Fuel retailers are setting prices based on the cost to restock, rather than the cost paid for current supplies, according to data collected by the nation's competition watchdog.
Australia's corporate regulator has told the nation's fuel retailers to explain why petrol price hikes are outstripping increases in the global oil price.
One of Western Australia's most remote bowsers is now also its cheapest, offering diesel at a discount of more than 50 cents per litre compared to Perth outlets.
