Supermarket fuel discounts in Australia: how to work out if they're worth it

How fuel discounts from supermarkets work

Both Woolworths (through Everyday Rewards) and Coles (through Flybuys) offer cents-per-litre discounts when you fill up at affiliated fuel stations. You typically earn a voucher by spending a certain amount on groceries, then redeem it at the pump within a set window.

The headline discount is easy to advertise and genuinely useful—but whether it adds up to a net saving depends on your fuel habits and how you did your grocery shop.

This page is general shopping information, not financial advice. Promotions and partner arrangements change regularly—check the current terms on the retailer's app or website.

How to check whether the saving is real

The quick test: multiply the litres you put in your tank by the cents-per-litre discount to get the dollar value of the voucher. Then compare that to any additional grocery spend you made to earn or keep the offer.

For example, if you bought $20 of items you would not normally buy in order to hit a spend threshold, and the resulting fuel voucher is worth $8, you are down $12 overall even though the fuel felt cheaper.

If you were going to do the grocery shop anyway and the voucher came along as a bonus, the saving is straightforward.

Things to check before you rely on the discount

• Eligible fuel stations: Discounts usually apply only at certain branded stations. Check which ones are near you before you make a detour.
• Spend thresholds and activation: Some offers require a minimum spend on specific product categories, or need to be activated in the app before checkout.
• Expiry: Fuel vouchers typically have short redemption windows—a few days to a couple of weeks.
• Stacking limits: Bonus points events and fuel vouchers may or may not combine—read the offer details carefully.

Groceries still need their own comparison

A fuel voucher does not mean your basket was cheaply bought. The discount at the bowser is separate from whether Woolworths or Coles was the better price that week for your regular items. Use a product search on your high-spend lines to check both independently.

Our loyalty programs guide explains how member-only grocery pricing works alongside these offers.