The coffee shop chain is treating customers to a regular drink at Costa Express machines at over 500 UK Shell-owned petrol or service stations.
The delicious discount can be redeemed on Friday, November 11 and Friday, November 18.
It will be available all day on these two dates until the store's closing time. Here's everything you need to know about how to access the tasty treat for less. The machines will be set up to only charge the £1 discount price for the regular drink.
Additionally, you will also be able to get your favourite syrups for no extra change for an added sweet touch. Costa normally charges an extra 30p for syrup shots in your hot drinks.
The deal will also include the chain's recently released festive range. You should be advised that you can't use the discount alongside the brand's other promotions and it's not available through delivery, mobile order, or any other order-at-table option
The deal won't give you any Costa Club beans points and it can't be used on any other sized drinks.