Coke Zero is being phased out across the ditch, but there is no sign it will happen here.
The drink has been on shelves since 2006, and is one of a number of sugar-free Coke options, including Diet, and Coca-Cola, Stevia.
Marketing expert Jill Brinsdon told Larry Williams many people appear confused as to what Coke Zero means.
"Some people could think it means zero caffeine, when in fact it means zero sugar."
LISTEN ABOVE AS JILL BRINSDON SPEAKS TO LARRY WILLIAMS