Taco Bell · Fountain Drinks & Coffee · United States
Mtn Dew Calories & Nutrition
A 20 oz Mtn Dew from Taco Bell has 280 calories, 0g protein, 73g carbs, 0g fat and 73g sugar.
The originial DEW® that quenches thirst with a one of a kind citrus taste.
Key facts
Calories
280 kcal
Protein
0g
Carbohydrates
73g
Sodium
85 mg
It ranks #17 of 19 fountain drinks & coffee from lowest to highest calories, with 98% more calories than the category average of 142 kcal.
Add to the Taco Bell calculatorMtn Dew nutrition by size
Going from 30 oz to 16 oz saves 200 kcal.
Ingredients & allergens
Allergens:
No major allergens listed.
Allergens shown in capitals as declared by Taco Bell. Recipes change and items are made on shared equipment, so always check in store if you have an allergy.
Lower-calorie alternatives
Mtn Dew: common questions
How many calories are in a 20 oz Mtn Dew?
A 20 oz Mtn Dew from Taco Bell has 280 calories, 0g protein, 73g carbs, 0g fat and 73g sugar. That is 14% of the 2,000 kcal daily value for an average adult.
How many calories are in each size of Mtn Dew?
16 oz: 220 kcal; 20 oz: 280 kcal; 30 oz: 420 kcal.
How much sugar is in Mtn Dew?
73g of total sugars, of which 73g are added sugars.
Is Mtn Dew dairy-free?
The official allergen information lists no milk in the standard build. Taco Bell uses shared equipment, so traces are possible.
Source: Taco Bell Full Nutrition Information (official table on tacobell.com/nutrition/info, hosted by Nutritionix) (last updated 2026-10-15, retrieved 2026-10-16); Taco Bell item nutrition labels: ingredients & allergens (same official tool) (retrieved 2026-10-16); Taco Bell Allergen Information (retrieved 2026-10-16); tacobell.com national menu & product pages (menu scope, descriptions, combo contents) (retrieved 2026-10-16). Data checked 2026-10-16. Taco Bell is a trademark of its owner; Fast Food Calc is independent and not affiliated with Taco Bell.