MOTORISTS hoping to save money on petrol can no longer rely on the weekly petrol price cycle.
That is the message coming from Matilda Blue Currumbin owner Ron Chambers, who sees how the prices change every day.
"There is no specific day anymore it varies," Mr Chambers said.
"Every day is different."
Petrol takes a big chunk out of most people budget each week and it is also the one expense that fluctuates from week to week.
Statists from petrol price watchdog MotorMouth confirmed Mr Chambers' views on unpredictable petrol prices.
According to the website, last week petrol prices peaked on Thursday across the Gold Coast at 144.1c a litre.
The lowest point was on Monday, with fuel at 134.7c a litre.
Petrol prices were in decline across the weekend.
Motorists can check the petrol price websites for themselves but Mr Chambers has his own system in place for customers.
"What we try and do is SMS customers when everyone else is going up," he said.
"We try and keep prices the same for about a day, day and a half after the SMS goes out.
"It's proving a very popular service."
Mr Chambers said he offered the SMS service at all of his four petrol stations.
The NRMA also offer people a weekly report that include speculation on what direction petrol prices will do the following week.
"Given the current market forces with an increase in the Mogas price and a higher terminal-gate price, regular unleaded petrol prices should rise at least one cent per litre for the next cycle starting at the end of next week," the report stated.