Find the cheapest Costco fuel today - Live prices at 7 stations
Compare Costco pump prices across Australia. Current range: 227.7c to 237.7c/L. Average: 231.8c/L.
By the Petrolmate Data Team · Last updated 13 October 2026 · Sources: NSW FuelCheck, QLD Fuel Price Reporting, SA Fuel Pricing Information, VIC Fair Fuel, WA FuelWatch, NT MyFuel, and Tasmania FuelCheck
Cheapest Costco stations right now
| # | Station | Suburb | Price |
|---|---|---|---|
| 1 | Costco Kilburn | Blair Athol, SA | 227.7c |
| 2 | Costco Casuarina | Casuarina, WA | 228.7c |
| 3 | Costco Perth Airport | Perth Airport, WA | 228.7c |
| 4 | Costco Epping (Members Only) | Epping, VIC | 231.7c |
| 5 | Costco Ardeer (Members Only) | Ardeer, VIC | 231.7c |
Costco is 14.1c cheaper than the market average
Costco operates 7 fuel stations across 4 states and territories in Australia. Current unleaded prices range from 227.7c to 237.7c per litre (AUD), with an average of 231.8c/L. On average, Costco prices are 14.1c/L below the Australia market average of 245.9c/L. The cheapest Costco prices are in South Australia (227.7c/L), while Australian Capital Territory is higher at 236.7c/L.
PetrolSMART. Smart Fuel Insights
PetrolSMART Price Intelligence
73% of stations suggest waiting might save you money
Price Cycle Overview
Distribution of stations across cycle phases in Costco
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Based on historical price patterns in Costco, Sunday tends to offer the best prices. Sunday can offer decent prices as weekend rush dies down.
Cheapest Costco Stations Right Now
Costco Prices by State
| State | Stations | Min Price | Avg Price | Max Price |
|---|---|---|---|---|
| Victoria | 3 | 231.7¢ | 233.7¢ | 237.7¢ |
| Western Australia | 2 | 228.7¢ | 228.7¢ | 228.7¢ |
| Australian Capital Territory | 1 | 236.7¢ | 236.7¢ | 236.7¢ |
| South Australia | 1 | 227.7¢ | 227.7¢ | 227.7¢ |
Costco Prices by Fuel Type
| Fuel Type | Stations | Cheapest | Average |
|---|---|---|---|
| Ethanol 10% | 6 | 227.7¢ | 229.2¢ |
| Premium Diesel | 8 | 264.7¢ | 271.5¢ |
| Premium Unleaded 98 | 11 | 248.7¢ | 253.7¢ |
| Unleaded Petrol | 7 | 227.7¢ | 231.8¢ |
How Costco Compares
Average unleaded prices compared to other major brands
Market average: 245.9c/L
Popular Costco Locations
No location data available.
Find Cheap Costco Fuel Near You
Use Petrolmate to compare live fuel prices and save money every time you fill up.
Search Costco StationsCostco Deep Insights
Costco offers members-only fuel at consistently low prices, typically 10-20c below market average.
Price Trend Analysis
7-Day Trend
30-Day Trend
30-Day Range
Price Distribution
Where Costco stations fall on the price spectrum:
Median Price
Standard Deviation
Price Spread
Best Day to Fill Up at Costco
Cheapest Costco Suburbs
Costco operates in 7 suburbs across Australia
Most Expensive Costco Suburbs
Competitive Position
Cheapest In
Below Average In
Rating
Most competitive in: Epping, Canberra Airport ACT, Moorabbin, Ardeer, Perth Airport
Available Fuel Types
- Ethanol 10% at 6 stations (from 227.7c, avg 229.2c)
- Premium Diesel at 8 stations (from 264.7c, avg 271.5c)
- Premium Unleaded 98 at 11 stations (from 248.7c, avg 253.7c)
- Unleaded Petrol at 7 stations (from 227.7c, avg 231.8c)
Smart Savings Tips for Costco
- Fill up on Monday to save up to 5.3c/L compared to Sunday
- Best value at Blair Athol (227.7c average)
- Look for stations in the bottom 25% (under 228.7c) for best deals
- Use Petrolmate to compare Costco with other brands in your area before filling up
Where to find the cheapest Costco today
Based on Petrolmate's live price feeds, the lowest-priced Costco station in Australia is Costco Kilburn in Blair Athol, SA, selling unleaded fuel at 227.7c per litre — that is 4.1 cents per litre below the Costco network average of 231.8c/L. The next cheapest Costco sites are Costco Casuarina (Casuarina) at 228.7c, followed by Costco Perth Airport (Perth Airport) at 228.7c.
At 231.8c/L on average, Costco currently sits 14.1 cents below the national market average of 245.9c/L, making Costco one of the better-value major-brand options when it is convenient.
Prices last updated: 13 October 2026 at 11:06 PM AEST | Based on 30 days of historical data