Costco Fuel Prices in Casula
Today's member fuel prices at Costco Casula (20 Parkers Farm Place, south-west Sydney): Unleaded 158.7c per litre, updated Jul 19, 2026. Sydney fuel moves in price cycles that can swing 30-40 cents over a few weeks — the chart below shows exactly where this station sits in the cycle, tracked from the official NSW FuelCheck reporting data.
Today's Costco Member Fuel Prices
Costco Fuel Station, 20 Parkers Farm Place, Casula, NSW. Prices are for Costco members and are updated when station prices change.
About this station
Casula is one of Costco's busiest Sydney fuel sites, serving Liverpool and the M5/M31 corridor. Grades: Unleaded, Premium 98 and Premium Diesel — members only, scan your card at the pump.
Timing the Sydney price cycle
Sydney petrol prices rise sharply at the top of each cycle then drift down for weeks. Costco stays at the bottom of the market throughout, but filling up in the trough still saves the most — the trend chart above makes the cycle easy to spot.
How we track this price
NSW law requires every price change to be reported to FuelCheck; we log each change at this station, so the chart is its genuine history.