Don't get pumped.
As of 28 July 2026, the cheapest Unleaded Petrol in Western Australia is 172.9c per litre at Vibe, Kwinana Town Centre — versus the Western Australia average of 194.5c (0.3c above the national average of 194.2c). Across 1,167 stations, Unleaded Petrol ranges from 172.9c to 360.0c, so filling a 50-litre tank at the cheapest station saves about $10.80 over the state average. The WA average has been flat over the past week.
Compare Unleaded Petrol across 1,167 stations in Western Australia. Updated 11:56 PM, 28 Jul 2026.
Over the past 80 days, Unleaded Petrol in Western Australia has averaged 255.8c per litre, peaking at 272.3c on 6 July and bottoming out at 211.7c on 14 May — a range of 60.6c. The WA average has been flat over the past week. Timing a fill-up around that range matters: on a 50-litre tank, filling at the period low instead of the peak saves $30.30.
| Month | Average Unleaded Petrol |
|---|---|
| May 2026 | 220.4c |
| June 2026 | 260.6c |
| July 2026 | 267.9c |
The cheapest Unleaded Petrol price in Western Australia right now is 172.9c per litre, across 1,167 stations tracked. The cheapest suburb right now is Oakford at a 173.3c average across 2 stations. Filling a 50-litre tank at the cheapest station instead of a station charging the state average of 194.5c saves $10.80. See the live cheapest-stations list on this page for the exact station, address and suburb. Prices update twice daily from the official state government feed, so the cheapest station can change between the morning and afternoon updates — check again before you drive.
The current Western Australia average for Unleaded Petrol is 194.5c per litre — 0.3c above the national average of 194.2c. Prices at individual stations range from 172.9c to 360.0c, a spread of 187.1c that shows how much shopping around can save. The WA average has been flat over the past week. Petrolmate computes this average from every station reporting Unleaded Petrol in Western Australia via the official government price feed, refreshed twice daily.
OMG Metro is currently the cheapest brand for Unleaded Petrol in Western Australia at 175.4c per litre average across 4 stations. The gap between the cheapest brand (OMG Metro, 175.4c) and the priciest in our list (EG Ampol, 187.3c) is 11.9c per litre — about $5.95 per 50-litre tank. Brand averages are recalculated twice daily from official price data, so the cheapest brand can change with the price cycle.
Over the past 80 days, Unleaded Petrol in Western Australia has averaged 255.8c per litre, peaking at 272.3c on 6 July and bottoming out at 211.7c on 14 May — a range of 60.6c. The WA average has been flat over the past week. Monthly averages for the past half-year are published in the table on this page. All figures come from official Western Australia government price reporting, aggregated daily by Petrolmate.