Australians have hit out at at chocolate giant Mars after discovering some of the nation's most popular chocolate bars are now being made overseas, including in China and Egypt.

Mars - the nation's second largest confectionery manufacturer - has made brands including Maltesers, tour hồ ba bể Twix, M&Ms and Snickers for the Australian market for more than 40 years.

But a Daily Mail Australia investigation has found just three of Mars' products on a standard supermarket shelf now claim to be made Down Under.

Other products say they have been made in China, the Netherlands and Egypt - while some would not even specify the country of manufacture.

Twix bars for the Australian market are produced in the African country - where Mars announced they were investing $83million in 2013 to build a production line in Cairo.

It is not known how long the products have been made in overseas countries but eagle-eyed customers made the discovery recently before claiming they tasted nothing like the originals on Facebook. 








Chocolate manufacturer Mars has prompted outrage from customers for making some of their most popular brands in China (pictured M&Ms blocks, which are made in China)







Pictured: Daily Mail Australia news reporter Brittany Chain enjoys a Maltesers Teasers chocolate bar - which launched last year and is also manufactured in China