Find the cheapest Costco fuel today - Live prices at 8 stations
Compare Costco pump prices across Australia & New Zealand. Current range: 186.7c to 196.7c/L. Average: 191.4c/L.
By the Petrolmate Data Team · Last updated 29 August 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 Casuarina | Casuarina, WA | 186.7c |
| 2 | Costco Perth Airport | Perth Airport, WA | 186.7c |
| 3 | Costco Kilburn | Blair Athol, SA | 188.7c |
| 4 | Costco Moorabbin (Members Only) | Moorabbin, VIC | 192.7c |
| 5 | Costco Epping (Members Only) | Epping, VIC | 192.7c |
Costco is 16.6c cheaper than the market average
Australia (AUD)
Costco operates 8 fuel stations across 4 regions in Australia. Current unleaded prices range from 186.7c to 196.7c per litre (AUD), with an average of 191.4c/L. On average, Costco prices are 16.6c/L below the Australia market average of 208.0c/L. The cheapest Costco prices are in Western Australia (186.7c/L), while Australian Capital Territory is higher at 196.7c/L.
PetrolSMART. Smart Fuel Insights
PetrolSMART Price Intelligence
59% of stations suggest waiting might save you money
Price Cycle Overview
Distribution of stations across cycle phases in Costco
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rise
Based on historical price patterns in Costco, Thursday tends to offer the best prices. Some areas see prices start to rise on Thursday ahead of the weekend.
Cheapest Costco Stations Right Now
Costco Prices by State
| State | Stations | Min Price | Avg Price | Max Price |
|---|---|---|---|---|
| Victoria | 3 | 192.7¢ | 192.7¢ | 192.7¢ |
| Australian Capital Territory | 2 | 196.7¢ | 196.7¢ | 196.7¢ |
| Western Australia | 2 | 186.7¢ | 186.7¢ | 186.7¢ |
| Auckland | 1 | 283.7¢ | 283.7¢ | 283.7¢ |
| South Australia | 1 | 188.7¢ | 188.7¢ | 188.7¢ |
Costco Prices by Fuel Type
| Fuel Type | Stations | Cheapest | Average |
|---|---|---|---|
| Diesel | 5 | 234.7¢ | 241.2¢ |
| Ethanol 10% | 7 | 182.7¢ | 187.8¢ |
| Premium Diesel | 15 | 234.7¢ | 241.5¢ |
| Premium Unleaded 98 | 15 | 204.7¢ | 214.2¢ |
| Unleaded Petrol | 8 | 186.7¢ | 191.5¢ |
How Costco Compares
Average unleaded prices compared to other major brands
Market average: 208.0c/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, Moorabbin, Ardeer, Canberra Airport ACT, Blair Athol
Available Fuel Types
- Diesel at 5 stations (from 234.7c, avg 241.2c)
- Ethanol 10% at 7 stations (from 182.7c, avg 187.8c)
- Premium Diesel at 15 stations (from 234.7c, avg 241.5c)
- Premium Unleaded 98 at 15 stations (from 204.7c, avg 214.2c)
- Unleaded Petrol at 8 stations (from 186.7c, avg 191.5c)
Smart Savings Tips for Costco
- Fill up on Friday to save up to 1.6c/L compared to Wednesday
- Best value at Perth Airport (186.7c average)
- Look for stations in the bottom 25% (under 188.2c) 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 & New Zealand is Costco Casuarina in Casuarina, WA, selling unleaded fuel at 186.7c per litre — that is 4.7 cents per litre below the Costco network average of 191.4c/L. The next cheapest Costco sites are Costco Perth Airport (Perth Airport) at 186.7c, followed by Costco Kilburn (Blair Athol) at 188.7c.
At 191.4c/L on average, Costco currently sits 16.6 cents below the national market average of 208.0c/L, making Costco one of the better-value major-brand options when it is convenient.
Costco coverage across Australia & New Zealand
Costco's densest station concentrations in Australia & New Zealand are in Ardeer (VIC) with 3 stations averaging 192.7c/L, Epping (VIC) with 3 stations averaging 192.7c/L, Moorabbin (VIC) with 3 stations averaging 192.7c/L, Casuarina (WA) with 2 stations averaging 186.7c/L, and Perth Airport (WA) with 2 stations averaging 186.7c/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: 29 August 2026 at 07:10 PM AEST | Based on 31 days of historical data