BP gift cards have updated their conditions of use:
1) one card per transaction
2) minimum amount use is $5
3) split payments not allowed with either gift card or credit card.
Not sure how they are going to manage if you don't have cash on you to make the difference.
Update: 5/7/19 expanded customer care comments.
The bp fuel card and the bp giftcard are different forms of payment and have different terms and conditions. These conditions have not changed.
The fuelcard can be only use one card per transaction - these cards are applied for by businesses with valid ABNs.
The giftcard can be used in the same transaction as a credit or debit card however 2 giftcards can not be processed on the same transaction - a gift card can be purchased by any customer at a BP station to use at a later date.
Kind Regards,
Odette
BP Customer Support Team
Phone: 1300 1300 27 | Fax: 1800 612 671
So what happens if I have less than $5 left on the giftcard???