How Many Syns In A Mars Bar? Find Out Here & Alternatives!

Updated on 
2 February, 2023

How Many Syns In A Mars Bar? Are They High In Syns?

If you are craving a Mars bar on the slimming world diet, good news, you can happily enjoy your chocolate bar while losing weight as long as you're tracking the syns in the bar.

Are Mars Bars High In Syns? Can I Have This Chocolate On Slimming World?

Mars bars have varying syns according to the size that you choose, on average, you can expect a 33g bar to have around 7.5 syns.

We've discussed in more detail below how many Mars bars you can have on the plan, some syn values of them and some low syn alternative chocolate bars for when you feel like something sweet.

How Many Mars Bars Can I Eat On The Slimming World Plan?

At 7.5 syns for a 33g bar, you could have up to two Mars bars on the slimming world plan before using all your 15 daily syns, making them high in syns.

Mars bars get their high syn value from the high fat and sugar content like most other chocolate bars, for example, a 39.4g mars bar has 24g of sugar (nearly your whole recommended daily intake) and 6.6 of fat per bar.

We do suggest having these chocolate bars in moderation because of their high syn value or opting for their snack-sized bars which are lower in syns.

Mars Bars Syn Values

Mars bars have varying syns according to the size you choose and type, we've listed their varying syn values below to help you out.

Mars Bars Syn Values
  • Mars Chocolate Caramel Ice Cream Bar 4 x 51ml - 7 syns.
  • Mars Chocolate Snack Size Bars Multipack 9 x 33.8g - 7.5 syns.
  • Mars Chocolate Bar 51g - 11.5 syns.
  • Mars Chocolate Low Calorie Snack Bars Multipack 10 x 21g - 4.5 syns.
  • Mars Chocolate Bars Multipack 4 x 39.4g - 9 syns.
  • Mars Chocolate Fun Size Bars Multipack 13 x 18g - 4 syns.
  • Mars Protein Chocolate Bar 50g - 9.5 syns.
  • Mars Caramel Nougat & Milk Chocolate Snack Bar Duo 78.8g - 9 syns.
  • Mars Ice Cream 74ml - 10 syns.
  • Mars Triple Treat Fruit & Nut Milk Chocolate Snack Bars Multipack 4 x 32g - 7.5 syns.
  • Mars Bounty Protein Flapjack Bar 60g - 11 syns.

Low Syn Alternatives To Mars Bars

If you find Mars bars to be too high in syns, there are plenty of other low-syn alternatives to satisfy your chocolate cravings.

  • Fry’s Turkish Delight, Lemon (51g bar) – 9.5 syns. 
  • Fry’s Strawberry Cream Chocolate Bar (49g bar) – 10 syns.
  • Nestle Lion Bar – 7.5 syns.
  • Hotel Chocolat Fruit & Nut 80% Dark Chocolate 100g bar (25g) – 6.5 syns. 
  • Fry’s Raspberry Cream Chocolate Bar (49g bar) – 10 syns.
  • Kit Kat chunky orange – 8 syns 32g.
  • Green & Black’s Dark Chocolate Bar with Hazelnuts & Currants (15g bar) – 4 syns.
  • Kinder Bueno White (1 finger) – 5.5 syns.
  • Nestle Aero chocolate caramel flavour – 6.5 syns for 25g bar.
  • Green & Black’s Dark Chocolate Bar with 85% Cocoa (15g bar) – 4.5 syns.
  • Kinder Chocolate Bar (21g snack) – 6 syns.
  • Green & Black’s Dark Chocolate Bar with 70% Cocoa (15g bar) – 4 syns. 
  • Lindt White Chocolate Bar 100g bar (25g) – 8 syns.
  • Galaxy Ripple Chocolate Bars Multipack 4 x 33g - 9 syns.
  • Kit Kat chunky cookie dough bar - 11 syns 42g.
  • Kit Kat chunky nestle milk chocolate - 10 syns 40g.
  • Kit Kat chunky peanut butter – 11.5 syns 42g.
  • Lindt Lindor Mint Milk Chocolate Bar (38g bar) – 11.5 syns
  • Guylian Belgian Chocolate Original Praline Bar (35g bar) – 9.5 syns.
  • Nestle Aero Milk (27g bar) – 7 1/2 syns.
  • Kit Kat chunky mint – 10 syns 40g.
  • Nestle Aero caramel mousse flavour – 9.5 syns for 34g bar.
  • Nestle Aero dark and milk flavour – 1 syn for 90g bar.
Low Syn Alternatives To Mars Bars

Last Words

To conclude, Mars bars are high in syns, having on average 7.5 syns for a 33g bar which is half of your daily syn allowance, allowing you to have up to two before using all your 15 daily syns.

Chocolate bars are often high in syns due to their high fat and sugar content, to save syns we recommend choosing the snack-sized version of these chocolate bars.

Jennifer is a certified nutritionist and weight loss coach with a Master's in Nutrition from Cambridge. With over 10 years experience, she shares healthy recipes and science-backed slimming tips on SheCooksSheEats to help people reach their wellness goals. Jennifer stays up-to-date by regularly attending conferences and continuing her nutrition education. She aims to provide research-backed advice to inspire balanced, happy living.
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