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If you want a crisp, fizzy, zero-calorie soft drink with your burger, fries, or breakfast, McDonald’s Diet Coke is one of the most popular drink choices on the McDonald’s drinks menu. It is light, refreshing, sugar-free, and easy to pair with almost any meal. According to McDonald’s official U.S. product page, Diet Coke® is offered in extra small, small, medium, and large fountain drink sizes, and a small has 0 calories.

At the price point you shared — $1.69 for a small — the McDonald’s Diet Coke is also a budget-friendly drink option for people who want the familiar Diet Coke taste without sugar or calories. McDonald’s says the drink can be ordered through the app for pickup or McDelivery® at participating locations, though prices and availability may vary by restaurant.

McDonald’s Diet Coke Price and Calories

Item	Size	Price	Calories
McDonald’s Diet Coke®	Small	$1.69	0 Cal

If you are searching for McDonald’s Diet Coke price, Diet Coke calories at McDonald’s, or a simple sugar-free drink at McDonald’s, this is one of the easiest menu options to understand: it delivers the classic cola flavor profile with zero calories, zero sugar, and 0 grams of carbs in the small size.

What Is McDonald’s Diet Coke?

McDonald’s Diet Coke® is a fountain soft drink served cold over ice. McDonald’s officially describes it as a zero-calorie soda and lists it on the U.S. drinks menu alongside other fountain beverages like Coca-Cola®, Sprite®, Dr Pepper®, and Fanta® Orange.

One reason so many people specifically search for McDonald’s Diet Coke is the taste. Many customers feel it tastes extra cold, crisp, and refreshing compared with other fountain or bottled versions. While taste is subjective, McDonald’s notes that beverage nutrition is based on standard fill levels plus ice, and the product is part of its fountain drinks lineup designed for consistent preparation.

Available Sizes of McDonald’s Diet Coke

McDonald’s official U.S. product page says Diet Coke® is available in the following sizes:

Extra Small
Small
Medium
Large

This makes it easy to order a size that matches your meal, whether you just want a quick small drink or a larger soda with lunch or dinner. McDonald’s also notes that beverage sizes may vary by market, so local sizing can differ slightly.

McDonald’s Diet Coke Nutrition Facts

Here are the nutrition facts you provided for the small McDonald’s Diet Coke®, which align with McDonald’s official listing of 0 calories for the small size.

Nutrient	Amount	% Daily Value
Calories	0 Cal	0%
Total Fat	0 g	0%
Saturated Fat	0 g	0%
Trans Fat	0 g	—
Cholesterol	0 mg	0%
Sodium	50 mg	2%
Total Carbs	0 g	0%
Dietary Fiber	0 g	0%
Total Sugars	0 g	—
Added Sugars	0 g	0%
Protein	0 g	—
Calcium	2 mg	0%
Iron	0 mg	0%
Potassium	45 mg	0%
Vitamin D	0 mcg	0%

Nutrition overview

If your goal is to order a low-calorie McDonald’s drink, Diet Coke at McDonald’s is one of the simplest options on the menu. It has zero sugar, zero carbs, and zero calories in the small size, making it attractive for people who want the cola taste without extra energy intake. McDonald’s also notes that nutrition values are based on standard formulations and can vary slightly by preparation, supply, and market.

McDonald’s Diet Coke Ingredients

Below is the ingredient breakdown based on the information you shared for the U.S. item page format:

Diet Coke®

Ingredients: Carbonated Water, Caramel Color, Phosphoric Acid, Sodium Saccharin, Potassium Benzoate (to Protect Taste), Natural Flavors, Citric Acid, Caffeine, Potassium Citrate, Aspartame

Ice

Ingredients: Ice

This ingredient list shows why many people search for terms like McDonald’s Diet Coke ingredients, does McDonald’s Diet Coke have caffeine, and does Diet Coke have aspartame. Based on the listed ingredients, the drink contains both caffeine and aspartame.

McDonald’s Diet Coke Allergen Information

Allergen / Notice	Status
Contains Phenylalanine	Yes, from Aspartame

The key notice here is Phenylalanine (from Aspartame). This is important for people who specifically look for Diet Coke allergen info or need to monitor ingredients carefully. McDonald’s also states on its nutrition pages that customers with food allergies or special dietary needs should review ingredient information carefully because normal restaurant operations can involve shared preparation areas and equipment.

Why Does McDonald’s Diet Coke Taste Different?

This is one of the most searched questions online. Many people say McDonald’s Diet Coke tastes better than other versions. The usual explanation, reflected in McDonald’s fountain-drink handling standards described in product marketing, is that the drink is served extra cold and prepared consistently in a way that supports a crisp flavor experience. McDonald’s official nutrition pages also explain that fountain beverage calories are based on standard fill levels plus ice, which shows the company uses standardized beverage serving methods across its system.

From an SEO and user-intent perspective, that matters because people often search:

Why does McDonald’s Diet Coke taste better
McDonald’s Diet Coke ingredients
McDonald’s small Diet Coke calories
Is McDonald’s Diet Coke sugar free

This post answers all of those in one place using product-level information and McDonald’s official nutrition disclosures.

Is McDonald’s Diet Coke Sugar-Free?

Yes. The small McDonald’s Diet Coke® has 0 grams of total sugars, 0 grams of added sugars, and 0 total carbs in the nutrition facts you provided, which fits its positioning as a sugar-free soft drink. McDonald’s official product page also confirms the small has 0 calories.

For users searching Is Diet Coke really zero sugar? or Can I drink Diet Coke on a low-sugar diet?, this is the main reason it stays popular on the menu.

Does McDonald’s Diet Coke Have Caffeine?

Yes. Based on the ingredient list you shared, caffeine is included in McDonald’s Diet Coke®. That means it is not a caffeine-free soft drink. If someone wants a McDonald’s drink with caffeine but no sugar, Diet Coke can fit that preference.

Is McDonald’s Diet Coke Good With Meals?

Absolutely. One reason McDonald’s Diet Coke remains a top menu add-on is that it pairs well with:

Burgers
Fries
Chicken sandwiches
Breakfast meals
Value menu items

Because it is 0 calories, some customers choose it as a lighter drink option with a heavier meal. It gives you the classic fizzy cola flavor without adding sugar or calories to your order. McDonald’s also lets customers order it from the app for pickup or delivery at participating locations.

Is McDonald’s Diet Coke Worth It?

At $1.69 for a small, this is one of the more affordable beverage choices if you want:

A refreshing soda
Zero sugar
Zero calories
A familiar cola taste
Multiple size options

If your goal is value, taste, and convenience, McDonald’s Diet Coke is a strong choice. It is especially appealing for people who want a soda without the calories found in regular fountain cola. McDonald’s lists it as part of its U.S. drinks lineup and available through app ordering as well.

Final Thoughts

The McDonald’s Diet Coke is one of the easiest menu items to recommend if you want a cold, sugar-free, zero-calorie drink that works with almost any meal. It is simple, familiar, refreshing, and widely available in multiple sizes. McDonald’s official U.S. product page confirms that Diet Coke® comes in extra small, small, medium, and large sizes, and the small has 0 calories. McDonald’s nutrition pages also explain that beverage values are based on standard serving sizes plus ice, and exact values may vary by market and preparation.

So if you are searching for the McDonald’s Diet Coke price, calories, ingredients, allergen details, caffeine information, and nutrition facts, this drink remains one of the most practical and popular beverage choices on the menu. It delivers the classic Diet Coke taste while keeping your calorie count at zero.

FAQ About McDonald’s Diet Coke

1. How much is a small McDonald’s Diet Coke?

The price you shared is $1.69 for a small, though pricing can vary by location. McDonald’s notes that prices and participation may vary.

2. How many calories are in a small McDonald’s Diet Coke?

A small McDonald’s Diet Coke® has 0 calories according to the official product page.

3. Is McDonald’s Diet Coke sugar-free?

Yes. The nutrition facts show 0 grams of sugar and 0 grams of added sugar.

4. Does McDonald’s Diet Coke have caffeine?

Yes. Caffeine appears in the ingredient list.

5. What sizes does McDonald’s Diet Coke come in?

McDonald’s lists extra small, small, medium, and large sizes on the U.S. product page.

6. Why does McDonald’s Diet Coke taste better?

Many customers think it tastes crisper because of McDonald’s standardized fountain drink handling and serving approach. McDonald’s also notes that fountain drink calories are based on standard fill levels plus ice.

7. Does McDonald’s Diet Coke contain aspartame?

Yes. Aspartame is included in the listed ingredients.

8. Does McDonald’s Diet Coke contain phenylalanine?

Yes. The product notice says it contains phenylalanine from aspartame.

9. Is McDonald’s Diet Coke keto-friendly?

Based on the nutrition facts you shared, it has 0 carbs and 0 sugar, so many people on low-carb diets choose it. For personal dietary advice, check with a healthcare professional.

10. Can I order McDonald’s Diet Coke on the app?

Yes. McDonald’s says it can be ordered through the app for pickup or McDelivery® at participating restaurants.

11. Is Diet Coke on the McDonald’s drinks menu?

Yes. McDonald’s lists Diet Coke® on its U.S. drinks menu.

12. Does McDonald’s Diet Coke have any fat or protein?

No. The small nutrition facts show 0g fat and 0g protein.

13. Is McDonald’s Diet Coke a good choice with burgers and fries?

Yes, many customers choose it because it provides a refreshing cola taste without adding calories or sugar to the meal. McDonald’s includes it in the fountain drinks lineup meant to pair with menu items.

14. Can I order Diet Coke without ice?

Usually yes, depending on ordering options at the restaurant or in the app, though the published nutrition is based on standard fill levels plus ice.

15. Are McDonald’s Diet Coke nutrition values exact everywhere?

Not always. McDonald’s says values are based on average ingredients, standard formulations, and serving sizes, and may vary by market, preparation, and supply source.