We're being urged to check petrol prices before filling up ahead of the Long Weekend.
Costs at the pump are expected to rise in Adelaide and Sydney but drop in Brisbane, Melbourne and Perth.
South Aussies have been paying the second lowest average price for the quarter at 126.1 cents per litre behind people in New South Wales.
The best price on offer is 124.5 cents per litre in the Western and beach suburbs.
While the most expensive can be found in the Hills at around 128.9 cents per litre.
Currently there’s an 8.7 cents per litre difference between the lowest and highest average price around the country.