Retail fuel prices are dropping due to falling demand for oil overseas.
Z Energy, formerly known as Shell, says it dropped the price of both 91 octane and premium petrol by three cents a litre.
Caltex and BP have made the same cut, and 91 octane petrol is now $2.15 a litre while premium is $2.23
Diesel is unchanged at $1.55 a litre.
BP says the international price for oil has been dropping for the past three days, thanks to decreased demand for oil due to slowing economic growth around the globe.
