaide.
Tools To Check Live Prices Before You Commit to a Sale Date
Rather than relying on headlines, check current prices in your area. The ACCC publishes petrol buying tips and cycle charts for Australia’s five largest cities and also recommends fuel-price apps and websites to compare local retailers.
Get a No-Hassle Offer While the Market Still Wants Your Car
If you’re preparing to sell a petrol car, you don’t have to wait for fuel prices to move in your favour. With AutoFlip, you can sell your car online by connecting with more than 1,250 licensed wholesale buyers who compete to make an offer. There’s no obligation to list and no fee if there’s no sale. List your car with AutoFlip today.
