Petrol Prices Australia 2026: 242c a Litre, Your Fuel Bill

Australia's national average unleaded price was 242.1 cents a litre in the week ending 18 October 2026, according to the Australian Institute of Petroleum, up from 181.0c in the week ending 1 March. That is 61.1c more per litre: about $30.55 extra to fill a 50-litre tank, or around $1,271 a year for a household using 40 litres a week. The ACCC's latest report shows big-city prices easing slightly to 236.2c on 21 October, but they remain far above pre-conflict levels.

News reports track the daily price. This article turns it into your household number, then gives you a practical fuel toolkit so you can decide when and where to fill up, and how to stop the extra cost from swallowing the rest of your budget.

Where petrol prices stand right now

Two official reports give the clearest picture:

• AIP, week ending 18 October 2026: national average 242.1c a litre, up 1.6c on the week. Metro average 240.7c, regional 244.9c. Hobart (250.0c) and Darwin (249.0c) were the dearest capitals; Adelaide (236.8c) the cheapest.
• ACCC weekly report, 23 October 2026: average petrol in the five largest cities fell 5.7c to 236.2c on 21 October. That is still 65.3c above 20 February, before the Middle East conflict, but 21.0c below the 31 March peak. Diesel averaged 276.6c.

Why so high? Crude oil remains expensive: the ACCC put Dated Brent at a weekly average of US$136 a barrel to 21 October. Fuel excise, which was cut on 31 March, was fully restored on 2 August 2026. The possible good news: the international petrol benchmark (Singapore Mogas 95) fell during the week, and the AIP notes retail prices usually follow wholesale with a lag of one to two weeks. The ACCC warns prices "continue to be volatile", so nothing is guaranteed.

What this costs your household

Yearly fuel bill at today's price (illustrative)

Calculation: litres per week × 52 × price. "Extra" compares 242.1c with 181.0c. Regional drivers paying 244.9c pay slightly more.

For a family doing school runs and a commute on 40 litres a week, that extra $1,271 a year is about $24 every week. It arrives on top of 4.3% inflation in September and a possible Melbourne Cup rate rise (see what September's CPI costs you and your Cup Day repayment).

"$24 a week doesn't feel like a crisis at the bowser. Over a year it's $1,271 that has to come from somewhere."

Your 7-tool fuel toolkit

1. Know your number. Check your last four weeks of fuel receipts or bank transactions. Multiply your weekly spend by 52. That is your fuel budget line, not a guess.
2. Use the price cycle (big cities). The ACCC confirms petrol in Sydney, Melbourne, Brisbane, Adelaide and Perth moves in regular cycles. In Perth, prices jumped about 10c in one day on 21 October. Filling at the bottom of the cycle instead of the top can save roughly 10c a litre: about $208 a year at 40 litres a week. Diesel does not cycle.
3. Use an official price app. NSW FuelCheck, WA FuelWatch (which publishes tomorrow's prices) and similar state tools show prices near you. A 5c gap between stations on the same road is common.
4. Don't chase a cheap servo too far. Driving 10 km out of your way can burn around a litre in many cars, which can cancel a small saving.
5. Check E10 compatibility. If your car's manual allows E10, it is often cheaper per litre. Never use it if your manufacturer says not to.
6. Combine trips. One planned weekly loop for shopping and errands uses less fuel than several short trips from a cold start.
7. Ring-fence fuel money. Move your weekly fuel amount into a separate account or envelope on payday so the extra cost doesn't drain grocery or bill money.

Diesel, regional towns and what to watch next

If you drive a diesel, the squeeze is bigger: the ACCC put the big-city diesel average at 276.6c on 21 October, a full 100.0c above 20 February, and diesel does not follow the weekly cycles that let petrol drivers time their fill-ups. Regional drivers pay more too, with the AIP's regional petrol average at 244.9c, about 4.2c above the capital cities. The next ACCC weekly report and the AIP's figures for the week ending 25 October will show whether the mid-October fall in Singapore petrol prices has reached the bowser. For more ways to save at the pump, see our earlier petrol savings guide. With the national average above 240c for several weeks, this is a squeeze worth planning around for months, not weeks.

If fuel costs are pushing you behind on bills, Moneysmart (ASIC) has free budgeting tools, and the National Debt Helpline (1800 007 007) offers free financial counselling. If you receive Centrelink payments, our Centrepay changes checklist covers what changes on 1 November. And if news about the conflict driving these prices feels overwhelming, talking to someone you trust or a professional can help.

FAQ

Will petrol prices go down in Australia?
Possibly in the short term: the international petrol benchmark fell in mid-October and retail prices usually follow wholesale with a one-to-two-week lag. But the ACCC says prices remain volatile because of geopolitical developments, so no one can promise a fall.

Why is petrol so expensive right now?
Crude oil has been high since the Middle East conflict began in early 2026, with Brent averaging US$136 a barrel in the week to 21 October, and full fuel excise has applied again since 2 August 2026.

What day is petrol cheapest?
It depends on your city's price cycle, which varies. In Perth, FuelWatch publishes the next day's prices. Elsewhere, use your state's price app to see where you are in the cycle.

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Educational content only. Not personalised financial advice.