Save money on petrol in Australia (2026)

1. Compare the fuel grade your car uses

Search your suburb or postcode and choose U91, E10, P95, P98, diesel or the other grade specified for your vehicle. Compare nearby stations by reported price, distance and update time. A station that is cheapest for E10 may not be cheapest for diesel or premium petrol.

2. Check the current petrol cycle

The ACCC publishes buying tips for regular unleaded petrol in Sydney, Melbourne, Brisbane, Adelaide and Perth. Cycle duration changes over time, so a fixed “cheap Tuesday” rule is unreliable. Use the current cycle chart before a larger fill. Diesel and LPG do not follow the same retail cycles.

3. Work out the detour saving

Multiply the price difference in dollars per litre by the litres you expect to buy. A 10c/L gap on a 50-litre fill is a gross saving of $5. Compare that with the extra kilometres, fuel used and time before changing route.

4. Compare the final discounted price

If you have an eligible docket, member rate or app offer, read the current terms and subtract the discount from that station's base price. Another service station can still be cheaper without an offer. Do the comparison before joining a queue or driving further.

5. Use E10 only when approved

Check the owner's manual or fuel-flap label. Do not use E10 or a lower octane grade when the manufacturer requires something else. If the car is compatible, compare the E10 price with U91 at the stations you can reach; the price gap changes by location and day.

6. Treat price locks as one option

A retailer price lock may help if prices rise before the redemption period ends. Check the eligible area, fuel grade, expiry and other terms, then compare the locked price with nearby stations before making the trip.

7. Reduce avoidable fuel use

Smooth acceleration, steady speeds, correct tyre pressure and removing unused roof racks or heavy loads can reduce fuel use. Combine errands where practical and avoid unnecessary idling when it is safe and lawful to switch the engine off.

8. Keep the check simple

Choose the correct fuel, compare current nearby prices, check the cycle where it applies and calculate any detour. Confirm the final price at the bowser. These checks are more reliable than assuming one suburb, brand, weekday or discount is always cheapest.