Western Australia fuel price report: September quarter 2026

Western Australia drivers paid higher prices at the bowser in the September quarter 2026. Across the state, U91 averaged 208.7 c/L, which was 21.9 c/L higher than the previous period. Diesel averaged 247.4 c/L over the same three months, rising by 11.9 c/L. We recorded prices from 969 reporting stations to help you understand what you paid over the quarter.

What drivers paid

Average price by fuel, September quarter 2026 (c/L)

Fuel	Western Australia	Change	Perth	Rest of state
U91	208.7	+21.9	198.1	218.2
Diesel	247.4	+11.9	234.1	253.2
P95	217.0	+22.5	214.3	223.6
P98	226.3	+21.3	223.2	230.8
LPG	161.4	+6.1	156.1	184.7

Our station-day average tracks the latest price at each service station every day. Across Western Australia, U91 averaged 208.7 c/L over the September quarter 2026, which was a rise of 21.9 c/L. Diesel averaged 247.4 c/L, an increase of 11.9 c/L. Because we began collecting data on 13 April 2026, this comparison covers the previous period from that date.

P95 averaged 217 c/L, P98 averaged 226.3 c/L, and LPG averaged 161.4 c/L.

Perth against the rest of Western Australia

Drivers filling up in Perth paid less than those travelling through regional areas. In the capital, U91 averaged 198.1 c/L for the quarter, making Perth the second cheapest of the 8 capital cities. Outside the city, the rest of Western Australia averaged 218.2 c/L. This means regional drivers paid 20.1 c/L more for U91 than those in Perth. Over the quarter, Perth U91 prices rose by 23 c/L, while regional U91 prices increased by 18.4 c/L. Perth drivers saw U91 peak at 239.8 c/L on 23 September 2026, while the lowest day was 14 July 2026 at 162.2 c/L.

The gap was similar for diesel. In Perth, stations recorded an average of 234.1 c/L, which was up 14.5 c/L and ranked as the second cheapest of the 8 capital cities. The rest of the state averaged 253.2 c/L, an increase of 8.7 c/L. If you filled a diesel tank outside the capital, you paid 19.1 c/L more than you would have in Perth. For diesel, the highest daily average in Perth reached 281.7 c/L on 24 September 2026, and the lowest day fell to 177 c/L on 1 July 2026. For P95, the rest of the state paid 9.3 c/L more than the capital average of 214.3 c/L. For P98, regional drivers paid 7.6 c/L more than the Perth average of 223.2 c/L. LPG drivers outside the city paid 28.6 c/L more than the capital average of 156.1 c/L.

Cheapest and dearest towns

For U91, Oakford was the cheapest town in Western Australia at an average of 185.2 c/L, while Gibson Desert North was the dearest at 373.3 c/L, creating a town spread of 188.1 c/L. Out of 111 ranked towns for U91, 14 were cheaper than the capital, and Burk Oakford offered the lowest U91 average at 184.8 c/L. Filling a 60-litre tank with U91 in Oakford rather than in Gibson Desert North saved $112.86 on average in the September quarter 2026. For diesel, Oakford was again the cheapest town at 220.8 c/L, and Gibson Desert North was the dearest at 392.3 c/L, leaving a spread of 171.5 c/L. We ranked 106 towns for diesel, and 17 proved cheaper than Perth.

Cheapest and dearest towns, September quarter 2026 (c/L)

Fuel		Town	Average	Against Perth	Cheapest station
U91	Cheapest	Oakford	185.2	−12.9	Burk Oakford
U91	Cheapest	Pinjarra	189.2	−8.9	Liberty Pinjarra
U91	Cheapest	Broadwater	190.1	−8.0	Burk Broadwater
U91	Cheapest	West Busselton	192.7	−5.4	Liberty Busselton West
U91	Cheapest	Gidgegannup	193.1	−5.0	Vibe Toodyay Rd
U91	Dearest	Gibson Desert North	373.3	+175.2	Kiwirrkurra Roadhouse & Community Store
U91	Dearest	Drysdale River	343.3	+145.2	Drysdale River Station
U91	Dearest	Sturt Creek	327.5	+129.4	Mulan Community Store
U91	Dearest	Warmun	311.6	+113.5	Warmun Roadhouse
U91	Dearest	Dampier Peninsula	286.0	+87.9	Cygnet Bay
Diesel	Cheapest	Oakford	220.8	−13.3	Burk Oakford
Diesel	Cheapest	Narrogin	222.2	−11.9	Atlas Fuel Narrogin
Diesel	Cheapest	Broadwater	225.7	−8.4	Burk Broadwater
Diesel	Cheapest	Pinjarra	226.4	−7.7	Liberty Pinjarra
Diesel	Cheapest	Moonyoonooka	227.2	−6.9	Refuel Australia - Airport
Diesel	Dearest	Gibson Desert North	392.3	+158.2	Kiwirrkurra Roadhouse & Community Store
Diesel	Dearest	Drysdale River	351.4	+117.3	Kalumburu Mission
Diesel	Dearest	Sturt Creek	340.0	+105.9	Mulan Community Store
Diesel	Dearest	Warmun	337.0	+102.9	Warmun Roadhouse
Diesel	Dearest	Onslow	302.4	+68.3	Thalanyji Food and Fuel

Check before you fill

You can read the full report at fuelradar.com.au/fuel-price-reports/wa/2026-q3 to see how every town ranks and find the cheapest service station in each to help you plan your fuelling stops.

Before you make a detour, compare reported prices and update times on the map at fuelradar.com.au/map. Keep in mind that our report figures are averages over the whole quarter, not the prices you will see at the bowser today.