RACQ spokesman Vivien O'Connor said drivers were spending anywhere from 109.7c to 151.9c over the Christmas holidays but the region was now in the cheap phase of the price cycle.
"Motorists on the Sunshine Coast should fill up the tank now and aim for 116 cents per litre for unleaded," she said.
"About 35 per cent of sites are selling unleaded for 116 cents per litre or less and 10.9 per cent of sites are selling unleaded for 110c cents per litre or less."
Most sites in Caloundra and Noosa are selling for 117c or 118c, while others are charging as much as 123c.