A lot of folks use those grocery store and/or convenience store loyalty cards to buy gas at a discounted price. Those cards do come in handy and depending on your shopping habits can benefit you with saving 10 cents a gallon on gas for example.
But that loyalty card gas discount doesn't guarantee you're getting the best possible price for gas.
If you aren't already familiar with Gas Buddy, you might want to consider doing so.
From the Gas Buddy website: "GasBuddy is a smartphone app connecting drivers with their Perfect Pit Stop™. With nearly 70 million downloads, GasBuddy is the leader in crowdsourced information to help drivers find the best gas prices, closest stations, friendliest service, cleanest restrooms, tastiest coffee and much more. "
The app, easy to use, will bring up a list of gas prices in your area, searching by city or zip code, helping you determine the best price to buy gas, loyalty card or not. Gas Buddy also comes in very handy when traveling and you can't use that loyalty card. In fact, the app includes features such as gas price maps and a trip calculator.
Check out Gas Buddy, you'll be glad you did!