Find the cheapest Costco fuel today - Live prices at 8 stations
Compare Costco pump prices across Australia & New Zealand. Current range: 188.7c to 196.7c/L. Average: 194.2c/L.
By the Petrolmate Data Team · Last updated 10 September 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 | 188.7c |
| 2 | Costco Perth Airport | Perth Airport, WA | 188.7c |
| 3 | Costco Kilburn | Blair Athol, SA | 192.7c |
| 4 | Costco Canberra Airport Majura Park | Canberra Airport Majura Park, ACT | 194.7c |
| 5 | Costco Canberra Airport (Members Only) | Canberra Airport ACT, ACT | 194.7c |
Costco is 19.0c cheaper than the market average
Australia (AUD)
Costco operates 8 fuel stations across 4 regions in Australia. Current unleaded prices range from 188.7c to 196.7c per litre (AUD), with an average of 194.2c/L. On average, Costco prices are 19.0c/L below the Australia market average of 213.2c/L. The cheapest Costco prices are in Western Australia (188.7c/L), while Victoria is higher at 196.7c/L.
PetrolSMART. Smart Fuel Insights
PetrolSMART Price Intelligence
Check individual station prices in Costco
Price Cycle Overview
Distribution of stations across cycle phases in Costco
drop
rise
Based on historical price patterns in Costco, Monday tends to offer the best prices. Start of the week often brings lower prices as stations compete for customers.
Cheapest Costco Stations Right Now
Costco Prices by State
| State | Stations | Min Price | Avg Price | Max Price |
|---|---|---|---|---|
| Victoria | 3 | 196.7¢ | 196.7¢ | 196.7¢ |
| Australian Capital Territory | 2 | 194.7¢ | 194.7¢ | 194.7¢ |
| Western Australia | 2 | 188.7¢ | 188.7¢ | 188.7¢ |
| Auckland | 1 | 281.7¢ | 281.7¢ | 281.7¢ |
| South Australia | 1 | 192.7¢ | 192.7¢ | 192.7¢ |
Costco Prices by Fuel Type
| Fuel Type | Stations | Cheapest | Average |
|---|---|---|---|
| Diesel | 5 | 232.7¢ | 242.7¢ |
| Ethanol 10% | 7 | 192.7¢ | 192.7¢ |
| Premium Diesel | 15 | 232.7¢ | 240.3¢ |
| Premium Unleaded 98 | 15 | 210.7¢ | 215.3¢ |
| Unleaded Petrol | 8 | 188.7¢ | 194.2¢ |
How Costco Compares
Average unleaded prices compared to other major brands
Market average: 213.2c/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: Canberra Airport ACT, Epping, Moorabbin, Ardeer, Perth Airport
Available Fuel Types
- Diesel at 5 stations (from 232.7c, avg 242.7c)
- Ethanol 10% at 7 stations (from 192.7c, avg 192.7c)
- Premium Diesel at 15 stations (from 232.7c, avg 240.3c)
- Premium Unleaded 98 at 15 stations (from 210.7c, avg 215.3c)
- Unleaded Petrol at 8 stations (from 188.7c, avg 194.2c)
Smart Savings Tips for Costco
- Fill up on Thursday to save up to 1.5c/L compared to Sunday
- Best value at Perth Airport (188.7c average)
- Look for stations in the bottom 25% (under 191.7c) 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 & New Zealand is Costco Casuarina in Casuarina, WA, selling unleaded fuel at 188.7c per litre — that is 5.5 cents per litre below the Costco network average of 194.2c/L. The next cheapest Costco sites are Costco Perth Airport (Perth Airport) at 188.7c, followed by Costco Kilburn (Blair Athol) at 192.7c.
At 194.2c/L on average, Costco currently sits 19.0 cents below the national market average of 213.2c/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 196.7c/L, Epping (VIC) with 3 stations averaging 196.7c/L, Moorabbin (VIC) with 3 stations averaging 196.7c/L, Casuarina (WA) with 2 stations averaging 188.7c/L, and Perth Airport (WA) with 2 stations averaging 188.7c/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: 10 September 2026 at 12:26 AM AEST | Based on 30 days of historical data