Don't get pumped.
Compare Premium Diesel across 449 stations in Western Australia. Updated 07:47 PM, 13 Jun 2026.
Over the past 45 days, Premium Diesel in Western Australia has averaged 225.7c per litre, peaking at 254.5c on 29 April and bottoming out at 202.4c on 13 June — a range of 52.1c. Over the past week the WA average has fallen 8.3c. Timing a fill-up around that range matters: on a 50-litre tank, filling at the period low instead of the peak saves $26.05.
| Month | Average Premium Diesel |
|---|---|
| May 2026 | 231.3c |
| June 2026 | 206.1c |
The cheapest Premium Diesel price in Western Australia right now is 181.3c per litre, across 449 stations tracked. The cheapest suburb right now is Oakford at a 184.0c average across 2 stations. Filling a 50-litre tank at the cheapest station instead of a station charging the state average of 201.5c saves $10.10. 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 Diesel is 201.5c per litre — 4.9c below the national average of 206.4c. Prices at individual stations range from 181.3c to 247.9c, a spread of 66.6c that shows how much shopping around can save. Over the past week the WA average has fallen 8.3c. Petrolmate computes this average from every station reporting Premium Diesel in Western Australia via the official government price feed, refreshed twice daily.
Burk is currently the cheapest brand for Premium Diesel in Western Australia at 185.3c per litre average across 3 stations. The gap between the cheapest brand (Burk, 185.3c) and the priciest in our list (7-Eleven, 202.7c) is 17.4c per litre — about $8.70 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 45 days, Premium Diesel in Western Australia has averaged 225.7c per litre, peaking at 254.5c on 29 April and bottoming out at 202.4c on 13 June — a range of 52.1c. Over the past week the WA average has fallen 8.3c. 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.