£1.59 – £2.19
Diet Coke is a sugar-free, low-calorie cola that offers the classic crisp taste without the sugar.
At McDonald’s UK, it’s served chilled with ice and comes in small, medium, and large sizes.
Calories
1 kcal (for a Medium 400ml serving)
Ingredients
- Carbonated Water
- Colour (Caramel E150d)
- Sweeteners (Aspartame, Acesulfame K)
- Natural Flavourings including Caffeine
- Acids (Phosphoric Acid, Citric Acid)
- Contains a source of Phenylalanine.
Nutrition
Typical values for a Medium (400ml) serving:
| Nutrient | Amount | % RI |
| Fat | 0g | 0% |
| Saturated Fat | 0g | 0% |
| Carbohydrates | 0g | 0% |
| Sugars | 0g | 0% |
| Fibre | 0g | – |
| Protein | 0g | 0% |
| Salt | 0.1g | 2% |
Allergens
- Contains: None of the 14 major EU allergens.
- Warning: Contains Aspartame, which is a source of Phenylalanine. This is important for individuals with the rare genetic condition Phenylketonuria (PKU).
FAQs
1. Is Diet Coke at McDonald’s vegan?
Yes. Diet Coke contains no animal-derived ingredients, making it suitable for vegans and vegetarians.
2. Does McDonald’s Diet Coke contain caffeine?
Yes. Diet Coke has caffeine as part of its flavor. For a caffeine-free option, you can try Sprite Zero or bottled water.
3. Why does Diet Coke at McDonald’s taste different?
McDonald’s stores syrup in stainless steel tanks and pre-chills water and syrup before dispensing, keeping it highly carbonated and crisp.
4. Is there a “Sugar Tax” on Diet Coke?
No. Diet Coke is sugar-free and not subject to the UK Soft Drinks Industry Levy.
5. Can I order Diet Coke without ice?
Yes. You can request “No Ice” when ordering at the kiosk, app, or counter.