Australians have more ways to save at the bowser than almost anywhere. Used properly, and stacked together, these programs can knock a solid amount off every tank. Here is what actually works.
Supermarket dockets
The classic. Spend a set amount in one transaction at Coles or Woolworths and you get a fuel discount — usually around 4 cents a litre — redeemable at partner service stations. Both chains have moved these into their apps (Flybuys and Everyday Rewards), so the docket sits on your phone instead of the bottom of your bag. Watch the expiry date; they lapse quickly.
Stacking is where the money is
The real trick is combining offers rather than relying on one. Depending on the promotion running, you can often layer a supermarket docket with an in-store spend offer at the service station and a membership discount on top. Individually each is small; together they add up to a meaningful cut per litre.
Motoring club discounts
Club memberships such as NRMA, RACV and RACQ include fuel discounts at partner servos, typically a few cents a litre, and they usually stack with other offers. If you already pay for the membership for roadside assistance, you may as well use the fuel benefit — it can pay for a chunk of the fee over a year.
Price lock apps
Some retailers, notably 7-Eleven, let you lock today's price through their app and redeem it within a set number of days. Lock a low price at the bottom of the cycle and you can fill up later even after pump prices have jumped. It works best if you are paying attention to the cycle.
Learn the price cycle
Most capital cities run a fuel price cycle: prices spike, then fall gradually before spiking again. The swing between the top and bottom is often larger than every loyalty discount combined. Free apps like PetrolSpy, Fuel Map Australia and MotorMouth show live prices near you, and some states run their own official price site or app. Buying near the bottom of the cycle is the single biggest saving available.
Consider E10 — carefully
E10 is usually cheaper per litre, but it contains slightly less energy, so you use a little more of it. It is still often a net saving, but only if your car is approved for it. Check your fuel flap or manual first — running E10 in a car not designed for it is a false economy.
A word of caution
Offers, partners and amounts change regularly, so check current terms before you count on them. And do not drive across town to save two cents a litre — the fuel you burn getting there can cost more than you save.