Taking to X (formerly Twitter) one Fanta Fan said: "No idea what Coca Cola are up to but the new Fanta Zero is horrible.
However, the brand's "new and improved" Fanta Zero Sugar soft drink now contains several different sweeteners which are likely to explain the changing flavour.
Asda shoppers clear shelves of Coca-Cola drink scanning for just 12p a can ASDA is flogging cans of Fanta for just 12p a can.
Though the person who taste tested it and brought it to market clearly either hadn’t tasted an apple in their life, or lost all sense of taste during the multiple rounds of testing," wrote one.
Another said: "Coca Cola what have you done to the zero sugar Fanta in the UK?.