Latest snapshot
Over the past 29 days, Costco diesel has eased the most across Australia — down about $0.313 to $1.936 a litre on average.
14 of 14 Costco fuel stations we track saw a meaningful move.
Costco’s pump prices shift constantly. This page tracks how they’ve moved across Australia, refreshed daily from a rolling 30-day price history — so it shows the recent direction, not just one day’s number. For the live price near you right now, see the live Australia Costco fuel price map. Below: which grade moved most, which states swung hardest, and the individual warehouses with the biggest drops and increases.
Which grade moved most
| Grade | Avg now | Change (~29d) |
|---|---|---|
| diesel | $1.936 | ▼ $0.313 decrease |
| unleaded | $1.584 | ▼ $0.126 decrease |
| Premium 98 | $1.788 | ▼ $0.120 decrease |
Biggest movers by state
Blended unleaded average per state, over roughly the past 29 days. Only states with at least two priced warehouses are ranked.
Biggest drops — cheaper fuel
| State | Stations | Avg now | Change |
|---|---|---|---|
| New South Wales | 4 | $1.552 | ▼ $0.140 decrease |
| Victoria | 3 | $1.587 | ▼ $0.140 decrease |
| Western Australia | 2 | $1.547 | ▼ $0.140 decrease |
| Queensland | 3 | $1.600 | ▼ $0.087 decrease |
Inside the states that moved most, the sharpest single-warehouse swings were:
- New South Wales: Marsden Park (Marsden Park), down $0.140 to $1.547.
- Victoria: Moorabbin (Moorabbin Airport), down $0.140 to $1.587.
- Western Australia: Perth Airport (Perth Airport), down $0.140 to $1.547.
Biggest individual price changes
Biggest drops — cheaper fuel
| Warehouse | Location | Now | Change |
|---|---|---|---|
| Marsden Park | Marsden Park, NSW | $1.547 | ▼ $0.140 decrease |
| Auburn | Lidcombe, NSW | $1.547 | ▼ $0.140 decrease |
| Crossroads | Casula, NSW | $1.547 | ▼ $0.140 decrease |
| Moorabbin | Moorabbin Airport, VIC | $1.587 | ▼ $0.140 decrease |
| Epping | Epping, VIC | $1.587 | ▼ $0.140 decrease |
Frequently asked questions
Are Costco fuel prices going up or down in Australia right now?
It depends on the week and the state. This page recaps the recent direction in dollars per litre for Unleaded, Premium 98, and diesel, then ranks the states and individual warehouses that moved the most. The snapshot box up top names the biggest mover right now.
How often do Costco fuel prices change?
Costco changes pump prices often, and Australian fuel runs on a price cycle, so swings can be large. We refresh this page daily from a rolling 30-day history, so it shows the recent trend rather than one day’s price.
Where is Costco fuel cheapest in Australia right now?
Costco fuel is members-only and usually well below the local average, but the price differs by warehouse and where each sits in the fuel cycle. Our Australia page lists every Costco fuel station with its current price.
Why did Costco fuel prices change recently?
Costco buys finished fuel from the same terminals as other retailers, so its prices track the wholesale (TGP) market and the regional price cycle, plus fuel excise and GST — Costco typically holds a below-market margin and moves with the cycle rather than against it.
How do you measure the “biggest movers”?
For each warehouse we compare the latest price against roughly a month earlier, using the same 30-day history behind our charts, then rank states and stations by that change. Stations without a comparable earlier reading are excluded, and very small moves are treated as flat.
Costco fuel price trends in other countries
Prices move differently in each market. See the latest recap for the U.S., Canada, the UK, and Mexico.
How we measure this: for every Costco fuel station we compare the latest price against roughly a month earlier, using the same 30-day history behind our price charts. This page is refreshed daily; prices change constantly and vary by location, so always confirm at the pump. This site is independent and not affiliated with Costco Wholesale Corporation.
