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When it comes to branded credit cards offered by stores or gas stations, they most likely are not affiliated with a payment network like Visa or Mastercard and therefore, they cannot be used everywhere. As for the Kwik Trip credit card, it is good for shopping at Kwik Trip / Kwik Star gas stations and stores only. You won't be able to use Kwik Trip card outside Kwik Trip locations. So, if you'd rather prefer a credit card that can be used everywhere, we would recommend you to skip the Kwik Trip card and apply for a regular credit card instead.

For the most generous gas discounts, you might want to consider the Discover it® Cash Back card, for example. The card gives cardholders opportiunity to Earn 5% cash back on everyday purchases at different places each quarter like, grocery stores, restaurants, and gas stations, up to the quarterly maximum when you activate. Plus, unlimited 1% cash back on all other purchases - automatically.

As an alternative, if you fill up regularly, you might want to consider the Citi Premier® Card (Citi is a advertising partner). Cardholders will earn 10x points at gas stations as well as restaurants, supermarkets, hotels, and airline purchases and 1x points on all other purchases. The card is offering one of the best sign-up bonuses: Earn 60,000 bonus ThankYou® Points after you spend $4,000 in purchases within the first 3 months of account opening.. With the ThankYou® Points you earn, you can redeem for gift cards, travel rewards, shop with points and more.

The Citi Custom Cash Card is also a good option for gasoline purchases. With the Citi Custom Cash Card, you can Earn 5% cash back on purchases in your top eligible spend category each billing cycle, up to the first $500 spent, 1% cash back thereafter. Also, earn unlimited 1% cash back on all other purchases. Eligible spending categories include everything from gas stations to restaurants, grocery stores, select travel, select transit, select streaming services, drugstores, home improvement stores, fitness clubs and live entertainment.