Daily average unleaded prices in cents per litre, Sydney, Melbourne, Brisbane and Perth, September to October 2026. Source: Informed Sources.
Here are daily average retail unleaded prices in four major Australian cities over the past six weeks, from early September to mid-October 2026.
What the chart shows
Prices started the period at around 205 cents per litre and climbed steeply through mid-September, adding roughly 30 cents in a little over two weeks. Sydney, Melbourne and Brisbane then moved closely together, holding in the mid-230s before edging up to around 240 cents in mid-October and easing slightly towards the end of the period.
Perth moves differently
Perth followed the same overall trend but with sharper short-term swings: bigger jumps up and steeper falls in between. By the end of the period it was the cheapest of the four cities, at around 233 cents per litre.
The data behind it
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