FuelRadar Weekly Fuel Report: 25 May to 31 May 2026

Published: 4 June 2026

Welcome to the latest FuelRadar weekly fuel report. Across the nation, Australian motorists are finally seeing some welcome relief at the petrol bowser. For the week ending 31 May 2026, fuel prices experienced a predominantly downward trend across most capital cities and regional centres. With global oil benchmarks softening and local discounting cycles taking effect, average Unleaded 91 (U91) prices have fallen noticeably, providing an excellent opportunity for drivers to optimise their fuel spending.

Current fuel prices and prediction

Broad Price Drops: Almost all major capital cities saw a decline in Unleaded 91 prices this week, with the national average settling at 182.31 cents per litre (cpl).
Standout Savings: Adelaide currently boasts the cheapest U91 in the country, averaging just 173.94 cpl, closely followed by Perth at 178.88 cpl.
Major City Cycles: Sydney and Perth experienced the most significant weekly drops in U91, falling by 8.59 cpl (-4.6%) and 9.81 cpl (-5.4%) respectively, indicating strong discounting phases.
Diesel Plummets: Diesel drivers are seeing substantial savings, particularly in Canberra where average diesel prices plummeted by an astonishing 34.54 cpl (-13.25%).
Regional Relief: Regional centres like Toowoomba (179.68 cpl) and Cairns (179.82 cpl) are currently outperforming several capital cities for cheap Unleaded 91.

Capital City Price Comparison

The table below outlines the price movements for Unleaded 91 across Australia's capital cities over the past week. Note: Prices have been converted to dollars per litre for ease of comparison.

City	Fuel Type	Average Price	Min Price	Max Price	Price Change	Percent Change	Trend
Sydney	Unleaded 91	$1.83	$1.78	$1.87	-$0.09	-4.60%	Falling
Melbourne	Unleaded 91	$1.84	$1.81	$1.86	-$0.04	-2.38%	Falling
Brisbane	Unleaded 91	$1.84	$1.81	$1.86	-$0.04	-2.40%	Falling
Perth	Unleaded 91	$1.79	$1.72	$1.86	-$0.10	-5.40%	Falling
Adelaide	Unleaded 91	$1.74	$1.71	$1.77	-$0.06	-3.62%	Falling
Canberra	Unleaded 91	$1.84	$1.83	$1.84	-$0.02	-0.98%	Stable
Hobart	Unleaded 91	$1.86	$1.84	$1.88	-$0.03	-1.78%	Falling
Darwin	Unleaded 91	$1.89	$1.87	$1.91	-$0.03	-1.72%	Falling

Price Trends by Fuel Type

When we analyse the broader market, we can recognise distinct trends across different fuel grades. Below is a summary of the national averages and the extremities of the market for each major fuel type.

Fuel Type	National Average	Cheapest City	Most Expensive City	Overall Trend
Unleaded 91	$1.82	Adelaide ($1.74)	Darwin ($1.89)	Falling
E10	$1.78	Adelaide ($1.67)	Townsville ($1.82)	Falling
Premium 95	$1.98	Adelaide ($1.91)	Darwin ($2.06)	Falling
Premium 98	$2.07	Adelaide ($1.99)	Darwin ($2.21)	Falling
Diesel	$2.24	Perth ($2.13)	Canberra ($2.51)	Falling
Premium Diesel	$2.28	Adelaide ($2.17)	Canberra ($2.52)	Falling
E85	$2.37	Brisbane ($2.30)	Melbourne ($2.50)	Stable

Looking Ahead

Over the next three to four weeks, we anticipate that the eastern seaboard capitals (Sydney, Melbourne, and Brisbane) will continue their current discounting cycles. Motorists in these cities who have travelled extensively over the weekend should hold off on fully refuelling if they can, as prices are likely to dip further before the cycle resets and prices spike again.

In Adelaide, prices are currently at the bottom of their cycle. History tells us that these heavily discounted prices will not last long. If you are in South Australia, we highly recommend fuelling up immediately before the inevitable price hike occurs.

For diesel drivers, the massive drops witnessed this week—particularly the 34-cent plunge in Canberra and the 12-cent drop in Newcastle—suggest that wholesale diesel savings are finally being passed on to the consumer. We expect diesel prices to remain relatively stable or fall slightly further as we head deeper into June.

Save Money with FuelRadar

With fuel prices constantly fluctuating and price cycles varying wildly from city to city, finding the best deal in your area can save you significant money over time. The FuelRadar app is your essential tool for locating the cheapest petrol and diesel prices in your neighbourhood, updated in real-time.

FuelRadar's user-friendly interface allows you to quickly compare prices across different service stations, helping you make informed decisions before fuelling up. The app's map feature shows you exactly where to find the best deals, ensuring you never pay a premium at the bowser and saving you both time and money.

Available on both iOS and Android mobile devices, FuelRadar puts the power to save directly in your hands. Whether you are commuting to the city centre or planning a regional road trip, you can also access the service via our website at fuelradar.com.au/map for easy desktop planning.

Don't let unpredictable price cycles drain your wallet. Download the FuelRadar app today and join thousands of Australian motorists who are saving on every single fill-up!

Conclusion

This week has brought a much-needed reprieve for motorists across the country, with prices falling across almost all fuel types and regions. By staying informed and tracking the price cycles in your specific capital city or regional centre, you can take full advantage of these discounting phases. We will continue to monitor the wholesale market and local retail trends to ensure you have the most accurate data to keep your motoring costs to a minimum. Safe travels!