Costco Fuel Prices in Western Australia

As of 19 October 2026, Costco sells Unleaded Petrol in Western Australia from 224.7c per litre across 2 stations, averaging 224.7c — 20.6c below the Western Australia average of 245.3c. The cheapest Costco Unleaded right now is 224.7c at Costco Perth Airport.

Compare Costco prices across 2 stations in Western Australia. Updated 10:49 PM, 19 Oct 2026.

Western Australia data source: Petrolmate sources Western Australian prices directly from WA FuelWatch, the WA Government's 24-hour rule price scheme — WA retailers must publish their next-day prices by 2pm and hold them for 24 hours. We sync at 6am Perth time (9am AEDT).
Unleaded Petrol (224.7c)
Premium Unleaded 98 (247.7c)
Diesel (251.7c)
251.7c
Average Diesel
251.7c
Cheapest
251.7c
Highest
2
Stations

Cheapest Costco Diesel in Western Australia

Costco Perth Airport
Perth Airport • 142 Dunreath Dr...
251.7c
Costco Casuarina
Casuarina • 137 Market St...
251.7c

Costco in Western Australia Insights

Costco by Suburb

Casuarina (225c)Perth Airport (225c)

Compare Brands in Western Australia

BrandAvg ULPStations
Burk229.0c13
EG Ampol230.7c23
Vibe232.6c50
Atlas233.0c18
Metro234.5c7
United234.5c31
Caltex235.0c86
Petro Fuels237.8c10

Related Pages

Costco Nationally Western Australia All Brands ULP in Western Australia Diesel in Western AustraliaCostco in New South WalesCostco in VictoriaCostco in QueenslandCostco in South Australia