Western Australia Diesel Falls 25 Cents as Perth Suburbs Break Below 160 Cents a Litre

Western Australia Diesel Falls 25 Cents as Perth Suburbs Break Below 160 Cents a Litre

A 25.6 cent overnight drop in Western Australia's average diesel price is the kind of number that makes you stop and double check the spreadsheet. But the data from 21st Feb 2026 confirms it: across 460 WA stations, the state average has fallen from 205.8 to 180.2 cents per litre, a 12.4 per cent decrease that puts Western Australia firmly among the most competitive diesel markets in the country.

Perth's Southern Corridor Leads the Way

The most notable savings are concentrated in Perth's southern suburbs. Byford is leading the pack with an average diesel price of just 162.0 cents per litre across three stations, with the cheapest dropping to 159.5 cents. That represents a substantial discount compared to the state average.

Further south, Forrestdale has a station offering diesel at 156.9 cents, among the lowest individual prices recorded in the Perth metro area today. Nearby Kwinana Beach averages 166.1 cents across five stations, while Baldivis sits at 168.1 cents.

Worth noting is the variation even within these affordable corridors. Forrestfield tells an interesting story: its cheapest station is at 158.7 cents but the most expensive charges 181.9 cents, a 23.2 cent spread across just four stations. Motorists who take the time to compare before filling up could save substantially.

Northern Suburbs Are Competitive Too

It is not just the south seeing these prices. Morley in Perth's northeast averages 165.8 cents across three stations, while Bassendean nearby is at 169.4 cents. Osborne Park, a popular commercial hub, shows a wider spread with prices ranging from 163.3 to 183.9 cents per litre.

Canning Vale, one of Perth's busiest retail areas, averages 173.3 cents across five stations. And for those commuting through Maddington or Welshpool, prices hover around the 170 cents mark.

Regional WA Holds Steady

Analysis reveals that regional centres are also offering competitive pricing. East Bunbury averages 166.7 cents, making it one of the cheapest regional options anywhere in Australia right now. Albany on the south coast sits at 172.4 cents across six stations, while Geraldton further north averages 172.7 cents.

Even the smaller towns are holding their own. Pinjarra averages 170.3 cents across five stations, and Williams on the Albany Highway is at 172.9 cents. The data indicates that WA's regional competition is keeping prices honest well beyond the metro fringe.

How WA Compares Nationally

The numbers tell an interesting story when you look at the national picture. Western Australia now has the cheapest state average diesel at 180.2 cents, narrowly ahead of Victoria at 180.4 and New South Wales at 181.7 cents per litre.

South Australia has moved in the opposite direction, with diesel increasing 5.5 cents to average 184.6 cents across 141 stations. Tasmania sits at 185.2 cents, while the ACT is at 193.2 cents.

The real outlier remains Queensland, where the average is 200.4 cents per litre with a 64 cent spread between the cheapest at 166.9 and the most expensive at 230.9 cents. That variation across just 76 reporting stations suggests significant inconsistency in pricing across the Sunshine State.

And then there is the Northern Territory, where the state average of 235.3 cents and a staggering 249 cent spread between the cheapest and most expensive stations continues to weigh heavily on remote communities.

What This Means for Motorists

This 25 cent correction in WA is significant for anyone running a diesel vehicle, particularly commercial operators and tradespeople who fill up regularly. On a standard 60 litre tank, the difference between yesterday's average and today's works out to a saving of around $15.36 per fill.

For Perth motorists specifically, the data indicates that heading to the southern suburbs around Byford, Forrestdale, or Kwinana Beach before filling up could save another 15 to 20 cents per litre compared to inner city stations.

The numbers are clear: motorists who check prices before heading to the servo could save substantially this weekend, particularly across Western Australia's metro area. Whether this price correction will hold into next week remains to be seen, but for now, WA drivers are getting the best diesel deal in the country.