The ACCC Just Got Its Biggest Fuel Brief in Years and It May Not Be Enough
Something shifted in Australia's petrol regulation last week, and unless you've been watching Canberra closely, you probably missed it. While everyone was focused on the Strait of Hormuz and whether we'd run out of fuel, a quieter battle started playing out between the Treasurer's office, the competition watchdog, and the big fuel retailers. And honestly? It might matter more to your wallet than the geopolitics.
Here's what happened. On March 3, Treasurer Jim Chalmers fired off a letter to the ACCC with a message that, translated from political speak, essentially read: *we know what you're up to, fuel retailers, and we're watching*. His actual words were more measured but no less pointed. Unfolding events, he wrote, "should not be used as an excuse for retailers to gouge customers or to increase prices opportunistically above and beyond the impacts of events in the Middle East."
That same day, ACCC Commissioner Anna Brakey fronted the cameras and reminded fuel companies that her agency "will not hesitate to take action" against anyone breaching competition and consumer laws. Strong words. But here's the question nobody in Canberra seems keen to answer: can the ACCC actually do anything about it?
The Numbers That Triggered the Crackdown
To understand why the government moved so fast, you need to look at what happened in Brisbane on March 3. At 9am, regular unleaded across South East Queensland sat at 213.9 cents per litre. Expensive, sure, but reflecting the global turmoil. By 10am, roughly 40 stations had hiked to 219.9 cents. By the next morning, 259 stations (nearly half of all sites in the region) had followed suit.
That's a 6 cent jump in under 24 hours. And here's the thing that got RACQ fuming: global oil price movements typically take about two weeks to flow through to Australian bowsers. Two weeks. Not two days.
RACQ's Principal Economic and Affordability Specialist didn't mince words, calling out major retailers for leading the charge and labelling the increases "unjustified." They went further than a media release. They formally referred the companies to the ACCC for investigation into potentially unconscionable conduct.
RACQ's 4BC radio interview was even more direct: "The market is failing consumers."
What the ACCC Can Actually Do (and What It Can't)
This is where the story gets uncomfortable for anyone hoping the government will swoop in and fix things.
The ACCC has been monitoring fuel prices since December 2007. That's nearly two decades of quarterly reports, price tracking across 190 plus regional locations, and analysis of retail margins. The Treasurer renewed that monitoring direction in December 2025, extending it for another five years from January 2026.
But monitoring isn't the same as controlling. The ACCC cannot set fuel prices. It cannot cap margins. It cannot tell a servo in Parramatta or Dandenong what to charge. What it can do is investigate collusion (retailers secretly agreeing to hike prices together), unconscionable conduct (exploiting a crisis to extract unfair profits), and misleading representations (lying about why prices went up).
The problem? Academic research has consistently found it "extremely difficult" for the regulator to detect price gouging in Australian fuel markets. The information asymmetry between massive oil companies and the watchdog is enormous. Fuel companies know their cost structures intimately. The ACCC has to piece it together from quarterly reports and market data.
Put bluntly: the ACCC is bringing a clipboard to a gunfight.
The [Mobil](/brand/mobil) Case Shows Teeth Do Exist
Before you write off the watchdog entirely, consider what happened in February. The Federal Court ordered Mobil Oil Australia to pay $16 million in penalties for making false or misleading representations about fuel sold at nine stations in north and central Queensland.
The case was damning. Between August 2020 and July 2024, Mobil sold fuel branded as "Mobil Synergy" at those stations, implying it contained special performance additives. It didn't. The fuel was identical to the unadditised product at any other servo. Customers paid premium prices for standard fuel.
The court calculated the penalty based on roughly $20.55 per affected transaction, across $50.74 million in revenue from those nine sites. Mobil cooperated, admitted liability, and was ordered to publish corrective notices and implement a compliance programme.
So yes, the ACCC has teeth. But the Mobil case took years to investigate and prosecute. It dealt with clear, provable misrepresentation (the additives literally weren't in the fuel). Proving "price gouging" during a geopolitical crisis is a fundamentally different challenge, because retailers can always point to "market uncertainty" and "supply risk" as justification.
How Other Countries Handle This
Australia's approach to fuel pricing is, by international standards, remarkably hands off. We monitor, we warn, and occasionally we prosecute after the fact.
Contrast that with Belgium, where the government sets a maximum price for petrol. Motorists there pay among the lowest fuel costs in Western Europe. The International Energy Agency has actually criticised Brussels for maintaining these price controls, arguing they distort markets, but Belgian drivers probably aren't losing sleep over that critique.
Across the European Union, Article 102 of the Treaty on the Functioning of the European Union allows regulators to sanction companies using dominant market positions to impose "unfair purchase or selling prices." It's a broader tool than anything the ACCC currently wields.
In the United States, 37 states have specific price gouging statutes that activate during declared emergencies, with penalties ranging from fines to criminal prosecution.
Australia? We have general consumer law provisions and an overworked regulator. The Labor government signalled on March 8 that it wants to "crack down" on fuel price gouging, with proposed increases to expiation fees (from $550 to $1,100) and maximum court penalties (from $10,000 to $20,000). Whether those numbers are enough to deter companies generating billions in revenue is another question entirely.
What's Really Driving Your Price at the Bowser
Let's put the current situation in perspective with some numbers that matter.
Every litre of petrol you buy includes 51.6 cents in fuel excise, indexed twice a year to CPI (it went up again in February 2026, with an indexation factor of 1.019). On top of that, there's GST calculated on the entire price including the excise. So the government is collecting tax on its own tax. That's been the case since the GST was introduced in 2000, and no government has shown any appetite to change it.
When Sydney drivers were paying 211.9 cents for unleaded last week, roughly 70 cents of that went straight to the government in excise and GST. The international benchmark price (Singapore Mogas 95) accounted for perhaps 110 to 120 cents. Shipping, refining margins, and terminal costs ate another 10 to 15 cents. Which leaves the retailer's margin at somewhere between 7 and 15 cents per litre on a good day.
That margin is where the gouging debate lives. When retailers bump it from 10 cents to 20 cents during a crisis week, that's doubling their take. On a 50 litre tank, you're paying an extra $5. Multiply that across millions of fill ups and the numbers become very real.
The Panic Premium
There's an uncomfortable truth the government won't say out loud. Panic buying makes gouging easier. When Melbourne drivers formed queues over a kilometre long and United Petroleum suspended normal operations citing supply pressure, retailers faced a simple choice: hold prices and risk running dry, or raise prices and manage demand. Most chose the latter.
Energy Minister Chris Bowen pointed out that reserves sat at 36 days of petrol and 34 days of diesel, the highest in over a decade. The panic was largely unjustified. But try telling that to someone watching their local servo tick over to 240 cents in Sydney.
What You Can Actually Do
While Canberra works out whether its watchdog has enough bite, here's what actually helps your wallet right now.
Don't fill up during a panic spike. Those 259 Brisbane stations that jumped to 219.9 cents? Many had competitors within 10 kilometres still sitting at 213.9. The price spread during a crisis is always wider than normal, which means shopping around pays off more, not less.
Watch the wholesale lag. When international prices spike, it genuinely takes 10 to 14 days to hit Australian terminals. Retailers who jump the price immediately are banking on your assumption that the increase is already justified. Often it isn't yet.
Use price comparison tools. Services like Petrolmate track real time prices across thousands of stations. The difference between the cheapest and most expensive servo in your suburb can be 15 to 20 cents during volatile periods. On a 60 litre tank, that's $9 to $12.
Fill up mid week. The price cycle hasn't disappeared just because there's a crisis on. Perth, Adelaide, and Melbourne still show predictable patterns if you know where to look.
The ACCC's new five year monitoring brief and the Treasurer's pointed letter might eventually produce real consequences for retailers who took the opportunity to pad their margins. But the machinery of regulation moves slowly. Your ability to compare prices and fill up strategically moves fast. In the current environment, that's your best defence.
The fuel industry rarely gets this kind of regulatory spotlight. Whether it leads to meaningful reform or fades once the crisis passes will tell us a lot about how seriously Australia takes consumer protection at the bowser. Keep an eye on this space.
