Retail petrol prices fell across every capital city and on average in regional Australia in the June quarter of 2025, the Australian Competition and Consumer Commission says in its 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), down 6.5 cpl from the previous quarter. Brisbane recorded the largest quarterly fall among those cities, sliding 14.4 cpl.
The ACCC said the decline mainly reflected lower international prices for refined petrol, largely driven by drops in crude oil, while a stronger average AUD‑USD exchange rate reduced the cost of imported product in Australian dollar terms. Crude oil prices trended down through the quarter amid trade tensions and as OPEC and allied producers, including Russia, agreed to unwind some 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.”
Seven‑day rolling average retail petrol prices across the five largest cities rose to 180.6 cpl at the end of the quarter, the ACCC’s data show, before easing to 168.3 cpl by the end of July.
Petrol gross indicative retail differences — a broad indicator of gross retail margins that includes both retail operating costs and retail profits — were 16.4 cpl across the five largest cities in the June quarter, an increase of 2.0 cpl from the prior quarter.
Smaller capitals and regional areas also saw falls. Canberra, Hobart and Darwin recorded quarterly declines, with Canberra seeing the largest drop among the eight capital cities at 17.0 cpl. Across more than 190 regional locations monitored by the ACCC, the aggregate average retail petrol price was 179.2 cpl, down 5.1 cpl.
“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 fell in every capital city as well. Across the five largest cities, the quarterly average retail diesel price was 178.4 cpl, a reduction of 8.5 cpl. The biggest diesel falls were in Hobart (down 13.3 cpl), followed by Sydney and Melbourne (each down 10.4 cpl). The ACCC noted diesel prices generally follow international diesel benchmark prices, which make up the largest component of retail diesel costs.
The report also highlighted regulatory change in Victoria. In August 2025 the Victorian Government introduced regulations requiring fuel retailers to supply timely price data as soon as practicable and no more than 30 minutes after a price change; that information is expected to be made available to motorists via 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 now the final Australian jurisdiction to put a fuel price transparency scheme in place.
On an annual basis, the ACCC reported lower average fuel costs for 2024–25. Across the five largest cities, annual average retail petrol was 180.1 cpl — about 15.0 cpl (roughly 8 per cent) lower than 2023–24, when it averaged 195.1 cpl. Annual average retail diesel across the five largest cities fell to 181.9 cpl, down 18.1 cpl (around 9 per cent) from the previous financial year. The ACCC attributed those falls largely to lower international prices for refined petrol and diesel.
