Queensland petrol prices have surged to $2.16 per litre at some Brisbane retailers, representing a 50-cent increase above average and costing families an extra $25 to fill their tanks. The price spike occurs outside the expected fuel cycle peak, with the RACQ calling it unjustified and Treasurer David Janetsky demanding an ACCC investigation. The unexpected increase comes just one week before Christmas when thousands of drivers are preparing for holiday travel.