Is there a minimum purchase requirement to claim a gas offer? March 09, 2022 20:16 Updated Nope! You can purchase as much or as little gas as you want, up to a maximum of 50 gallons per offer. :-) Related articles Can I use Checkout 51 gas offers with gas station rewards (like cards and coupons)? Important information on claiming gas offers I bought Premium grade gas but received the Cash Back for Regular, what happened? How many gallons is a gas offer good for? I forgot/missed selecting an offer when I uploaded my receipt