Sonic Offers Free Coca-Cola with Customizations with Purchase

Sonic is offering a limited-time promotion for its mobile app users, where they can get a free Coca-Cola, Diet Coke, or Coke Zero Sugar in any size, along with unlimited free customizations with any purchase.

They're calling it the "Free Coca-Cola Your Way." To take advantage of the deal, you'll need to pick the relevant offer in the "Deals" tab of the Sonic mobile app. Then, you choose your Coca-Cola and add any flavors and/or fruit to your liking.

Available flavors include Cherry, Sweet Cream, Twisted Lime, Vanilla, Green Apple, Coconut, Blue Raspberry Flavor Bubbles

Fruit options include strawberries, lemon, jalapenos, pickles, lime, and cherries.

The only add-in not included is Nerds candy.

The Free Coca-Cola Your Way offer can be used once daily through December 28, 2025.

Photo via Sonic.