Sonic Drive-In is known for its huge selection of drinks, but the best part is that you can customize your own drink with unique flavors, add-ins, and mix-ins. Whether you want a creative soda, slush, tea, or lemonade, Sonic allows you to build the perfect drink tailored to your taste. If you’re looking for the best custom Sonic drinks, here are some must-try combinations!
What Are Custom Sonic Drinks?
Custom Sonic drinks are beverages that mix different syrups, flavors, and add-ins to create a unique and personalized drink. You can modify sodas, slushes, teas, and lemonades to suit your taste.
Top 5 Best Custom Sonic Slushes
Sonic’s slushes are the perfect base for custom flavor combinations.
| Custom Slush Name | Flavor Combination | Why It’s a Fan Favorite |
| Blue Ocean Slush | Blue Raspberry + Ocean Water | A tropical and fruity frozen treat. |
| Sunset Slush | Cherry + Orange + Pineapple | A bright, citrusy mix that tastes like summer. |
| Cotton Candy Slush | Blue Raspberry + Vanilla | A sweet and nostalgic carnival-inspired drink. |
| Strawberry Cheesecake Slush | Strawberry + Vanilla + Whipped Cream | A dessert in a cup with creamy strawberry flavor. |
| Pickle Juice Slush | Pickle Juice Syrup + Classic Slush | A tangy and salty refreshment for adventurous drinkers. |
Top 5 Best Custom Sonic Sodas
Sonic’s carbonated sodas become even better with custom add-ins.
| Custom Soda Name | Flavor Combination | Why It’s Unique |
| Dirty Coke | Coke + Lime + Coconut Cream | A creamy, tropical twist on a classic cola. |
| Raspberry Vanilla Dr. Pepper | Dr. Pepper + Raspberry + Vanilla | A smooth, bold, and fruity version of Dr. Pepper. |
| Cherry Vanilla Sprite | Sprite + Cherry + Vanilla | A fizzy and sweet blend of classic flavors. |
| Ocean Water with Lemon & Raspberry | Ocean Water + Lemon + Raspberry | A citrusy and berry-infused version of the fan-favorite drink. |
| Extreme Green Apple Sprite | Sprite + Green Apple + Lemon | A tangy, sour, and fizzy mix. |
Top 5 Best Custom Sonic Teas & Lemonades
For a lighter, refreshing drink, Sonic’s teas and lemonades can also be customized.
| Custom Tea/Lemonade Name | Flavor Combination | Why It’s Refreshing |
| Peach Green Tea | Green Tea + Peach | A naturally sweet and tropical tea. |
| Strawberry Lemonade with Coconut Cream | Lemonade + Strawberry + Coconut Cream | A creamy, fruity twist on classic lemonade. |
| Raspberry Sweet Tea | Sweet Tea + Raspberry | A Southern-style drink with extra berry flavor. |
| Cherry Limeade with Extra Lime | Cherry Limeade + Extra Lime Juice | A bolder, tangier version of Sonic’s #1 drink. |
| Mango Peach Tea | Black Tea + Mango + Peach | A perfectly balanced tropical tea blend. |
Best Sonic Drink Sizes for Custom Drinks
If you want the best value for your money, the Route 44 (32 oz.) size is the best deal.
| Size | Best For |
| Small (12 oz.) | A quick refreshment |
| Medium (16 oz.) | A balanced choice |
| Large (20 oz.) | Great for sipping longer |
| Route 44 (32 oz.) | Best value and biggest size |
How to Create Your Own Custom Sonic Drink
Sonic allows full customization, so you can mix and match flavors to make your perfect drink.
Flavor Add-Ins
- Cherry
- Vanilla
- Blue Raspberry
- Lime
- Peach
- Coconut
Extra Mix-Ins
- Fresh fruit pieces
- Coconut cream
- Whipped cream
- Candy mix-ins (Nerds, Jolly Ranchers)
Are Custom Sonic Drinks Included in Happy Hour?
Yes! During Sonic Happy Hour (2 PM – 4 PM), you can get 50% off all custom sodas, slushes, lemonades, and teas. You can also get half-price drinks all day when ordering through the Sonic App.
How Do Custom Sonic Drinks Compare to Other Fast-Food Chains?
Sonic offers way more customization options than most fast-food chains.
| Fast-Food Chain | Custom Drink Options? |
| Sonic Drive-In | Yes (Slushes, sodas, teas, and lemonades) |
| McDonald’s | Limited (Standard sodas only) |
| Starbucks | Yes (Teas & Refreshers with custom add-ins) |
| Dairy Queen | No (Mostly ice cream-based options) |
FAQs
What is the best custom drink at Sonic?
The Dirty Coke, Blue Ocean Slush, and Raspberry Vanilla Dr. Pepper are all fan favorites.
Can I create my own custom Sonic drink?
Yes! You can mix and match flavors, syrups, and add-ins to build your perfect drink.
Are custom drinks included in Sonic’s Happy Hour?
Yes! Custom drinks are eligible for 50% off during Happy Hour.
What is the best Sonic drink for summer?
The Sunset Slush and Ocean Water with Raspberry & Lemon are perfect for hot days.
Can I customize drinks in the Sonic app?
Yes! The Sonic App lets you add flavors and mix-ins when placing an order.
