WA Fuel Prices – Week of 31 August 2026

Perth drivers are facing a U91 metro average of 204 c/L this week, and it's the third consecutive week the price has climbed. The increases are modest, but the trend is real, and understanding how prices moved day by day can save you a meaningful amount at the pump this week.

WA Fuel Price Snapshot: 31 August to 7 September 2026

Rural WA drivers are paying 20.5c/L more than metro for U91, which adds up fast over a full tank. A 60-litre fill costs roughly $12 more if you're outside the metro area, before you've even factored in the distance you likely drove to get there.

How WA Petrol Prices Moved Day by Day This Week

The intra-week pattern is worth paying attention to. U91 metro opened the week at a low of 197.7c/L on Monday 31 August, climbed sharply through Tuesday and Wednesday, peaking at 209.1c/L on Wednesday 2 September. That's an 11.4c swing in just two days. Prices then eased through Thursday and Friday before levelling out around the 203-204c/L mark for the weekend. Rural prices stayed far more stable throughout, barely moving more than 1.6c across the entire week.

WA Metro Station Price Range and Cheapest Fuel Brands

Shopping around in Perth can make a serious difference. The cheapest metro station this week was Vibe Oakford Truckstop at 186.2c/L, while the most expensive was BP Karnup Roadhouse at 228.9c/L. That's a 42.7c/L gap between the cheapest and dearest metro options, which on a 60-litre fill is more than $25 in your pocket or theirs.

Brand averages tell a similar story. Among brands with at least three metro stations, Burk averaged just 190.6c/L, with Solo at 193.4c/L and Liberty at 194c/L not far behind. At the other end, BP averaged 210c/L and Ampol 209.5c/L. That's nearly a 20c/L gap between the cheapest and priciest brands, which is one of the most compelling arguments for checking prices before you pull in anywhere.

Which Day Was Cheapest Last Week

Last Monday, 31 August, was the cheapest day to fill up in metro Perth, with U91 sitting at 197.7c/L. If you caught that low, you did well. The price climbed more than 11c over the following two days before retreating, a reminder that Perth's well-known price cycle is alive and active.

WA Metro Petrol Price Forecast for the Coming Days

The metro U91 forecast suggests prices will hold close to current levels in the short term. The model puts Sunday 7 September at 203.6c/L (78% confidence), Monday 8 September at 204.5c/L (71% confidence), and Tuesday 9 September at 205.5c/L (65% confidence). All three days sit within about 1.5c of the current metro average of 204c/L, so no dramatic moves are expected immediately, though that confidence narrows as the week progresses.

For context, WA's metro U91 average of 204c/L is 0.8c below the national metro average of 204.8c/L, making WA one of the cheaper states to fill up right now.

How to Save on Fuel in WA This Week

The 30-day metro U91 range runs from a low of 179.9c/L to a high of 229.9c/L, and the current 204c/L sits almost exactly in the middle. You're not catching the cycle at its cheapest, but you're not at its worst either. With three straight weeks of increases, keeping an eye on the price trend before your next fill is worthwhile. Diesel dipped slightly this week, down 0.4c to 245.5c/L metro, which is a small but welcome move for trade and freight drivers. The diesel premium over U91 sits at 41.5c/L, which is notably wide and worth considering if you're weighing up running costs on a diesel vehicle.

If you can be flexible about which brand you use and check prices before heading out, the data this week shows you could realistically save close to 20c/L just by choosing Burk or Solo over BP or Ampol.

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