Don't get pumped.
As of 6 September 2026, the cheapest Premium Unleaded 98 in Western Australia is 195.0c per litre at Independent, Meadow — versus the Western Australia average of 232.1c (0.7c below the national average of 232.8c). Across 845 stations, Premium Unleaded 98 ranges from 195.0c to 297.9c, so filling a 50-litre tank at the cheapest station saves about $18.55 over the state average. Over the past week the WA average has risen 12.0c.
Compare Premium Unleaded 98 across 845 stations in Western Australia. Updated 06:42 AM, 06 Sep 2026.
Over the past 90 days, Premium Unleaded 98 in Western Australia has averaged 210.8c per litre, peaking at 238.0c on 27 August and bottoming out at 187.1c on 1 July — a range of 50.9c. Over the past week the WA average has risen 12.0c. Timing a fill-up around that range matters: on a 50-litre tank, filling at the period low instead of the peak saves $25.45.
| Month | Average Premium Unleaded 98 |
|---|---|
| April 2026 | 210.0c |
| May 2026 | 216.4c |
| June 2026 | 208.5c |
| July 2026 | 201.5c |
| August 2026 | 230.3c |
The cheapest Premium Unleaded 98 price in Western Australia right now is 195.0c per litre, across 845 stations tracked. The cheapest suburb right now is Beckenham at a 215.3c average across 2 stations. Filling a 50-litre tank at the cheapest station instead of a station charging the state average of 232.1c saves $18.55. 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 Premium Unleaded 98 is 232.1c per litre — 0.7c below the national average of 232.8c. Prices at individual stations range from 195.0c to 297.9c, a spread of 102.9c that shows how much shopping around can save. Over the past week the WA average has risen 12.0c. Petrolmate computes this average from every station reporting Premium Unleaded 98 in Western Australia via the official government price feed, refreshed twice daily.
Burk is currently the cheapest brand for Premium Unleaded 98 in Western Australia at 217.7c per litre average across 16 stations. The gap between the cheapest brand (Burk, 217.7c) and the priciest in our list (7-Eleven, 229.6c) 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 90 days, Premium Unleaded 98 in Western Australia has averaged 210.8c per litre, peaking at 238.0c on 27 August and bottoming out at 187.1c on 1 July — a range of 50.9c. Over the past week the WA average has risen 12.0c. 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.