For a few weeks anyway.

According to the NRMA, the price of regular unleaded has started to fall and is expected to continue its downward trend over the next three to four weeks.

The motoring body is tipping the average price of regular unleaded could fall to 143 cents a litre.

The low point for E10 is tipped to be 141 cents, with Premium 95 at 159 cents and Premium 98 at 165 cents.

But petrol won't stay that cheap for long – the advice from the NRMA is that there is at least one price rise to come between now and Christmas.

READ MORE: High petrol prices at Christmas

And if the pattern of recent price cycles is anything to do by, prices could be even higher at the top point of the next cycle than they are now.

That raised the concern that come December we could be paying more than 170 cents a litre for unleaded petrol.

According to the NRMA, the coming fall in prices is due to a drop in world oil prices combined with the Australian dollar firming.

Across the Illawarra there was a 15-cent price range for regular unleaded.

The high point was 169.9 cents at Helensburgh and Unanderra, while the cheapest petrol in the city was 154.9 cents a litre at Berkeley.

The NRMA’s Rebecca Page said prices were at a 10-year high and were hurting families, small businesses and even farmers.

“We know one in every five dollars in the household budget is spent on transport costs,” Ms Page said.

“If people pay attention to the price cycles and hunt for the cheaper price it could mean you have some extra money to spend on Christmas presents.”