What the US-Iran war means for Australian petrol prices
By Daily Direct Team · 16 March 2026
Two Victorian towns ran out of fuel this weekend.
Robinvale exhausted its supply on Saturday evening. Hattah followed on Sunday. Both communities — hours from the nearest major city — were left with empty bowsers and no clear timeline for resupply.
It sounds like a local logistics story. It isn't. What happened in north-west Victoria this weekend is a preview of what Australians face if the conflict between the United States, Israel, and Iran continues to escalate.
The chokepoint at the centre of everything
The Strait of Hormuz is a narrow stretch of water between Iran and Oman, roughly 33 kilometres wide at its narrowest point. About 20% of the world's oil supply passes through it every day — including a substantial portion of what ends up in Australian fuel tanks.
Since the US and Israel began striking Iranian military and energy infrastructure earlier this month, that chokepoint has become the most consequential piece of ocean on earth. Iran has threatened to close it. The US is now pressing allies — including Australia — to send warships to keep it open. Trump this week publicly called on China, the UK, Japan, and South Korea to deploy naval forces. The UK's Energy Secretary Ed Miliband confirmed Britain is considering minesweeping drones. Japan said it faces "high hurdles" to participate. Australia said it is watching "cautiously."
If the strait closes — even temporarily — the consequences for global energy markets would be immediate and severe.
Australia's uncomfortable secret
Australia is one of the most fuel-vulnerable developed nations on earth.
The country imports more than 90% of its liquid fuel. It holds strategic reserves well below the 90-day minimum recommended by the International Energy Agency. This is not a new problem — it has been flagged by defence analysts, energy experts, and politicians for over a decade.
This week, former Deputy Prime Minister Barnaby Joyce — now a One Nation MP — publicly admitted he regrets not doing more to fix it when he had the chance. "I failed to act," Joyce told reporters, acknowledging Australia's dangerously thin fuel stockpiles and their exposure to exactly the kind of shock now unfolding.
The admission is notable not because it is surprising, but because even Joyce's critics would struggle to disagree with his diagnosis. Australia's strategic fuel reserve sits at roughly 28 days of consumption. In a prolonged Hormuz closure, that number matters a great deal.
What Chalmers is already warning
Treasurer Jim Chalmers this week flagged that inflation is set to exceed 4.5%, driven largely by the Middle East conflict. Economists are now widely expecting the RBA to raise interest rates, potentially twice before June.
The mechanism is straightforward: higher oil prices flow through to petrol prices within weeks, then into transport costs for food, goods, and services — raising the cost of almost everything. Australia's geographic isolation means it has limited ability to quickly substitute supply sources the way landlocked European nations can route around disruptions via pipeline.
For households already under significant cost-of-living pressure, the timing is brutal. Petrol prices in major cities have already risen noticeably since the conflict began. The question is how much further they go.
The scenarios
If the conflict ends quickly: US Energy Secretary Chris Wright this week predicted the war would conclude "in the next few weeks." Oil markets would stabilise, prices would ease, and Australia's fuel vulnerability would remain a serious structural problem that everyone goes back to ignoring.
If the conflict drags on: Iran has signalled it believes it can outlast its adversaries. Iran's Foreign Minister flatly rejected Trump's claim that Tehran had sought a ceasefire. If strikes on Kharg Island — Iran's primary oil export facility, which the US has already threatened — continue, global supply disruptions could deepen significantly before any resolution is reached.
If the strait closes: The IEA has already moved to release emergency oil stocks to Asia, an intervention described as unprecedented in scale. Canada and Norway are aligning on energy security messaging. India is pursuing diplomatic channels with Tehran. These moves reflect how seriously the global energy establishment is treating the tail risk of a genuine supply shock.
What this means for you at the bowser
In practical terms: expect petrol prices to remain elevated for the duration of the conflict, with upward pressure if escalation continues.
Regional Australians — like the residents of Robinvale and Hattah who ran dry this week — are most exposed. Long supply chains, thin local inventory, and limited alternative options mean supply disruptions hit harder and faster outside major cities.
For city drivers, the impact will be felt primarily in the wallet. The national average petrol price was already elevated before this week's developments. Each 10% rise in global crude oil prices translates, roughly, to a 3–4 cent per litre increase at the pump. We are already well past that threshold since the conflict began.
The longer question
The deeper issue the conflict has exposed is structural: Australia has known about its fuel vulnerability for years and done almost nothing about it.
Joyce's admission this week was a rare moment of political honesty. But the problem predates his tenure, extends through multiple governments, and reflects a bipartisan failure to treat energy security as the strategic priority it clearly is.
The Strait of Hormuz crisis — whether it resolves quickly or escalates further — is a reminder that for a large, isolated, fuel-dependent nation, the distance between a geopolitical flashpoint and an empty bowser in a small Victorian town is shorter than most Australians realise.
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