Don't get pumped.
As of 22 July 2026, the cheapest Premium Unleaded 98 in Western Australia is 183.3c per litre at Burk, Bassendean — versus the Western Australia average of 205.7c (0.0c above the national average of 205.7c). Across 842 stations, Premium Unleaded 98 ranges from 183.3c to 288.0c, so filling a 50-litre tank at the cheapest station saves about $11.20 over the state average. Over the past week the WA average has risen 17.0c.
Compare Premium Unleaded 98 across 842 stations in Western Australia. Updated 06:48 AM, 22 Jul 2026.
Over the past 88 days, Premium Unleaded 98 in Western Australia has averaged 211.0c per litre, peaking at 236.1c on 1 June and bottoming out at 187.1c on 1 July — a range of 49.0c. Over the past week the WA average has risen 17.0c. Timing a fill-up around that range matters: on a 50-litre tank, filling at the period low instead of the peak saves $24.50.
| Month | Average Premium Unleaded 98 |
|---|---|
| April 2026 | 210.0c |
| May 2026 | 216.4c |
| June 2026 | 208.5c |
| July 2026 | 198.9c |
The cheapest Premium Unleaded 98 price in Western Australia right now is 183.3c per litre, across 842 stations tracked. The cheapest suburb right now is Oakford at a 187.3c average across 2 stations. Filling a 50-litre tank at the cheapest station instead of a station charging the state average of 205.7c saves $11.20. 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 205.7c per litre — 0.0c above the national average of 205.7c. Prices at individual stations range from 183.3c to 288.0c, a spread of 104.7c that shows how much shopping around can save. Over the past week the WA average has risen 17.0c. 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 188.1c per litre average across 16 stations. The gap between the cheapest brand (Burk, 188.1c) and the priciest in our list (Astron, 201.5c) is 13.4c per litre — about $6.70 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 88 days, Premium Unleaded 98 in Western Australia has averaged 211.0c per litre, peaking at 236.1c on 1 June and bottoming out at 187.1c on 1 July — a range of 49.0c. Over the past week the WA average has risen 17.0c. 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.