AA Smartfuel discounts are redeemable up to a maximum 50 litres of any one fuel purchase at participating GAS Service Stations (excludes unmanned self-service stations and fuel purchases using the GAS UP app). AA Smartfuel cards must be registered before discounts can be redeemed (AA Memberships are already registered for AA Smartfuel). Discounts expire at the end of the calendar month following the month in which awarded. Following each redemption, your AA Smartfuel account balance is reset to zero and no discount is carried forward.