Find the cheapest Costco fuel today - Live prices at 8 stations
Compare Costco pump prices across Australia. Current range: 156.7c to 168.7c/L. Average: 160.2c/L.
By the Petrolmate Data Team · Last updated 06 June 2026 · Sources: NSW FuelCheck, QLD Fuel Price Reporting, SA Fuel Pricing Information, VIC Fair Fuel, WA FuelWatch, NT MyFuel, Tasmania FuelCheck, and community-verified prices
Cheapest Costco stations right now
| # | Station | Suburb | Price |
|---|---|---|---|
| 1 | Costco Kilburn | Blair Athol, SA | 156.7c |
| 2 | Costco Casuarina | Casuarina, WA | 156.7c |
| 3 | Costco Perth Airport | Perth Airport, WA | 156.7c |
| 4 | Costco Moorabbin (Members Only) | Moorabbin, VIC | 160.7c |
| 5 | Costco Epping (Members Only) | Epping, VIC | 160.7c |
Costco is 24.1c cheaper than the market average
Costco operates 8 fuel stations across 4 states and territories in Australia. Current unleaded prices range from 156.7c to 168.7c per litre (AUD), with an average of 160.2c/L. On average, Costco prices are 24.1c/L below the Australia market average of 184.3c/L. The cheapest Costco prices are in Western Australia (156.7c/L), while Australian Capital Territory is higher at 168.7c/L.
PetrolSMART. Smart Fuel Insights
PetrolSMART Price Intelligence
in last 24h
78% of stations in Costco are showing great value right now
Price Cycle Overview
Distribution of stations across cycle phases in Costco
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rise
Based on historical price patterns in Costco, Saturday tends to offer the best prices. Weekend prices tend to be higher with increased demand.
Cheapest Costco Stations Right Now
Costco Prices by State
| State | Stations | Min Price | Avg Price | Max Price |
|---|---|---|---|---|
| Victoria | 3 | 160.7¢ | 160.7¢ | 160.7¢ |
| Australian Capital Territory | 2 | 168.7¢ | 168.7¢ | 168.7¢ |
| Western Australia | 2 | 156.7¢ | 156.7¢ | 156.7¢ |
| South Australia | 1 | 156.7¢ | 156.7¢ | 156.7¢ |
Costco Prices by Fuel Type
| Fuel Type | Stations | Cheapest | Average |
|---|---|---|---|
| Diesel | 5 | 186.7¢ | 196.2¢ |
| Ethanol 10% | 8 | 156.7¢ | 160.7¢ |
| Premium Diesel | 16 | 186.7¢ | 197.3¢ |
| Premium Unleaded 98 | 16 | 172.7¢ | 182.3¢ |
| Unleaded Petrol | 8 | 156.7¢ | 160.2¢ |
How Costco Compares
Average unleaded prices compared to other major brands
Market average: 184.3c/L
Popular Costco Locations
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 8 suburbs across Australia
Most Expensive Costco Suburbs
Competitive Position
Cheapest In
Below Average In
Rating
Most competitive in: Epping, Ardeer, Moorabbin, Canberra Airport ACT, Perth Airport
Available Fuel Types
- Diesel at 5 stations (from 186.7c, avg 196.2c)
- Ethanol 10% at 8 stations (from 156.7c, avg 160.7c)
- Premium Diesel at 16 stations (from 186.7c, avg 197.3c)
- Premium Unleaded 98 at 16 stations (from 172.7c, avg 182.3c)
- Unleaded Petrol at 8 stations (from 156.7c, avg 160.2c)
Smart Savings Tips for Costco
- Fill up on Friday to save up to 1.7c/L compared to Sunday
- Best value at Perth Airport (156.7c average)
- Look for stations in the bottom 25% (under 156.7c) 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 156.7c per litre — that is 3.5 cents per litre below the Costco network average of 160.2c/L. The next cheapest Costco sites are Costco Casuarina (Casuarina) at 156.7c, followed by Costco Perth Airport (Perth Airport) at 156.7c.
At 160.2c/L on average, Costco currently sits 24.1 cents below the national market average of 184.3c/L, making Costco one of the better-value major-brand options when it is convenient.
Costco coverage across Australia
Costco's densest station concentrations in Australia are in Ardeer (VIC) with 3 stations averaging 160.7c/L, Epping (VIC) with 3 stations averaging 160.7c/L, Moorabbin (VIC) with 3 stations averaging 160.7c/L, Blair Athol (SA) with 2 stations averaging 156.7c/L, and Casuarina (WA) with 2 stations averaging 156.7c/L. These suburbs represent Costco's strongest local footprint and are often where the brand is most price-competitive due to internal network competition. Drivers who regularly travel through these areas typically find it easy to compare multiple Costco sites on the same trip, which helps identify the cheapest local option before filling up.
Prices last updated: 06 June 2026 at 02:19 PM AEST | Based on 31 days of historical data