How to stack
You can stack as many times as you like with Z App or your Airpoints™ Card for accumulated discounts. Just remember, stacked discounts expire on the last day of the month following the month in which they were accumulated.
First visit
Spend $40 or more on fuel, scan and choose to stack.
Your balance is now:
6c off per litre
Second visit
Spend $40 or more on fuel, scan and choose to stack.
Your balance is now:
12c off per litre
Third visit
Use your 6c per litre discount with your 12c stacked balance.
Your savings:
18c off per litre