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Mars Bar
Mars Bar by Mars provides 442 kcal per 100 g, with 65 g of sugars and 4.4 g of protein. That is 115% more sugar than the average product in this category. Its Nutri-Score is E. It is listed in the Bars category and comes in a 160g pack.
Nutrient levels per 100 g
Levels use UK front-of-pack reference thresholds.
Nutrition facts
Serving size: 1 portion (40 g)
| Nutrient | Per 100 g | Per serving | % DV* | Category avg |
|---|---|---|---|---|
| Calories | 442 kcal | 177 kcal | 432 | |
| Total fat | 16 g | 6.4 g | 8% | 20.4 −21% |
| Saturated fat | 7.4 g | 3 g | 15% | 7.7 |
| Carbohydrates | 70 g | 28 g | 10% | 50.1 +40% |
| Total sugars | 65 g | 26 g | 30.2 +115% | |
| Dietary fiber | 0 g | 0 g | 0% | 7.7 −100% |
| Protein | 4.4 g | 1.8 g | 4% | 11.5 −62% |
| Salt | 0.7 g | 0.3 g | 0.5 +49% |
*% Daily Value for a serving, based on a 2,000-calorie diet (FDA reference values). Category average across 2595 Bars products on Foodmetria.
Compared with other bars
Bar shows the share of products in this category that contain less of the nutrient.
Product details
- Quantity
- 160g
- Serving size
- 1 portion (40 g)
- Labels & certifications
- Rainforest Alliance
- Sold in
- United Kingdom
- Barcode
- 5000159605205
Prices reported by shoppers
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Recipe & label changes
-
October 8, 2026
- Nutri-Score: — → e
-
October 3, 2026
- Pack size: — → 160g
Changes to this product's label data recorded since Foodmetria started tracking it.
Frequently asked questions
How many calories are in Mars Bar?
Mars Bar contains 442 kcal per 100 g and about 177 kcal per serving (1 portion (40 g)).
How much sugar is in Mars Bar?
Mars Bar has 65 g of sugars per 100 g, which is considered high by UK front-of-pack guidelines.
Is Mars Bar healthy?
It has a Nutri-Score of E (A is best, E is worst). Scores describe nutritional quality and processing, not suitability for your individual diet.
Source: Open Food Facts (ODbL). Last updated October 8, 2026. Spotted a mistake? Edit this product on Open Food Facts. Not medical advice — always check the package label.
Reviews
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