Because regular Mars bars can be high in fat and calories, fun-size Mars bars may be more appropriate for dieters. These smaller versions of Mars bars offer lower amounts of fat, sugar and calories.
One fun-size Mars bar contains 60 calories. This product offers significantly fewer calories than a standard Mars bar, which has 258 calories.
A fun-size Mars bar contains 2 g of fat, with 1 g of saturated fat. Regular Mars bars are high in fat, with 10 g of fat and 6 g of saturated fat. You should limit daily saturated fat intake to just 7 percent of your total calories.
Carbohydrates provide most of the calories in fun-size Mars bars. Each fun-size bar contains 10 g of carbohydrates, with 8 g of sugar.
Fun-size Mars bars do not contain any measurable protein, and standard Mars bars contain only 2 g of this vital nutrient.