Mars 4 x 51 g: version 2
Saved 2026-09-25 19:19 by @benjaminsen (bot): Open Food Facts photos requested with the result. This is the current version.
Source of v2
# Mars 4 x 51 g <!--product-->
## Identity <!--identity-->
gtin: 05000159481090
name: Mars 4 x 51 g
family: family/mars-bar
default_observation: gb-2015
summary: Four-bar multipack of the 51 g Mars caramel and nougat bar, 204 g, made in Slough for the British and Irish market and photographed in 2015 with a "3+1 free" flash.
brand: brand/mars
category: category/10000045
net_content: 204 g
country_of_sale: GB, IE
country_of_origin: GB
pack_quantity: 4
piece_count: 4
pack_format: flow-wrapped multipack
<!--/identity-->
## Relations <!--relations-->
| role | target | market | from | until | ended | status | source | note |
| ------------------- | ----------------------------------------- | ------ | ---- | ----- | ----- | ------- | --------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| brand_owner_at_sale | company/mars-incorporated | | | | | sourced | ^wp-mars | Wikipedia names Mars Inc. as the producer of the Mars bar, made in Slough since 1932. |
| manufactured_by | company/mars-wrigley-confectionery-uk | | | | | derived | ^off-back | The pack prints a "Made in Slough, UK" roundel and the Slough line code SL000; the Slough chocolate factory on Dundee Road is run by this company, registered as Mars Chocolate UK Limited in 2015. |
| gs1_prefix_owner | company/mars-wrigley-confectionery-france | | | | | sourced | ^gs1-gdsn | GS1's GDSN trading-partner list carries GLN 5000159000000 against MARS CHOCOLAT FRANCE, the former name of Mars Wrigley Confectionery France, which states prefix 5000159 on its page. |
<!--/relations-->
## Markets <!--markets-->
| country | status | source | note | observed | condition | origin | price |
| ------- | ------- | --------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------- | --------- | ------ | ----- |
| GB | printed | ^off-back | The back prints a GB block, "Freepost Mars Consumer Care", the UK number 0845 0450042, www.mars.co.uk and www.marsnutrition.co.uk; the front carries the UK traffic-light panel. | 2015-03-07 | | GB | |
| IE | printed | ^off-back | The same back prints an IRL block, "Mars Ireland, Box 3856, Dublin 4", with the Irish lo-call number 1890 812 315. | 2015-03-07 | | GB | |
<!--/markets-->
## Aliases <!--aliases-->
| name | type | locale | from | until |
| -------------------- | ------ | ------ | ---- | ----- |
| Mars 4 pack | search | en | | |
| Mars 3+1 free | search | en | | |
| Mars multipack 204 g | search | en | | |
<!--/aliases-->
## Ingredients <!--ingredients-->
| ingredient | role | kind | note | percent | basis | market | from | until | source | id | observation | parent_id | position | printed_name | state |
| ------------------------------ | ---------- | ----- | ---------------------------------- | ------- | ----- | ------ | ---- | ----- | --------- | ----- | ----------- | --------- | -------- | -------------------------- | ----- |
| ingredient/sugar | | label | | | | | | | ^off-back | gb-1 | gb-2015 | | 1 | sugar | known |
| ingredient/glucose-syrup | | label | | | | | | | ^off-back | gb-2 | gb-2015 | | 2 | glucose syrup | known |
| ingredient/skimmed-milk-powder | | label | | | | | | | ^off-back | gb-3 | gb-2015 | | 3 | skimmed milk powder | known |
| ingredient/cocoa-butter | | label | | | | | | | ^off-back | gb-4 | gb-2015 | | 4 | cocoa butter | known |
| ingredient/cocoa-mass | | label | | | | | | | ^off-back | gb-5 | gb-2015 | | 5 | cocoa mass | known |
| ingredient/sunflower-oil | | label | | | | | | | ^off-back | gb-6 | gb-2015 | | 6 | sunflower oil | known |
| ingredient/butterfat | | label | printed as "milk fat" | | | | | | ^off-back | gb-7 | gb-2015 | | 7 | milk fat | known |
| ingredient/lactose | | label | | | | | | | ^off-back | gb-8 | gb-2015 | | 8 | lactose | known |
| ingredient/whey-powder | | label | declared "from milk" on the label | | | | | | ^off-back | gb-9 | gb-2015 | | 9 | whey powder (from milk) | known |
| ingredient/palm-fat | | label | | | | | | | ^off-back | gb-10 | gb-2015 | | 10 | palm fat | known |
| ingredient/fat-reduced-cocoa | | label | | | | | | | ^off-back | gb-11 | gb-2015 | | 11 | fat reduced cocoa | known |
| ingredient/barley-malt-extract | | label | | | | | | | ^off-back | gb-12 | gb-2015 | | 12 | barley malt extract | known |
| ingredient/soy-lecithin | emulsifier | label | | | | | | | ^off-back | gb-13 | gb-2015 | | 13 | emulsifier (soya lecithin) | known |
| ingredient/salt | | label | | | | | | | ^off-back | gb-14 | gb-2015 | | 14 | salt | known |
| ingredient/egg-white-powder | | label | | | | | | | ^off-back | gb-15 | gb-2015 | | 15 | egg white powder | known |
| ingredient/milk-protein | | label | printed as hydrolysed milk protein | | | | | | ^off-back | gb-16 | gb-2015 | | 16 | hydrolysed milk protein | known |
| ingredient/vanilla-extract | | label | printed as natural vanilla extract | | | | | | ^off-back | gb-17 | gb-2015 | | 17 | natural vanilla extract | known |
<!--/ingredients-->
## Observations <!--observations-->
| id | label | kind | market | language | valid_from | valid_until | observed | status | ingredients_text | ingredients_declaration | ingredients_exempt_basis | source | note | net_content | pack_quantity | piece_count | pack_format | model_number |
| ------- | ----------------------------------------------------------- | ----- | ------ | -------- | ---------- | ----------- | ---------- | --------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------- | ------------------------ | --------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------- | ------------- | ----------- | ---------------------- | ------------ |
| gb-2015 | British and Irish "3+1 free" four-pack photographed in 2015 | label | GB, IE | en | | | 2015-03-07 | supported | Milk chocolate with soft nougat (32%) and caramel centre (27%). Ingredients: sugar, glucose syrup, skimmed milk powder, cocoa butter, cocoa mass, sunflower oil, milk fat, lactose, whey powder (from milk), palm fat, fat reduced cocoa, barley malt extract, emulsifier (soya lecithin), salt, egg white powder, hydrolysed milk protein, natural vanilla extract. (May contain: peanut). Milk chocolate contains milk solids 14% minimum. Milk chocolate contains vegetable fats in addition to cocoa butter. | listed | | ^off-back | Read from five 2000 x 1482 px Open Food Facts uploads of 2015-03-07: front, barcode side, underside, nutrition panel and ingredient statement, all legible. The underside is stamped with the best-before date 10-01-16 and the line code "503 F1 SL000 #4 16:10". The front flash reads "3+1 FREE" and "1x = 51g". | 204 g | 4 | 4 | flow-wrapped multipack | |
<!--/observations-->
## Nutrition panels <!--nutrition_panels-->
| id | observation | label | basis | basis_state | basis_note | declaration | exempt_basis | source | note |
| ------- | ----------- | ------------------------------------- | ----- | ----------- | ------------------------------------------------------------------- | ----------- | ------------ | -------------- | -------------------------------------------------------------------------------------------------------- |
| gb-100g | gb-2015 | Nutrition Information / 100g | 100 g | as_sold | | transcribed | | ^off-nutrition | |
| gb-51g | gb-2015 | Nutrition Information / 51g (one bar) | 51 g | as_sold | printed serving column; "Portions per pack: 4, Portion size: 51.0g" | transcribed | | ^off-nutrition | Reference intakes are printed beside each figure against 8 400 kJ / 2 000 kcal and stored in dv_percent. |
<!--/nutrition_panels-->
## Nutrition values <!--nutrition_values-->
| panel | nutrient | value | qualifier | value_max | dv_percent | printed_value | state | method | source | note |
| ------- | --------------- | ----- | --------- | --------- | ---------- | ------------- | ----- | ------- | -------------- | -------------------------------------------------------------------------------------------------- |
| gb-100g | energy_kj | 1890 | exact | | | 1890kJ | known | printed | ^off-nutrition | |
| gb-100g | energy_kcal | 450 | exact | | | 450kcal | known | printed | ^off-nutrition | The Open Food Facts typed record gives 446.5 kcal; the photographed panel and front both read 450. |
| gb-100g | fat_g | 16.9 | exact | | | 16.9g | known | printed | ^off-nutrition | |
| gb-100g | saturated_fat_g | 8.2 | exact | | | 8.2g | known | printed | ^off-nutrition | |
| gb-100g | carbohydrate_g | 69.3 | exact | | | 69.3g | known | printed | ^off-nutrition | |
| gb-100g | sugars_g | 59.9 | exact | | | 59.9g | known | printed | ^off-nutrition | |
| gb-100g | protein_g | 4.3 | exact | | | 4.3g | known | printed | ^off-nutrition | |
| gb-100g | salt_g | 0.39 | exact | | | 0.39g | known | printed | ^off-nutrition | |
| gb-51g | energy_kj | 964 | exact | | 12 | 964kJ (12%) | known | printed | ^off-nutrition | |
| gb-51g | energy_kcal | 230 | exact | | 12 | 230kcal (12%) | known | printed | ^off-nutrition | |
| gb-51g | fat_g | 8.6 | exact | | 12 | 8.6g (12%) | known | printed | ^off-nutrition | |
| gb-51g | saturated_fat_g | 4.2 | exact | | 21 | 4.2g (21%) | known | printed | ^off-nutrition | |
| gb-51g | carbohydrate_g | 35.3 | exact | | 13 | 35.3g (13%) | known | printed | ^off-nutrition | |
| gb-51g | sugars_g | 30.5 | exact | | 34 | 30.5g (34%) | known | printed | ^off-nutrition | |
| gb-51g | protein_g | 2.2 | exact | | 4 | 2.2g (4%) | known | printed | ^off-nutrition | |
| gb-51g | salt_g | 0.2 | exact | | 3 | 0.20g (3%) | known | printed | ^off-nutrition | |
<!--/nutrition_values-->
## Allergen declarations <!--allergens-->
| observation | allergen | declaration | source | note |
| ----------- | -------- | ----------- | --------- | ------------------------------------------------------------------------------------------------------ |
| gb-2015 | milk | contains | ^off-back | Set in bold: skimmed milk powder, milk fat, lactose, whey powder (from milk), hydrolysed milk protein. |
| gb-2015 | gluten | contains | ^off-back | "barley malt extract", barley in bold. |
| gb-2015 | soybeans | contains | ^off-back | "emulsifier (soya lecithin)", soya in bold. |
| gb-2015 | eggs | contains | ^off-back | "egg white powder", egg in bold. |
| gb-2015 | peanuts | may_contain | ^off-back | "(May contain: peanut)". |
<!--/allergens-->
## Label claims <!--claims-->
| observation | claim | kind | source | note |
| ----------- | ------------------------ | ----- | ---------- | ---------------------------------------------- |
| gb-2015 | Suitable for Vegetarians | label | ^off-back | Printed on the underside beside the date code. |
| gb-2015 | Made in Slough, UK | label | ^off-back | Roundel with a Union flag beside the barcode. |
| gb-2015 | 3+1 free | label | ^off-front | Yellow promotional flash on the front. |
<!--/claims-->
## Research gaps <!--research_gaps-->
| observation | domain | state | detail | source |
| ----------- | -------- | ------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------ |
| gb-2015 | identity | stale | The only dated evidence for this barcode is the 2015 pack, best before January 2016. British four-packs are now sold as 4 x 39.4 g under other barcodes (5000159484527, 5000159551823), but no maker page states when this 204 g article was withdrawn, so no status is set. | ^off |
| | markets | unknown | Searched amazon.co.uk on 2026-09-25 through a web search restricted to the site for "Mars 4 x 51g multipack" (the store's own search answered 202/503 to this agent): only the 4 x 39.4 g multipack B01MTN9PBV and 24- and 48-bar cases of the 51 g single were found, no listing of this 204 g four-pack. | |
| | markets | unknown | Searched amazon.ie on 2026-09-25 for "Mars 4 x 51g", "Mars" and 5000159481090: no listing of this four-pack; the brand search shows the 51 g single, 32- and 40-bar cases, a 5 x 45 g and a 10 x 45 g multipack. | |
| | markets | unknown | A web search for the barcode 5000159481090 on 2026-09-25 found no retailer listing that prints it; a Tesco "Mars Ice Cream 4 x 51g" is an ice-cream article, not this pack. | |
<!--/research_gaps-->
## Research <!--research-->
structure_version: 2
reviewed_on: 2026-09-25
note: Built from the five 2015 Open Food Facts label photographs of this barcode, all legible, with the family page, Wikipedia and GS1's GDSN list for context and the prefix holder.
<!--/research-->
## Meta <!--meta-->
title: Mars 4 x 51 g (5000159481090)
description: The 204 g four-pack of 51 g Mars bars made in Slough for Britain and Ireland, with its 2015 ingredient list, nutrition per 100 g and per bar, and allergens.
<!--/meta-->
## Images <!--images-->
| asset | kind | source | licence | attribution | url | accessed | note | provider_entity_id | provider_image_id | source_image_url | download_url | retrieved_at | matched_barcode | match_method | match_confidence | original_width | original_height | stored_width | stored_height | upscaled | observation |
| ------------------------ | ----------- | --------------- | ------------ | ---------------------------- | ----------------------------------------------------- | ---------- | ---- | ------------------ | ----------------- | ------------------------------------------------------------------------------------------- | ------------ | ------------------------ | --------------- | ------------ | ---------------- | -------------- | --------------- | ------------ | ------------- | -------- | ----------- |
| front-e01f016d.jpg | front | open-food-facts | cc-by-sa-3.0 | Open Food Facts contributors | https://world.openfoodfacts.org/product/5000159481090 | 2026-09-25 | | 5000159481090 | front_en | https://images.openfoodfacts.org/images/products/500/015/948/1090/front_en.3.full.jpg | | 2026-09-25T19:19:05.843Z | 5000159481090 | barcode | 1 | 2000 | 1482 | 1600 | 1186 | | |
| ingredients-06cbb1bd.jpg | ingredients | open-food-facts | cc-by-sa-3.0 | Open Food Facts contributors | https://world.openfoodfacts.org/product/5000159481090 | 2026-09-25 | | 5000159481090 | ingredients_en | https://images.openfoodfacts.org/images/products/500/015/948/1090/ingredients_en.9.full.jpg | | 2026-09-25T19:19:06.394Z | 5000159481090 | barcode | 1 | 1621 | 386 | 1600 | 381 | | |
| nutrition-1a054e2f.jpg | nutrition | open-food-facts | cc-by-sa-3.0 | Open Food Facts contributors | https://world.openfoodfacts.org/product/5000159481090 | 2026-09-25 | | 5000159481090 | nutrition_en | https://images.openfoodfacts.org/images/products/500/015/948/1090/nutrition_en.8.full.jpg | | 2026-09-25T19:19:07.551Z | 5000159481090 | barcode | 1 | 1466 | 716 | 1466 | 716 | | |
<!--/images-->
## References <!--references-->
| ref | url | title | accessed | publisher | kind | published | record_id | locator | licence | attribution | upstream |
| ------------- | ----------------------------------------------------------------------- | -------------------------------------------------------------------------------- | ---------- | --------------- | ----------- | --------- | ------------- | ------------------------------------------------------ | ------------ | ---------------------------- | -------- |
| off | https://world.openfoodfacts.org/product/5000159481090 | Mars, 4 * 51 g (204 g) | 2026-09-25 | Open Food Facts | catalogue | | 5000159481090 | | ODbL | Open Food Facts contributors | |
| off-front | https://images.openfoodfacts.org/images/products/500/015/948/1090/1.jpg | Front of the Mars "3+1 free" four-pack | 2026-09-25 | Open Food Facts | pack | | 5000159481090 | imgid 1, 2000 x 1482 px, uploaded 2015-03-07 | CC BY-SA 3.0 | Open Food Facts contributors | off |
| off-back | https://images.openfoodfacts.org/images/products/500/015/948/1090/5.jpg | Back, barcode side and underside of the four-pack, with the ingredient statement | 2026-09-25 | Open Food Facts | pack | | 5000159481090 | imgids 2, 3 and 5, 2000 x 1482 px, uploaded 2015-03-07 | CC BY-SA 3.0 | Open Food Facts contributors | off |
| off-nutrition | https://images.openfoodfacts.org/images/products/500/015/948/1090/4.jpg | Nutrition panel of the four-pack | 2026-09-25 | Open Food Facts | pack | | 5000159481090 | imgid 4, 2000 x 1482 px, uploaded 2015-03-07 | CC BY-SA 3.0 | Open Food Facts contributors | off |
| wp-mars | https://en.wikipedia.org/wiki/Mars_bar | Mars bar | 2026-09-25 | Wikipedia | publication | | | History, Sizes | CC BY-SA | Wikipedia contributors | |
| gs1-gdsn | https://www.gs1.org/docs/gdsn/stats/gdsn_trading_partners.pdf | GDSN trading partners: GS1 GDSN member companies and their GLNs | 2026-09-25 | GS1 | registry | | 5000159000000 | GLN 5000159000000, MARS CHOCOLAT FRANCE | | | |
<!--/references-->
## About <!--about-->
Mars 4 x 51 g is a 204 g multipack of four full-size Mars bars, milk chocolate with soft nougat (32%) and caramel centre (27%), sold under barcode 5000159481090.[^off-back] The pack photographed in 2015 carries a yellow "3+1 free" flash and the British front-of-pack traffic lights, and declares 1890 kJ / 450 kcal per 100 g and 964 kJ / 230 kcal per 51 g bar.[^off-front][^off-nutrition] A roundel beside the barcode reads "Made in Slough, UK", the underside says "Suitable for Vegetarians", and the back carries consumer-care blocks for Great Britain and Ireland.[^off-back] Forrest Mars Sr. first made the bar in Slough in 1932, and Mars, Incorporated still owns it.[^wp-mars]
The four-pack sits among the Mars family's British multipacks, most of which now hold 39.4 g bars; this one holds the 51 g single-bar size. The company prefix 5000159 belongs to the group's French confectionery company: GS1's list of GDSN member companies carries GLN 5000159000000 against MARS CHOCOLAT FRANCE, since renamed Mars Wrigley Confectionery France.[^gs1-gdsn]
<!--/about-->