Below are the nutrition facts and Weight Watchers points for Burger W/ Mustard from Sonic Drive-In .
There are 520 calories in a Burger W/ Mustard from Sonic. Most of those calories come from fat (38%) and carbohydrates (41%).
*All percent daily value figures are based on a 2,000 calorie diet.
Weight Watchers Freestyle Points: 16
Weight Watchers SmartPoints: 16
Weight Watchers PointsPlus: 14
Weight Watchers points for the full Sonic menu
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Allergy Information: a Sonic Burger W/ Mustard contains egg, gluten, soy and wheat and may contain milk. a Sonic Burger W/ Mustard does not contain fish, MSG, peanuts, shellfish or tree nuts.*
* Please keep in mind that most fast food restaurants cannot guarantee that any product is free of allergens as they use shared equipment for prepping foods.