Retail petrol prices were lower in all capital cities and on average across regional locations in the June quarter 2025, according to the ACCC's latest quarterly petrol monitoring report.
Quarterly average retail petrol prices across the five largest cities (Sydney, Melbourne, Brisbane, Adelaide and Perth) were 175.7 cents per litre (cpl), a decrease of 6.5 cpl from the previous quarter. Among the five largest cities, prices decreased the most in Brisbane (by 14.4 cpl).
The decrease in average retail prices mainly reflected lower international prices for refined petrol (largely driven by international crude oil prices). A higher average AUD-USD exchange rate also helped make the cost of international refined petrol relatively less expensive in Australian dollar terms.
Crude oil prices predominantly trended downward in the quarter, as trade tensions impacted financial and commodity markets. Another influence was the Organisation of the Petroleum Exporting Countries (OPEC) and other crude oil producing countries including Russia (together, OPEC+) agreeing to a further unwind of production cuts.
"Crude oil prices jumped in mid-June following impacts from the Israel-Iran conflict, but they settled and decreased toward the end of June," ACCC Commissioner Brakey said. "The jump in international prices contributed to average retail petrol prices across the five largest cities briefly moving higher in early July, before reducing shortly after."
The following figure shows the movements in average retail petrol prices across the five largest cities from July 2023 to July 2025.
Seven-day rolling average retail petrol prices across the five largest cities in nominal terms
Source: ACCC calculations based on data from Informed Sources.
Notes: The grey shaded area in the figure represents the June quarter 2025. The blue shaded area in the figure represents July 2025 (the month after the June quarter 2025 ended). A 7-day rolling average price is the average of the current day's price and prices on the 6 previous days.
Across the five largest cities, seven-day rolling average retail petrol prices increased to 180.6 cpl at the end of the quarter. By the end of July average prices decreased to 168.3 cpl.
Petrol gross indicative retail differences were 16.4 cpl across the five largest cities in the June quarter, an increase of 2.0 cpl from the previous quarter. Gross indicative retail differences are a broad indicator of gross retail margins and include both retail operating costs and retail profits.
Average retail petrol prices were lower in the smaller capital cities and on average across regional locations
In Canberra, Hobart and Darwin, quarterly average retail petrol prices also decreased. Quarterly average retail petrol prices in Canberra decreased the most among the eight capital cities (by 17.0 cpl).
Across more than 190 regional locations that the ACCC monitors, average retail petrol prices (in aggregate) were 179.2 cpl, a decrease of 5.1 cpl from the previous quarter.
"We were pleased to see lower prices across most locations in Australia in the quarter, providing some relief to motorists," Ms Brakey said.
Retail diesel prices were also lower in all capital cities
Across the five largest cities, quarterly average retail diesel prices were 178.4 cpl, a decrease of 8.5 cpl from the previous quarter.
Quarterly average retail diesel prices decreased in all capital cities. Diesel prices dropped the most in Hobart (by 13.3 cpl), followed by Sydney and Melbourne (by 10.4 cpl).
Retail diesel prices generally follow international diesel benchmark prices, which accounted for the largest component of retail diesel prices.
The ACCC welcomes a fuel price transparency scheme in Victoria
In August 2025, the Victorian Government made new regulations requiring fuel retailers to provide timely fuel price data as soon as practicable, and no more than thirty minutes after a change in price. This follows the government's announcement of its Fair Fuel Plan earlier in the year. The pricing data is expected to be available to motorists on the Service Victoria app later this year.
"We encourage motorists to shop around for lower fuel prices as there is often a range of prices available," Ms Brakey said.
"We have long been an advocate of fuel prices transparency schemes. This fuel price reporting and subsequent publishing will give motorists in Victoria access to near real-time fuel price data."
Victoria is the last jurisdiction in Australia to establish a fuel price transparency scheme.
Annual average retail petrol and diesel prices were lower in the 2024-25 financial year
The ACCC's latest report also provides results for the 2024-25 financial year. Across the five largest cities, annual average retail petrol prices were 180.1 cpl, a decrease of 15.0 cpl, or around 8 per cent from 2023-24 (195.1 cpl).
Annual average petrol gross indicative retail differences across the five largest cities were 15.9 cpl, which was the same as the 10-year average, in real (inflation adjusted) terms.
Across the five largest cities, annual average retail diesel prices were 181.9 cpl, a decrease of 18.1 cpl, or around 9 per cent from 2023-24 (200.0 cpl).
The decreases in average retail petrol and diesel prices largely reflected lower international prices for refined petrol and refined diesel.
In each capital city, annual average retail petrol prices in cents per litre, and the change from 2023-24 were:
In each capital city, annual average retail diesel prices in cents per litre, and the change from 2023-24 were:
