Sonic Giving Out Free Dirty Cokes Through the End of the Year

Sonic Drive-In is making headlines by giving away free dirty Cokes (any-size Coca-Cola, Diet Coke, or Coke Zero) every day through December 28, 2025. Just open the Sonic app, tap the Deals tab, and redeem the “Free Coca-Cola Your Way” reward with any purchase.

You’ll walk out with a free fizzy soda cocktail every day (as long as you order something small via the app). This means you can try a free Dirty Coke once per day – from November all the way through year-end – in any size (yes, even the huge 44-oz “Coke tall can” equivalent cups!).

Why “Dirty Coke”? Sonic’s promo taps into the dirty soda trend, which means adding mix-ins (cream, syrups, fruit, etc.) to a regular soda to make it more like a mocktail. In fact, Sonic even added new toppings like vanilla sweet cream and coconut cream to its menu in 2024 to let fans create these custom soda drinks. In other words, your free drink can be as wild as your taste buds – Coke with cherry, coconut, jalapeño slices, you name it!

What’s the Deal? How to Get Your Free Dirty Coke

• Who qualifies: Any Sonic Rewards member using the Sonic app (it’s free to sign up).
  
• What you get: One free any-size Coca-Cola®, Diet Coke®, or Coke Zero® per day. Each free drink comes with unlimited add-ins and customizations at no extra cost.
  
• When: Daily through December 28, 2025. Once the calendar flips past 12/28, the deal ends.
  
• How to redeem: Open the Sonic app and tap the Deals tab. Find and select the “Free Coca-Cola Your Way” reward. Add it to your order with any qualifying purchase (some users report even a $1 add-on works). Then check out and enjoy your drink. You can do this every single day until December 28, 2025.
  

Once activated, the free reward resets each day, so be sure to grab your daily Dirty Coke before the day ends. Because Sonic has so many menu drinks, you’ll need the app to order to claim the offer.

Customization Inspiration: Crazy “Dirty” Combos

Sonic’s free drink isn’t just plain old Coke – it’s an all-you-can-mix soda adventure. To spark your creativity, here are some fun combos (a few even come from celebrity collabs):

• Sweet Cream Strawberry Coke: Coke with strawberry syrup (or real strawberries) and a dollop of Sonic’s sweet cream. (Jessie Murph’s fan-inspired “Dirty Coke” is Coke + strawberries + sweet cream!)
  
• Blood Orange Vanilla Coke: Coke with blood orange syrup and vanilla. (The Machine Gun Kelly combo – a tangy, tropical twist.)
  
• Cherry-Pickle Coke: Coke with cherry syrup and even a pickle spear. (Benny Blanco’s zany combo – yes, pickles on Coke is a thing!)
  
• Classic Dirty Dr Pepper (“The Malibu”): Swap in Dr Pepper and add coconut syrup + vanilla. (A famous Utah-style Dirty Soda called the “Malibu” – Sonic doesn’t advertise it, but app users know to mix Dr Pepper with coconut and vanilla for a smooth soda-crème drink.)
  
• Creamy Coconut Coke: Coke with coconut cream (or syrup) and a splash of lime. Sonic added a coconut cream topping in 2024 for just this kind of drink.
  
• Lemon-Lime Vodka-less: Sprite or 7-Up with lemon slices and vanilla cream. (Even though the promo mentions Coke varieties, Sonic lets you customize most fountain drinks – just try ordering a Coke and customizing it to taste like a lemon-lime drink.)
  

Feel free to experiment – Sonic’s menu has dozens of syrup flavors and add-ons. For example, mix in raspberry or passionfruit, a shot of sweet cream, or even blue raspberry Nerds candy. Any mix-in you’d normally pay extra for is free on these Dirty Cokes.

Why Sonic’s Free Dirty Coke Deal Is Trending

This promo launched in partnership with Coca-Cola and even some pop stars, so it’s blowing up on social media. Since the “Secret Lives of Mormon Wives” show popularized dirty sodas, Sonic’s drink deal is riding the viral dirty soda wave. Dirty sodas started in Utah as an alternative to coffee and alcohol (just soda + cream), but now chains nationwide (like Whataburger, KFC, Taco Bell, etc.) are adding similar drinks to menus. Sonic’s deal stands out by offering them free every day.

In short, it’s a Dirty Free-For-All (pun intended!) of tasty treats – you don’t often get to try unlimited custom sodas at zero cost. As Sonic’s CMO put it, it’s a “creative moment of self-expression” – and it’s free satisfaction for soda lovers. Think of it like topping off your holiday season: free sugary refreshment with unlimited flavors.

Tips & Tricks

• Try Different Bases: Although the promotion officially covers Coke, Diet Coke, and Coke Zero, some Sonic locations will allow you to swap in Dr Pepper or flavored sodas (just ask!). This opens the door to classic Utah Dirty Soda combos.
  
• Pick Your Size: You can choose literally any size, including the 44-ounce cup. That’s a full soda mountain of freebies if you want it.
  
• Combine Promos Safely: This offer cannot be combined with other Sonic promotions. Don’t try to double-dip offers (the app will only let you use one reward per order).
  
• No Delivery: The deal is app-only for in-restaurant or drive-thru pickup. Delivery orders usually exclude coupons, so plan to pick up your free drink in person.
  
• Timing: The offer resets daily. Set a reminder if you think you might forget to use it every day!
  

Don’t Miss Out – Head to Sonic!

In summary: Through Dec. 28, 2025, Sonic Drive-In is giving you a free, any-size Dirty Coke every single day. You get to mix in as many add-ons as you want (cream, syrups, fruit, etc.) at no extra charge – turning a simple soda into a deluxe treat. So why not enjoy it? It’s easy: download the Sonic app, claim your “Coca-Cola Your Way” reward under Deals, and order away.

This holiday season, Sonic has literally turned the Dirty Soda shack trend into a daily giveaway. So, get the fun and customize your free soda each day – who knows, you might create your new favorite Sonic menu drink! Whether you love sweet cream, coconut flavors, or classic cherry cola, it’s all on the house until year-end. Get out there and claim your free dirty Coke today – it’s a great value soda deal you shouldn’t pass up.

Sources: Sonic’s official promo and media coverage confirm the deal details. They note you can order “one free any size Coke, Diet Coke or Coke Zero Sugar with unlimited add-ins” once per day through 12/28/2025, plus Sonic’s drink menu now includes sweet cream and coconut cream to spice up these free drinks.