Coca-ColaCarbonated Beverages#8 of 8 in categoryRating 1.7/5

Coca-Cola Zero Sugar Soft Drink

Red flags

  • Red flag: Contains Sodium Benzoate
  • Red flag: Contains Caramel Colour (Class IV)

Green flags

  • Green flag: No added sugar
  • Green flag: Low sodium

Ingredients, decoded

7 listed
  • Carbonated water
  • Acidity Regulators (338, 331(iii))
  • Sweeteners (955, 950)
  • Preservative (211)
  • Caffeine (9.2 mg/100 g)
  • Colour (150d)
  • Flavours (Natural Flavouring Substances)
ConcernWorth watchingIn label order. Tap a highlighted one to learn more.

Nutrition per 100 ml
ENutritionDIngredients4Risk
Energy0 kcal
Protein0 g
Carbohydrates0 g
Total sugars0 g
Added sugars0 g
Total fat0 g
Sodium7.5 mg
Highlighted values exceed FSSAI and UK FSA front of pack thresholds.

Our take

CleanPlate review

Zero sugar cola with two sweeteners and caffeine

Coca-Cola Zero Sugar is a carbonated cola made from carbonated water with two acidity regulators, two sweeteners (sucralose and acesulfame potassium), a preservative, caffeine (9.2 mg per 100 ml), caramel IV and natural flavours. The pack here is two 750 ml bottles; the panel is printed per 100 ml, and the pack is marked veg.

CleanPlate scores it ED4. The E for nutrition is low: almost no credited protein, fibre or micronutrients per 100 ml. The D for ingredients reflects mostly refined or industrial ingredients, with additives that cost points: caramel colour, sucralose, acesulfame potassium and phosphoric acid. The 4 for risk comes only from the caffeine floor: a caffeinated drink cannot score better than 4, though this one has no sugar, fat or calories.

Claims vs reality

What the pack says, checked against the ingredient list and nutrition panel.

  • Product name

    “Zero Sugar”

    Holds

    The panel prints 0 g of sugar and the sweeteners are listed.

How ED4 breaks down

Each grade is scored on its own. Here are the label numbers behind each one, per 100 ml.

How we score →
01 Nutritional valueA to E
E

Very low nutrient density

Protein
0 g
Fibre
Not declared
Vitamins and minerals
None declared
Energy
0 kcal

Scored on protein, fibre and twelve vitamins and minerals, against the Codex and FSSAI "source" and "high" levels, per 100 g and per 100 kcal.

02 Ingredient & label integrityA to E
D

Heavily processed or flagged substances

Base
Carbonated water
Sweeteners
None added
Additives
3
Flagged
Sodium Benzoate, Caramel Colour (Class IV)

Scored on how processed the ingredients are, which additives are used and why, and whether the label keeps its promises.

03 Risk nutrients1 to 5
4

High risk

Added sugar
0 g
Sodium
7.5 mg

Scored on free sugar, sodium, saturated fat and trans fat, each weighed by how strong the evidence of harm is.

A closer look

Does the label add up?

Carbonated water, acidity regulators (338, 331(iii)), sweeteners (955, 950), preservative (211), caffeine (9.2 mg per 100 ml), colour (150d) and natural flavouring substances.

Per 100 ml: 0 kcal, 0 g fat, 0 g sugar of which 0 g added, 0 g protein, 7.5 mg sodium. The panel is per 100 ml: 0 kcal, 0 g sugar, 7.5 mg sodium. Caffeine is printed in the ingredient list, not the panel. The score is for one bottle; the pack of two is a promo card. Carbonated water is not counted as a food ingredient, so the ingredients grade rests on the additives and labels alone.

Ingredients to watch

  • SweetenersWorth watching

    Sucralose costs 4 points and acesulfame potassium 3 points.

  • CaffeineWorth watching

    9.2 mg per 100 ml; caffeinated drinks cannot score better than 4 on risk.

  • Caramel IV and phosphoric acidWorth watching

    Caramel IV costs 4 points and phosphoric acid 2.

  • Sugar and energyFine

    0 g sugar and 0 kcal per 100 ml.

Common misconceptions

Myth: "Zero sugar means no concern"

It carries two non-sugar sweeteners, caramel IV, phosphoric acid and caffeine.

Myth: "A zero-calorie drink is a healthy drink"

It adds no protein, fibre or vitamin, and has nothing to credit on nutrition.

How often, and how

  • Healthy adultsRarely
  • ChildrenRarely
  • Diabetes or prediabetesLimit strictly

Smarter ways to eat it

Keep it occasional

Water or sparkling water has none of the additives.

Mind the caffeine

A 250 ml glass has about 23 mg of caffeine.

Common questions

Is Coca-Cola Zero Sugar Soft Drink healthy?

Coca-Cola Zero Sugar Soft Drink scores ED4 (Very Poor) on CleanPlate, which makes it one of the weakest products we've rated and worth swapping out. The main concerns are: Contains Sodium Benzoate; Contains Caramel Colour (Class IV). On the plus side: No added sugar; Low sodium.

What does the ED4 score mean?

The first letter (E) grades nutritional value: very low nutrient density. The second letter (D) grades ingredient and label integrity: heavily processed or flagged substances. The number (4) grades risk nutrients (sugar, sodium, saturated fat): high risk.

Which ingredients in Coca-Cola Zero Sugar Soft Drink should I watch?

Preservative (211) (Sodium Benzoate), Colour (150d) (Caramel Colour (Class IV)).

Last reviewed October 18, 2026. Scored with the CleanPlate method from the published label.

Better Carbonated Beverages

All 8 →