The price of petrol is expected to fall in the lead up to Christmas.
Commsec chief economist Craig James says lower regional gasoline prices and a strong Australia dollar will help push down the price at the pump.
"The good news for motorists is that petrol prices should fall over the next few weeks," he said in a statement on Monday.
Commsec predicts the national average retail petrol price will decline by one to two cents a litre.
Australian Institute of Petroleum figures show the average national price for unleaded petrol rose by one cent to 143.4 cents a litre last week.
The metropolitan price rose by 1.6 cents to 141.7 cents a litre, while the average weekly regional price fell by 0.1 cents to 146.9 cents a litre.
Sydney had the cheapest unleaded petrol, down 0.2 of a cent to 138.6 cents a litre, while Darwin had the dearest, despite falling 1.1 cents to 159.9 cents a litre.