Western Australia fuel prices, September quarter 2026

Prices from 1 July to 30 September 2026Updated

Western Australia U91 average

208.7c/L

+21.9 c/L on the partial June quarter 2026

Perth U91
198.1c/L
Rest of Western Australia U91
218.2c/L
Diesel average
247.4c/L

Perth month by month, what makes up a litre, margins, the price cycle, excise, the other capitals, and every regional town we could rank.

Comparison period: 13 April 2026 to 30 June 2026. This covers part of the calendar period. The change compares the available days, not two full calendar periods. Station coverage can also change.

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Report highlights

Quote these with the credit: Source: FuelRadar Australia, Western Australia fuel prices, September quarter 2026, fuelradar.com.au/fuel-price-reports/wa/2026-q3

  1. Perth reported prices averaged 198.1 c/L for U91 in the September quarter 2026, up 23.0 c/L on the partial June quarter 2026.

  2. Pinjarra was the cheapest town in Mandurah for U91 in the September quarter 2026 at 193.1 c/L, 5.0 c/L below Perth.

  3. Bunbury averaged 198.6 c/L for U91 in the September quarter 2026, 0.5 c/L above Perth, and was cheaper than Perth in 1 of 6 months since our records began on 13 April 2026.

  4. In the September quarter 2026, Tuesday was the cheapest day to buy U91 in Perth and Wednesday the dearest, 13.8 c/L apart on average: $8.28 on a 60-litre tank.

  5. Filling a 60-litre tank with U91 in Oakford (rural) rather than in Drysdale River (rural) saved $94.86 on average in the September quarter 2026.

  6. Independent service stations in Western Australia averaged 1.3 c/L more than the major brands for U91 in the September quarter 2026, and 8.6 c/L less in Perth.

  7. Diesel cost 36.0 c/L more than U91 in Perth in the September quarter 2026, down from 44.5 c/L in the partial June quarter 2026.

  8. Oakford (rural) was Western Australia’s cheapest town for U91 in the September quarter 2026 at 185.2 c/L, 12.9 c/L below Perth.

Key points

Written from FuelRadar’s figures for this period and checked against them.

  1. Oakford (rural) was Western Australia's cheapest town for U91, averaging 185.2 c/L, which was 12.9 c/L below Perth.

  2. Perth averaged 198.1 c/L for U91, making it the second cheapest of the 8 capital cities.

  3. Drivers in the rest of the state paid an average of 218.2 c/L for U91, sitting 20.1 c/L higher than Perth.

  4. Wholesale unleaded prices at the Perth terminal averaged 192.2 c/L, the highest on record since AIP's series began in March quarter 2004 (nominal prices).

  5. Perth U91 reached a daily average of 239.8 c/L on 23 September 2026, setting a new high since our records began on 13 April 2026.

  6. Perth followed a regular price cycle with 12 price hikes during the quarter, averaging 7.6 days between peaks.

  7. Diesel cost 36.0 c/L more than U91 in Perth, down from a 44.5 c/L premium in the June quarter 2026.

  8. Busselton was the cheapest regional centre for U91 at 197.3 c/L, averaging 0.8 c/L less than Perth.

  9. Drysdale River (rural) was the dearest town for U91 at 343.3 c/L, costing 145.2 c/L more than the capital.

  10. The fuel excise rose by 17.1 c/L on 3 August 2026 to 53.7 c/L, restoring the full rate.

  11. Since the 2026–27 financial year began on 1 July 2026, Perth U91 prices climbed 74.9 c/L to end the quarter at 239.0 c/L.

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Every fuel in Western Australia

Perth reported prices averaged 198.1 c/L for U91 in the September quarter 2026, up 23.0 c/L on the partial June quarter 2026 (from 13 April, when this station-price series starts). Across Western Australia, U91 averaged 208.7 c/L, up 21.9 c/L on the partial June quarter 2026. Perth reported prices averaged 234.1 c/L for diesel in the September quarter 2026, up 14.5 c/L on the partial June quarter 2026. Across Western Australia, diesel averaged 247.4 c/L, up 11.9 c/L on the partial June quarter 2026. The other fuels averaged P95 217.0 c/L, P98 226.3 c/L and LPG 161.4 c/L.

Unleaded 91+20.1 restDiesel+19.1 restPremium 95+9.3 restPremium 98+7.6 restLPG+28.6 rest

Source: FuelRadar (fuelradar.com.au)

Cents a litre. Change is on the partial June quarter 2026, which starts when our full price history does. Difference is the rest of the state against Perth.

Table view
Average price by fuel, September quarter 2026
FuelWestern AustraliaPerthRest of state
Unleaded 91208.7198.1218.2
Diesel247.4234.1253.2
Premium 95217.0214.3223.6
Premium 98226.3223.2230.8
LPG161.4156.1184.7

What makes up a litre in Perth

Of the 198.1 c/L U91 average in Perth, crude oil was 86.0 c/L, wholesale 41.1 c/L, excise 47.6 c/L, GST 18.0 c/L and the retail difference 5.4 c/L. Of the 234.1 c/L diesel average in Perth, crude oil was 86.0 c/L, wholesale 71.3 c/L, excise 47.6 c/L, GST 21.3 c/L and the retail difference 7.9 c/L. Premium 95 has no terminal gate price of its own, so its breakdown uses the unleaded price and its premium sits in the retail difference. Our retail records begin on 13 April 2026, so earlier periods show the wholesale side only.

What makes up a litre of Unleaded 91

Fuel
Loading chart…

Source: FuelRadar (fuelradar.com.au)

How we worked this out

A benchmark illustration using differently weighted period averages, not a matched purchase basket or measured retailer costs. See the same-date retail/TGP comparison separately.

Wholesale is the terminal gate price without GST and excise, less crude oil. GST is one eleventh of the retail price. The retail difference is what is left: the retailer’s costs and margin, without its GST. Bands are rounded so they add up to the retail price.

Retail: FuelRadar station-day averages for Perth. Our retail records begin on 13 April 2026, so a period before then has the wholesale side only, and “dearest” and “cheapest” compare the periods since our records began.

Terminal gate price: AIP, Perth terminal, carried over weekends. Crude oil: Brent spot (US EIA, via FRED) in Australian dollars, at 158.987 litres a barrel. Excise: ATO, averaged over the period’s days.

Every period (3 rows)
What makes up a litre of Unleaded 91, c/L
PeriodCrude oil (Brent, A$)Wholesale: refining, shipping, terminalExciseGSTRetail differenceRetail price
September quarter 202686.041.147.618.05.4198.1
June quarter 2026 (part)88.845.420.615.94.4175.1
2025 averageWholesale side only67.529.051.1———
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Month by month, U91

Perth's daily U91 average went from 164.1 c/L on 1 July to 239.0 c/L on 30 September, and diesel from 177.0 c/L to 275.5 c/L. The highest daily average in Perth was 239.8 c/L for U91 on 23 September and 281.7 c/L for diesel on 24 September. Perth's U91 average was 174.7 c/L in July, 200.3 c/L in August and 220.1 c/L in September. Perth's diesel average was 198.6 c/L in July, 241.2 c/L in August and 262.9 c/L in September.

U91 average by month, September quarter 2026
AreaQuarter
Western Australia208.7
Perth198.1
Rest of Western Australia218.2
Perth South EastArea197.3
Perth South WestArea197.9
Perth North EastArea198.0
Perth North WestArea198.5
Perth InnerArea199.5
MandurahArea201.1

Cents a litre. Each month is the station-day average of the days it has in the period. An area’s months count the same stations as its quarter.

Month by month, diesel

Show diesel month by month
Diesel average by month, September quarter 2026
AreaQuarter
Western Australia247.4
Perth234.1
Rest of Western Australia253.2
Perth North WestArea232.7
Perth North EastArea232.9
Perth South EastArea233.9
Perth South WestArea234.3
Perth InnerArea238.4
MandurahArea241.4

Cents a litre. Each month is the station-day average of the days it has in the period. An area’s months count the same stations as its quarter.

Retail and wholesale on the same days, U91

Perth retail prices compared with the Perth terminal. This is not the delivered wholesale cost at individual stations.

Perth retail prices compared with the Perth terminal. This is not the delivered wholesale cost at individual stations.
PeriodDays used / windowRetail daily meanTGP, same daysGross spread
September quarter 20261 Jul to 30 Sept 2026; 26 carried TGP days. Gaps may occur within this range.92 / 92198.1192.25.9
June quarter 202613 Apr to 30 Jun 2026; 22 carried TGP days. Gaps may occur within this range.79 / 79175.4170.35.1

Each common date counts once. Retail is the mean of the saved daily capital averages, not the station-day-weighted headline mean. TGP uses the same dates and carries the last published value for at most six subsequent calendar days. Retail prices can already include carried station prices. Means and spreads are rounded separately. The gross spread is not profit or a causal explanation. Retail carry limit: 30 days. Unmatched dates are excluded; common days are not a station or sales coverage percentage.

Retail and wholesale on the same days, Diesel

Perth retail prices compared with the Perth terminal. This is not the delivered wholesale cost at individual stations.

Show Diesel comparison
Perth retail prices compared with the Perth terminal. This is not the delivered wholesale cost at individual stations.
PeriodDays used / windowRetail daily meanTGP, same daysGross spread
September quarter 20261 Jul to 30 Sept 2026; 26 carried TGP days. Gaps may occur within this range.92 / 92233.9225.48.5
June quarter 202613 Apr to 30 Jun 2026; 22 carried TGP days. Gaps may occur within this range.79 / 79220.7204.116.6

Worked out the same way as the table above.

Market trends this year

The Perth terminal gate price averaged 192.2 c/L for unleaded and 225.4 c/L for diesel, up 21.9 c/L and up 21.3 c/L on the partial June quarter 2026. Brent crude averaged US$96.3 a barrel, or 86.0 c/L in Australian dollars, with the Australian dollar at an average of 70.62 US cents.

Retail, terminal gate and crude oil prices this year

Chart
Loading chart…

Source: FuelRadar (fuelradar.com.au)

How we worked this out

Retail: FuelRadar daily averages for Perth, from 13 April 2026 when our records begin.

Terminal gate prices (dashed): AIP, Perth terminal, weekdays. Brent crude: US EIA spot price via FRED, converted at each day’s exchange rate and 158.987 litres a barrel.

Daily figures (243 rows)
Retail, terminal gate and crude oil prices this year (c/L), 1 Jan to 30 Sept
DateU91, PerthDiesel, PerthUnleaded terminal gate price
30 Sept239.0275.5228.7
29 Sept225.9276.4228.3
28 Sept229.9278.0228.2
27 Sept230.2278.2—
26 Sept230.8278.2—
25 Sept232.8280.0228.4
24 Sept236.9281.7229.1
23 Sept239.8281.4229.2
22 Sept227.0280.5228.1
21 Sept231.2278.9227.1
20 Sept231.6277.8—
19 Sept232.0275.5—
18 Sept231.3271.2223.9
17 Sept230.6266.6220.8
16 Sept230.8261.8217.9
15 Sept211.4257.2213.3
14 Sept211.9255.9211.2
13 Sept211.7255.5—
12 Sept211.0254.2—
11 Sept212.5252.0209.4
10 Sept214.8250.2207.4
9 Sept217.0249.4204.9
8 Sept200.4248.6202.5
7 Sept203.0247.9200.9
6 Sept203.7247.5—
5 Sept203.5246.5—
4 Sept205.7245.2198.5
3 Sept208.2245.1196.4
2 Sept211.2245.2195.4
1 Sept196.0245.1194.7
31 Aug199.2246.3195.3
30 Aug200.8246.5—
29 Aug201.2246.5—
28 Aug204.6246.7195.5
27 Aug209.0246.4196.6
26 Aug212.0246.0196.8
25 Aug196.7246.0196.7
24 Aug200.0245.8196.4
23 Aug201.3245.1—
22 Aug201.4244.6—
21 Aug203.3244.0195.7
20 Aug205.3242.5194.9
19 Aug207.3241.0194.2
18 Aug191.2239.4193.3
17 Aug193.3237.9192.7
16 Aug194.0237.9—
15 Aug194.4237.6—
14 Aug197.0236.1191.1
13 Aug200.7236.6189.8
12 Aug204.5237.0189.7
11 Aug193.0238.7190.9
10 Aug198.4240.5192.7
9 Aug199.7241.4—
8 Aug200.9241.7—
7 Aug204.8242.6196.4
6 Aug208.2242.5198.3
5 Aug210.7242.4198.5
4 Aug195.7239.8198.1
3 Aug194.8237.9203.4
2 Aug192.3230.8—
1 Aug192.6230.0—
31 July193.8228.6183.3
30 July195.4227.7183.8
29 July197.2226.4183.4
28 July183.8224.6182.5
27 July185.8222.0180.4
26 July185.3220.8—
25 July184.7219.1—
24 July183.4215.7177.1
23 July184.1212.2174.1
22 July185.5209.2172.7
21 July169.5206.2169.7
20 July172.5203.6168.1
19 July172.9203.0—
18 July172.9201.3—
17 July173.7197.8166.0
16 July174.8192.3163.7
15 July175.6188.1161.2
14 July162.2185.6159.8
13 July164.8184.9159.8
12 July165.3184.6—
11 July165.4183.2—
10 July167.2181.9160.0
9 July170.4181.6161.4
8 July173.3181.5162.2
7 July163.0181.7163.4
6 July165.4181.8163.8
5 July165.9184.2—
4 July165.6183.5—
3 July164.6180.3163.3
2 July166.4178.5162.8
1 July164.1177.0160.1
30 June147.9167.8146.5
29 June149.9168.2146.5
28 June150.9168.8—
27 June151.5169.3—
26 June153.2170.1147.5
25 June156.8172.5148.0
24 June160.3174.0148.3
23 June151.4176.6150.3
22 June155.9179.5151.0
21 June157.6180.9—
20 June158.3181.9—
19 June159.9184.8153.0
18 June164.1187.5156.3
17 June168.0188.9158.7
16 June159.0191.0160.9
15 June162.6192.4160.7
14 June163.5192.7—
13 June163.7192.6—
12 June164.9193.3160.0
11 June167.9193.5159.3
10 June171.2194.0158.4
9 June159.8194.2158.1
8 June163.1195.4158.2
7 June164.3196.1—
6 June164.7196.7—
5 June166.7197.7158.9
4 June170.5200.4159.1
3 June174.5201.6161.2
2 June165.7203.0163.6
1 June169.8205.7165.9
31 May171.2206.3—
30 May172.1206.8—
29 May175.3208.9168.8
28 May180.8210.8171.6
27 May186.4213.2174.6
26 May176.3214.0177.7
25 May180.1215.2179.2
24 May181.4215.7—
23 May181.7216.1—
22 May182.2216.1179.7
21 May184.3216.3179.2
20 May187.5215.9177.3
19 May174.1217.1173.9
18 May176.2218.2172.1
17 May176.6218.7—
16 May176.5219.4—
15 May177.0219.1170.9
14 May179.7219.9171.2
13 May184.2222.1172.0
12 May173.6225.6174.8
11 May177.9228.1177.2
10 May179.7229.9—
9 May180.1230.8—
8 May180.9233.2180.2
7 May183.6235.7181.1
6 May186.6237.5180.6
5 May173.9239.6180.9
4 May176.7240.5181.1
3 May177.2240.6—
2 May177.2240.9—
1 May178.4241.2180.5
30 Apr182.7241.8179.7
29 Apr188.1242.3178.7
28 Apr175.1244.2177.8
27 Apr179.7246.0177.6
26 Apr180.1246.9—
25 Apr180.6247.6—
24 Apr182.3251.4176.9
23 Apr187.0259.3179.1
22 Apr194.0269.1181.2
21 Apr188.5277.4184.0
20 Apr194.2282.7185.4
19 Apr195.9286.3—
18 Apr197.2288.4—
17 Apr201.6294.7188.8
16 Apr207.1300.6190.2
15 Apr214.4306.2194.1
14 Apr207.3311.4197.2
13 Apr212.7315.7199.8
10 Apr——203.9
9 Apr——207.1
8 Apr——206.3
7 Apr——202.4
6 Apr——202.4
3 Apr——203.2
2 Apr——203.9
1 Apr——204.5
31 Mar——229.5
30 Mar——242.1
27 Mar——246.8
26 Mar——249.5
25 Mar——248.8
24 Mar——245.0
23 Mar——243.0
20 Mar——238.0
19 Mar——235.4
18 Mar——230.8
17 Mar——223.6
16 Mar——218.6
13 Mar——210.1
12 Mar——204.7
11 Mar——193.7
10 Mar——188.1
9 Mar——175.4
6 Mar——168.7
5 Mar——162.4
4 Mar——159.9
3 Mar——157.6
2 Mar——157.0
27 Feb——156.0
26 Feb——155.5
25 Feb——154.9
24 Feb——153.3
23 Feb——152.2
20 Feb——152.0
19 Feb——152.6
18 Feb——153.1
17 Feb——153.6
16 Feb——153.9
13 Feb——153.7
12 Feb——153.1
11 Feb——152.5
10 Feb——152.1
9 Feb——152.0
6 Feb——152.0
5 Feb——152.2
4 Feb——152.4
3 Feb——153.0
2 Feb——153.2
30 Jan——152.4
29 Jan——152.9
28 Jan——153.2
27 Jan——153.3
26 Jan——153.3
23 Jan——153.4
22 Jan——153.5
21 Jan——153.6
20 Jan——153.5
19 Jan——153.6
16 Jan——153.1
15 Jan——152.5
14 Jan——152.4
13 Jan——152.3
12 Jan——152.4
9 Jan——152.8
8 Jan——153.4
7 Jan——153.8
6 Jan——154.2
5 Jan——154.4
2 Jan——154.6
1 Jan——154.6
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Perth against the rest of Western Australia

Perth averaged 198.1 c/L for U91 and the rest of Western Australia 218.2 c/L, so reported prices in the rest of Western Australia averaged 20.1 c/L more than Perth. Perth averaged 234.1 c/L for diesel and the rest of Western Australia 253.2 c/L, so reported prices in the rest of Western Australia averaged 19.1 c/L more than Perth.

Source: FuelRadar (fuelradar.com.au)

Each day's average over every station with a price that day. Perth is its urban area.
Daily averages (92 rows)
U91 daily averages, Perth and Rest of Western Australia, 1 July to 30 Sept
DatePerth (c/L)Rest of Western Australia (c/L)
30 Sept239.0250.9
29 Sept225.9250.3
28 Sept229.9250.6
27 Sept230.2250.6
26 Sept230.8250.6
25 Sept232.8250.7
24 Sept236.9250.1
23 Sept239.8249.6
22 Sept227.0248.1
21 Sept231.2246.6
20 Sept231.6245.7
19 Sept232.0244.9
18 Sept231.3242.5
17 Sept230.6239.2
16 Sept230.8236.5
15 Sept211.4233.3
14 Sept211.9231.5
13 Sept211.7231.1
12 Sept211.0230.5
11 Sept212.5229.4
10 Sept214.8228.1
9 Sept217.0226.9
8 Sept200.4225.6
7 Sept203.0224.7
6 Sept203.7224.4
5 Sept203.5224.3
4 Sept205.7223.9
3 Sept208.2223.8
2 Sept211.2223.9
1 Sept196.0223.4
31 Aug199.2223.6
30 Aug200.8223.7
29 Aug201.2223.7
28 Aug204.6223.8
27 Aug209.0223.9
26 Aug212.0223.9
25 Aug196.7223.1
24 Aug200.0223.1
23 Aug201.3223.0
22 Aug201.4222.6
21 Aug203.3222.4
20 Aug205.3222.1
19 Aug207.3221.6
18 Aug191.2220.1
17 Aug193.3219.5
16 Aug194.0219.5
15 Aug194.4219.5
14 Aug197.0219.4
13 Aug200.7219.6
12 Aug204.5220.2
11 Aug193.0220.1
10 Aug198.4220.9
9 Aug199.7220.9
8 Aug200.9221.0
7 Aug204.8221.3
6 Aug208.2220.7
5 Aug210.7219.2
4 Aug195.7216.3
3 Aug194.8213.5
2 Aug192.3211.2
1 Aug192.6210.9
31 July193.8210.1
30 July195.4209.1
29 July197.2208.0
28 July183.8206.4
27 July185.8204.6
26 July185.3204.1
25 July184.7203.7
24 July183.4202.2
23 July184.1200.8
22 July185.5199.9
21 July169.5198.2
20 July172.5197.5
19 July172.9197.4
18 July172.9197.1
17 July173.7196.2
16 July174.8195.2
15 July175.6194.3
14 July162.2193.6
13 July164.8194.1
12 July165.3194.1
11 July165.4194.1
10 July167.2188.9
9 July170.4189.1
8 July173.3191.6
7 July163.0190.8
6 July165.4191.1
5 July165.9190.9
4 July165.6190.7
3 July164.6190.1
2 July166.4189.4
1 July164.1187.8
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The price cycle in Perth

Perth's U91 price cycle ran in the September quarter 2026: 12 hikes lifted the margin over the terminal gate price by 13.3 c/L on average, with peaks about 7.6 days apart. The largest took the U91 average from 191.2 c/L on 18 August to 207.3 c/L on 19 August, while the terminal gate price rose 0.9 c/L. One other sharp rise came with an excise change, so we do not count it.

Price-cycle hikes under the margin-based rule, September quarter 2026
Fromc/LToc/LRise
7 July163.08 July173.3+10.3
14 July162.215 July175.6+13.4
21 July169.522 July185.5+16.0
28 July183.829 July197.2+13.4
11 August193.012 August204.5+11.5
18 August191.219 August207.3+16.1
25 August196.726 August212.0+15.3
1 September196.02 September211.2+15.2
8 September200.49 September217.0+16.6
15 September211.416 September230.8+19.4
22 September227.023 September239.8+12.8
29 September225.930 September239.0+13.1

Perth’s daily U91 average less the Perth terminal gate price is the indicative margin, not profit. A hike requires this margin and the retail average each to rise by at least 8.0 c/L within 5 days. Where station-rise counts are available, daily rises of at least 5.0 c/L, summed over the rise, must reach 25% of the station count at the peak; a station can count on more than one day. Rises within 3 days of an excise change are excluded. The margin must then ease by at least half within 21 days; if follow-up is too short, a counted hike can have unconfirmed easing. A regular cycle requires at least two detected hikes. No detected hike does not establish why retail prices changed.

Fuel excise

Fuel excise on petrol and diesel changed from 20.6 c/L to 36.6 c/L on 1 July 2026 and from 36.6 c/L to 53.7 c/L on 3 August 2026. Over the period it averaged 47.6 c/L a litre, before GST.

Fuel excise, September quarter 2026
Petrol and diesel exciseRate (c/L, before GST)Change
In force on 1 July 202636.6—
From 1 July 2026Partial restoration; still a temporarily reduced rate, 1 July to 2 August 202636.6+16.0
From 3 August 2026Full rate restored, indexed by the CPI factor of 1.02053.7+17.1
Average over the days of 1 July to 30 September 202647.57—

Excise is charged on fuel as it leaves the terminal, so it is already in the terminal gate price; GST is then charged on top.

Source: ATO: Excise duty rates for fuel and petroleum products

The capital cities, U91

Perth ranked second cheapest of the 8 capital cities for U91; Adelaide was the cheapest at 197.5 c/L and Canberra the dearest at 206.5 c/L. Perth ranked second cheapest of the 8 capital cities for diesel; Adelaide was the cheapest at 233.9 c/L and Canberra the dearest at 248.2 c/L.

Every capital city by average U91 price, September quarter 2026
CapitalQuarter
AdelaideCheapest capital197.5
PerthThis report198.1
Sydney198.2
Melbourne198.6
Brisbane200.0
Hobart204.1
Darwin206.4
CanberraDearest capital206.5

Cents a litre, cheapest first. Each capital is its ABS urban area, worked out exactly as in its own state’s report. The margin is against its own terminal’s gate price (Canberra uses Sydney’s). Period-average margins are omitted here: comparable daily inputs and weights are not retained for these rows.

The capital cities, diesel

Show the capital cities, diesel
Every capital city by average diesel price, September quarter 2026
CapitalQuarter
AdelaideCheapest capital233.9
PerthThis report234.1
Sydney237.0
Melbourne240.5
Brisbane241.2
Darwin244.7
Hobart244.9
CanberraDearest capital248.2

Cents a litre, cheapest first. Each capital is its ABS urban area, worked out exactly as in its own state’s report. The margin is against its own terminal’s gate price (Canberra uses Sydney’s). Period-average margins are omitted here: comparable daily inputs and weights are not retained for these rows.

Perth by area

Inside Perth, Perth South East was the cheapest area for U91 at 197.3 c/L and Mandurah the dearest at 201.1 c/L, a spread of 3.8 c/L.

  1. Perth South East197.3 (lowest)
  2. Perth South West197.9
  3. Perth North East198.0
  4. Perth North West198.5
  5. Perth Inner199.5
  6. Mandurah201.1

Cents a litre, cheapest U91 first. Areas are the ABS Statistical Areas Level 4 (SA4) inside Perth’s urban area, named in plain words (“Brisbane - East” is Brisbane East). An area counts its stations that reported on at least a quarter of the days; its average, station count and cheapest station all come from them. Period-average margins are omitted here: comparable daily inputs and weights are not retained for these rows.

Table view
Perth areas by average price, September quarter 2026
Area (ABS SA4)U91Diesel
Perth South East197.3233.9
Perth South West197.9234.3
Perth North East198.0232.9
Perth North West198.5232.7
Perth Inner199.5238.4
Mandurah201.1241.4

Regional towns cheaper than Perth, U91

Regional towns with a U91 average below Perth’s, September quarter 2026
TownQuarterAgainst Perth
Oakford (rural)185.2−12.9
Gidgegannup (rural)193.1−5.0
Pinjarra193.1−5.0
Anketell196.8−1.3
Bullsbrook196.9−1.2
Busselton197.3−0.8
Narrogin197.3−0.8
Albany197.8−0.3

Cents a litre, cheapest first. Perth’s U91 average was 198.1 c/L. A town’s margin is against Perth’s terminal gate price. Period-average margins are omitted here: comparable daily inputs and weights are not retained for these rows.

Regional towns ranked, U91

Oakford (rural) was the cheapest town we ranked for U91 at 185.2 c/L, 12.9 c/L below Perth. At the other end, Drysdale River (rural) averaged 343.3 c/L, 145.2 c/L above Perth. 8 of the 83 towns we ranked averaged less than Perth for U91. Oakford (rural) was the cheapest regional town for diesel at 220.8 c/L and Drysdale River (rural) the dearest at 351.4 c/L, a spread of 130.6 c/L.

Oakford (rural)185.2▼ −12.9 v PerthGidgegannup (rural)193.1▼ −5.0 v PerthPinjarra193.1▼ −5.0 v PerthAnketell196.8▼ −1.3 v PerthBullsbrook196.9▼ −1.2 v PerthBusselton197.3▼ −0.8 v PerthNarrogin197.3▼ −0.8 v PerthAlbany197.8▼ −0.3 v PerthBunbury198.6▲ +0.5 v PerthKarragullen (rural)199.1▲ +1.0 v PerthNortham200.1▲ +2.0 v PerthDonnybrook200.2▲ +2.1 v PerthGeraldton200.5▲ +2.4 v PerthWilliams200.5▲ +2.4 v PerthManjimup200.8▲ +2.7 v PerthGingin201.1▲ +3.0 v PerthKulin201.3▲ +3.2 v PerthYanchep201.6▲ +3.5 v PerthPort Denison – Dongara202.0▲ +3.9 v PerthBridgetown202.2▲ +4.1 v PerthKalgoorlie–Boulder202.2▲ +4.1 v PerthWest Pinjarra (rural)202.4▲ +4.3 v PerthWaroona202.5▲ +4.4 v PerthCataby (rural)202.7▲ +4.6 v PerthDenmark202.7▲ +4.6 v PerthMoora203.1▲ +5.0 v PerthYork203.1▲ +5.0 v PerthDunsborough203.2▲ +5.1 v PerthMerredin203.4▲ +5.3 v PerthGnowangerup204.3▲ +6.2 v PerthMargaret River204.4▲ +6.3 v PerthMingenew204.6▲ +6.5 v PerthMount Barker204.6▲ +6.5 v PerthToodyay205.0▲ +6.9 v PerthHarvey205.5▲ +7.4 v PerthKalbarri205.8▲ +7.7 v PerthDalwallinu206.1▲ +8.0 v PerthWagin206.1▲ +8.0 v PerthSouthern Cross206.8▲ +8.7 v PerthMeadow (rural)207.9▲ +9.8 v PerthJerramungup208.4▲ +10.3 v PerthKatanning208.6▲ +10.5 v PerthWalpole208.6▲ +10.5 v PerthEsperance208.7▲ +10.6 v PerthHyden (rural)208.7▲ +10.6 v PerthCorrigin210.4▲ +12.3 v PerthCunderdin210.8▲ +12.7 v PerthNewman211.0▲ +12.9 v PerthNorthampton211.1▲ +13.0 v PerthJurien Bay211.7▲ +13.6 v PerthCollie212.2▲ +14.1 v PerthNorthcliffe (rural)212.3▲ +14.2 v PerthMullewa213.4▲ +15.3 v PerthNannup213.7▲ +15.6 v PerthLake Grace214.0▲ +15.9 v PerthDenham214.2▲ +16.1 v PerthBremer Bay214.8▲ +16.7 v PerthHopetoun214.8▲ +16.7 v PerthMorawa215.0▲ +16.9 v PerthMeekatharra216.3▲ +18.2 v PerthKarratha216.4▲ +18.3 v PerthRavensthorpe216.9▲ +18.8 v PerthKununurra219.1▲ +21.0 v PerthBoddington–Ranford219.6▲ +21.5 v PerthLeonora220.0▲ +21.9 v PerthLaverton221.0▲ +22.9 v PerthBrookton221.4▲ +23.3 v PerthQuairading222.8▲ +24.7 v PerthCoolgardie223.8▲ +25.7 v PerthBoyup Brook224.8▲ +26.7 v PerthNorseman225.4▲ +27.3 v PerthCarnarvon226.1▲ +28.0 v PerthWiluna229.8▲ +31.7 v PerthPort Hedland235.1▲ +37.0 v PerthFitzroy Crossing235.4▲ +37.3 v PerthBroome236.5▲ +38.4 v PerthExmouth239.3▲ +41.2 v PerthDerby239.8▲ +41.7 v PerthOnslow249.4▲ +51.3 v PerthHalls Creek253.1▲ +55.0 v PerthDjarindjin–Lombadina280.9▲ +82.8 v PerthWarmun311.6▲ +113.5 v PerthDrysdale River (rural)343.3▲ +145.2 v Perth

Source: FuelRadar (fuelradar.com.au)

Cents a litre, cheapest first. A town is ranked with at least two stations reporting through the period and a price on most days; 188 smaller places were left out. The cheapest station’s figure is its own average over the period.

Table view
Western Australia regional towns by average U91 price, September quarter 2026
TownQuarterAgainst Perth
Oakford (rural)185.2−12.9
Gidgegannup (rural)193.1−5.0
Pinjarra193.1−5.0
Anketell196.8−1.3
Bullsbrook196.9−1.2
Busselton197.3−0.8
Narrogin197.3−0.8
Albany197.8−0.3
Bunbury198.6+0.5
Karragullen (rural)199.1+1.0
Northam200.1+2.0
Donnybrook200.2+2.1
Geraldton200.5+2.4
Williams200.5+2.4
Manjimup200.8+2.7
Gingin201.1+3.0
Kulin201.3+3.2
Yanchep201.6+3.5
Port Denison – Dongara202.0+3.9
Bridgetown202.2+4.1
Kalgoorlie–Boulder202.2+4.1
West Pinjarra (rural)202.4+4.3
Waroona202.5+4.4
Cataby (rural)202.7+4.6
Denmark202.7+4.6
Moora203.1+5.0
York203.1+5.0
Dunsborough203.2+5.1
Merredin203.4+5.3
Gnowangerup204.3+6.2
Margaret River204.4+6.3
Mingenew204.6+6.5
Mount Barker204.6+6.5
Toodyay205.0+6.9
Harvey205.5+7.4
Kalbarri205.8+7.7
Dalwallinu206.1+8.0
Wagin206.1+8.0
Southern Cross206.8+8.7
Meadow (rural)207.9+9.8
Jerramungup208.4+10.3
Katanning208.6+10.5
Walpole208.6+10.5
Esperance208.7+10.6
Hyden (rural)208.7+10.6
Corrigin210.4+12.3
Cunderdin210.8+12.7
Newman211.0+12.9
Northampton211.1+13.0
Jurien Bay211.7+13.6
Collie212.2+14.1
Northcliffe (rural)212.3+14.2
Mullewa213.4+15.3
Nannup213.7+15.6
Lake Grace214.0+15.9
Denham214.2+16.1
Bremer Bay214.8+16.7
Hopetoun214.8+16.7
Morawa215.0+16.9
Meekatharra216.3+18.2
Karratha216.4+18.3
Ravensthorpe216.9+18.8
Kununurra219.1+21.0
Boddington–Ranford219.6+21.5
Leonora220.0+21.9
Laverton221.0+22.9
Brookton221.4+23.3
Quairading222.8+24.7
Coolgardie223.8+25.7
Boyup Brook224.8+26.7
Norseman225.4+27.3
Carnarvon226.1+28.0
Wiluna229.8+31.7
Port Hedland235.1+37.0
Fitzroy Crossing235.4+37.3
Broome236.5+38.4
Exmouth239.3+41.2
Derby239.8+41.7
Onslow249.4+51.3
Halls Creek253.1+55.0
Djarindjin–Lombadina280.9+82.8
Warmun311.6+113.5
Drysdale River (rural)343.3+145.2

Regional towns ranked, diesel

Oakford (rural)220.8▼ −13.3 v PerthNarrogin222.2▼ −11.9 v PerthPinjarra229.6▼ −4.5 v PerthBusselton232.0▼ −2.1 v PerthBunbury232.4▼ −1.7 v PerthGidgegannup (rural)232.6▼ −1.5 v PerthKarragullen (rural)232.6▼ −1.5 v PerthAlbany233.0▼ −1.1 v PerthDonnybrook233.2▼ −0.9 v PerthMuchea (rural)234.4▲ +0.3 v PerthGeraldton234.8▲ +0.7 v PerthWaroona235.2▲ +1.1 v PerthMerredin235.3▲ +1.2 v PerthWilliams235.3▲ +1.2 v PerthKulin235.5▲ +1.4 v PerthManjimup235.8▲ +1.7 v PerthCataby (rural)235.9▲ +1.8 v PerthDenmark236.7▲ +2.6 v PerthBullsbrook237.0▲ +2.9 v PerthGnowangerup237.2▲ +3.1 v PerthPort Denison – Dongara237.3▲ +3.2 v PerthCunderdin237.6▲ +3.5 v PerthAnketell237.7▲ +3.6 v PerthNortham238.0▲ +3.9 v PerthBridgetown238.1▲ +4.0 v PerthMukinbudin238.2▲ +4.1 v PerthKalgoorlie–Boulder238.3▲ +4.2 v PerthGingin238.4▲ +4.3 v PerthYork238.8▲ +4.7 v PerthMingenew239.3▲ +5.2 v PerthMargaret River239.7▲ +5.6 v PerthWalpole239.9▲ +5.8 v PerthKalbarri240.7▲ +6.6 v PerthJerramungup240.8▲ +6.7 v PerthEsperance241.1▲ +7.0 v PerthToodyay241.2▲ +7.1 v PerthDunsborough241.4▲ +7.3 v PerthHyden (rural)241.6▲ +7.5 v PerthMount Barker241.7▲ +7.6 v PerthCorrigin243.5▲ +9.4 v PerthKatanning243.5▲ +9.4 v PerthKojonup243.5▲ +9.4 v PerthMeadow (rural)244.0▲ +9.9 v PerthNorthampton245.3▲ +11.2 v PerthSouthern Cross245.5▲ +11.4 v PerthMullewa246.2▲ +12.1 v PerthMorawa246.5▲ +12.4 v PerthHopetoun246.8▲ +12.7 v PerthLake Grace247.2▲ +13.1 v PerthKarratha247.5▲ +13.4 v PerthCollie247.7▲ +13.6 v PerthNorthcliffe (rural)247.7▲ +13.6 v PerthKununurra (rural)248.2▲ +14.1 v PerthRavensthorpe249.3▲ +15.2 v PerthBoddington–Ranford249.5▲ +15.4 v PerthBrookton249.7▲ +15.6 v PerthNannup249.7▲ +15.6 v PerthCue249.9▲ +15.8 v PerthWest Pinjarra (rural)250.0▲ +15.9 v PerthKununurra250.5▲ +16.4 v PerthCoolgardie251.9▲ +17.8 v PerthCarnarvon252.2▲ +18.1 v PerthDenham252.4▲ +18.3 v PerthPort Hedland253.5▲ +19.4 v PerthBremer Bay254.3▲ +20.2 v PerthQuairading255.0▲ +20.9 v PerthLeonora255.6▲ +21.5 v PerthBroome255.9▲ +21.8 v PerthBoyup Brook258.5▲ +24.4 v PerthNewman258.9▲ +24.8 v PerthNorseman262.9▲ +28.8 v PerthMeekatharra266.4▲ +32.3 v PerthDerby268.1▲ +34.0 v PerthHalls Creek269.1▲ +35.0 v PerthLaverton270.0▲ +35.9 v PerthFitzroy Crossing271.9▲ +37.8 v PerthExmouth273.0▲ +38.9 v PerthWiluna286.0▲ +51.9 v PerthDjarindjin–Lombadina288.8▲ +54.7 v PerthOnslow302.4▲ +68.3 v PerthWarmun337.0▲ +102.9 v PerthDrysdale River (rural)351.4▲ +117.3 v Perth

Source: FuelRadar (fuelradar.com.au)

Cents a litre, cheapest first. A town is ranked with at least two stations reporting through the period and a price on most days; 184 smaller places were left out. The cheapest station’s figure is its own average over the period.

Table view
Western Australia regional towns by average diesel price, September quarter 2026
TownQuarterAgainst Perth
Oakford (rural)220.8−13.3
Narrogin222.2−11.9
Pinjarra229.6−4.5
Busselton232.0−2.1
Bunbury232.4−1.7
Gidgegannup (rural)232.6−1.5
Karragullen (rural)232.6−1.5
Albany233.0−1.1
Donnybrook233.2−0.9
Muchea (rural)234.4+0.3
Geraldton234.8+0.7
Waroona235.2+1.1
Merredin235.3+1.2
Williams235.3+1.2
Kulin235.5+1.4
Manjimup235.8+1.7
Cataby (rural)235.9+1.8
Denmark236.7+2.6
Bullsbrook237.0+2.9
Gnowangerup237.2+3.1
Port Denison – Dongara237.3+3.2
Cunderdin237.6+3.5
Anketell237.7+3.6
Northam238.0+3.9
Bridgetown238.1+4.0
Mukinbudin238.2+4.1
Kalgoorlie–Boulder238.3+4.2
Gingin238.4+4.3
York238.8+4.7
Mingenew239.3+5.2
Margaret River239.7+5.6
Walpole239.9+5.8
Kalbarri240.7+6.6
Jerramungup240.8+6.7
Esperance241.1+7.0
Toodyay241.2+7.1
Dunsborough241.4+7.3
Hyden (rural)241.6+7.5
Mount Barker241.7+7.6
Corrigin243.5+9.4
Katanning243.5+9.4
Kojonup243.5+9.4
Meadow (rural)244.0+9.9
Northampton245.3+11.2
Southern Cross245.5+11.4
Mullewa246.2+12.1
Morawa246.5+12.4
Hopetoun246.8+12.7
Lake Grace247.2+13.1
Karratha247.5+13.4
Collie247.7+13.6
Northcliffe (rural)247.7+13.6
Kununurra (rural)248.2+14.1
Ravensthorpe249.3+15.2
Boddington–Ranford249.5+15.4
Brookton249.7+15.6
Nannup249.7+15.6
Cue249.9+15.8
West Pinjarra (rural)250.0+15.9
Kununurra250.5+16.4
Coolgardie251.9+17.8
Carnarvon252.2+18.1
Denham252.4+18.3
Port Hedland253.5+19.4
Bremer Bay254.3+20.2
Quairading255.0+20.9
Leonora255.6+21.5
Broome255.9+21.8
Boyup Brook258.5+24.4
Newman258.9+24.8
Norseman262.9+28.8
Meekatharra266.4+32.3
Derby268.1+34.0
Halls Creek269.1+35.0
Laverton270.0+35.9
Fitzroy Crossing271.9+37.8
Exmouth273.0+38.9
Wiluna286.0+51.9
Djarindjin–Lombadina288.8+54.7
Onslow302.4+68.3
Warmun337.0+102.9
Drysdale River (rural)351.4+117.3

Other fuels: cheapest and dearest towns

Cheapest and dearest towns for the other fuels, September quarter 2026
FuelCheapest town (c/L)Dearest town (c/L)
Premium 95Oakford (rural) 199.8Onslow 258.9
Premium 98Oakford (rural) 211.0Port Hedland 258.8

Fewer stations sell these fuels, so fewer towns are ranked.

Regional centres, U91

Busselton was the cheapest of the 10 regional centres we ranked for U91 at 197.3 c/L, and Broome the dearest at 236.5 c/L. Two of them averaged less than Perth.

Regional centres ranked by their U91 average, September quarter 2026
CentreQuarterAgainst Perth
Busselton197.3−0.8
Albany197.8−0.3
Bunbury198.6+0.5
Geraldton200.5+2.4
Yanchep201.6+3.5
Kalgoorlie–Boulder202.2+4.1
Esperance208.7+10.6
Karratha216.4+18.3
Port Hedland235.1+37.0
Broome236.5+38.4

Cents a litre, cheapest first. A regional centre is a large regional city we map on its own, or an ABS urban centre of 10,000 people or more (2021 Census) outside Perth.

Against Perth, month by month, U91

Perth South East averaged 197.3 c/L for U91, 0.8 c/L below Perth, and was cheaper than Perth in 6 of 6 months since our records began on 13 April 2026. Perth South West averaged 197.9 c/L for U91, 0.2 c/L below Perth, and was cheaper than Perth in 5 of 6 months since our records began on 13 April 2026. Perth North East averaged 198.0 c/L for U91, 0.1 c/L below Perth, and was cheaper than Perth in 5 of 6 months since our records began on 13 April 2026. Perth North West averaged 198.5 c/L for U91, 0.4 c/L above Perth, and was cheaper than Perth in 0 of 6 months since our records began on 13 April 2026.

Each area’s U91 average against Perth’s: the September quarter 2026, since our records began on 13 April 2026, and each month
AreaQuarterAgainst PerthYear so farMonths cheaper
Perth South East197.3−0.8−0.96 of 6
Perth South West197.9−0.2−0.15 of 6
Perth North East198.0−0.1−0.15 of 6
Perth North West198.5+0.4+0.40 of 6
Perth Inner199.5+1.4+1.40 of 6
Mandurah201.1+3.0+2.60 of 6
BunburyRegional centre198.6+0.5+2.71 of 6

Cents a litre; negative is cheaper than Perth. The areas are Perth’s ABS SA4 areas and the regional centres of 50,000 people or more.

Cheapest and dearest in each area, U91

Pinjarra was the cheapest town in Mandurah for U91 at 193.1 c/L and West Pinjarra (rural) the dearest at 202.4 c/L. Gidgegannup (rural) was the cheapest place outside a town in Perth North East for U91 at 193.1 c/L and Bullsbrook the dearest at 196.9 c/L. Oakford (rural) was the cheapest place outside a town in Perth South East for U91 at 185.2 c/L and Karragullen (rural) the dearest at 199.1 c/L. Of the suburbs and towns we ranked, the widest spread was in Outback Western Australia (North): Newman at 211.0 c/L to Gibson Desert North at 373.3 c/L, a gap of 162.3 c/L.

The cheapest and dearest suburb or town in each ABS SA4 area, September quarter 2026
AreaCheapest suburb or town
MandurahPerth areaPinjarra189.2 c/L
Perth InnerPerth areaMount Lawley194.5 c/L
Perth North EastPerth areaBassendean191.8 c/L
Perth North WestPerth areaLandsdale191.4 c/L
Perth South EastPerth areaOakford185.2 c/L
Perth South WestPerth areaKwinana Beach190.5 c/L
BunburyBroadwater190.1 c/L
Outback Western Australia (North)Newman211.0 c/L
Outback Western Australia (South)Kalgoorlie198.9 c/L
Western Australia – Wheat BeltMount Melville194.2 c/L

A suburb or town is the ABS locality a station sits in, ranked within its SA4 by the same rule as the towns.

The year so far: since our records began on 13 April 2026

Since our records began on 13 April 2026, U91 has averaged 199.3 c/L across Western Australia and 187.6 c/L in Perth; Oakford (rural) has been the cheapest town at 174.3 c/L, and 5 of the 83 towns we ranked have averaged less than Perth.

Averages over every station-day since our records began on 13 April 2026
FuelWestern AustraliaPerthRest of Western Australia
U91199.3187.6210.8
Diesel242.5227.6249.8

5 of the 83 towns we ranked averaged less than Perth for U91.

Cheapest towns since our records began on 13 April 2026, U91

Cheapest towns since our records began on 13 April 2026, U91
TownAverageAgainst Perth
Oakford (rural)174.3−13.3
Anketell184.8−2.8
Bullsbrook184.9−2.7
Pinjarra185.0−2.6
Gidgegannup (rural)186.1−1.5
Busselton188.9+1.3
Albany189.8+2.2
Bunbury190.3+2.7
Northam191.7+4.1
West Pinjarra (rural)191.8+4.2

Dearest towns since our records began on 13 April 2026, U91

Dearest towns since our records began on 13 April 2026, U91
TownAverageAgainst Perth
Drysdale River (rural)345.2+157.6
Warmun316.0+128.4
Djarindjin–Lombadina280.3+92.7
Onslow246.8+59.2
Halls Creek244.0+56.4
Exmouth232.9+45.3
Derby230.2+42.6
Broome228.5+40.9
Fitzroy Crossing227.3+39.7
Wiluna225.3+37.7

The day of the week to buy U91

In the September quarter 2026, Tuesday was the cheapest day to buy U91 in Perth and Wednesday the dearest, 13.8 c/L apart on average; since our records began on 13 April 2026, Tuesday has been the cheapest. In the September quarter 2026, Monday was the cheapest day to buy U91 in Geraldton and Wednesday the dearest, 1.0 c/L apart on average; since our records began on 13 April 2026, Tuesday has been the cheapest. In the September quarter 2026, Monday was the cheapest day to buy U91 in Kalgoorlie–Boulder and Friday the dearest, 1.3 c/L apart on average; since our records began on 13 April 2026, Monday has been the cheapest. In the September quarter 2026, Monday was the cheapest day to buy U91 in Esperance and Saturday the dearest, 1.2 c/L apart on average; since our records began on 13 April 2026, Monday has been the cheapest.

The cheapest and dearest day of the week, and how far apart they were on average
PlaceCheapest / dearest, quarter
PerthTuesday / Wednesday13.8 c/L apart
BunburyRegional centreMonday / Friday0.4 c/L apart
AlbanyRegional centreMonday / Saturday0.5 c/L apart
BusseltonRegional centreMonday / Saturday0.5 c/L apart
GeraldtonRegional centreMonday / Wednesday1.0 c/L apart
Kalgoorlie–BoulderRegional centreMonday / Friday1.3 c/L apart
BroomeRegional centreMonday / Friday0.8 c/L apart
EsperanceRegional centreMonday / Saturday1.2 c/L apart
KarrathaRegional centreMonday / Saturday0.5 c/L apart
Port HedlandRegional centreMonday / Saturday0.8 c/L apart

Each day’s average against the seven days centred on it, averaged by weekday, so a steady rise or fall does not favour one end of the week. A place needs four of each weekday with prices from five stations or more; a month usually shows the year so far only.

What a 60-litre tank of U91 saved

Filling a 60-litre tank with U91 in Oakford (rural) rather than Drysdale River (rural) saved $94.86 on average in the September quarter 2026. In Oakford (rural) the same tank cost $7.74 less than in Perth. At Atlas Fuel Narrogin in Narrogin, the cheapest station we ranked, it cost $18.72 less than at the state average.

Differences of the published averages, September quarter 2026
ComparisonCheaperDearerA tank
Cheapest and dearest townOakford (rural)185.2 c/LDrysdale River (rural)343.3 c/L$94.86
Cheapest and dearest regional centreBusselton197.3 c/LBroome236.5 c/L$23.52
Cheapest town and PerthOakford (rural)185.2 c/LPerth198.1 c/L$7.74
Cheapest station and the state averageAtlas Fuel Narrogin177.5 c/LWestern Australia208.7 c/L$18.72

Towns that moved most on the partial June quarter 2026, U91

Harvey rose most on the partial June quarter 2026, up 27.0 c/L to 205.5 c/L, while Warmun fell most, down 12.5 c/L to 311.6 c/L.

Towns that moved most on the partial June quarter 2026, U91
TownQuarterChange
HarveyRose205.5+27.0
BullsbrookRose196.9+26.2
AnketellRose196.8+26.0
YanchepRose201.6+24.2
Oakford (rural)Rose185.2+23.6
WarmunFell311.6−12.5
RavensthorpeFell216.9−1.5
HopetounFell214.8−0.1

Independents and the major brands, U91

Independent service stations averaged 209.6 c/L for U91 and the major brands 208.3 c/L, 1.3 c/L more at the independents; in Perth the gap was 8.6 c/L. Of the brands with five stations or more, Burk averaged least at 189.9 c/L and Mogas most at 310.4 c/L.

Station-day averages, September quarter 2026
WhereMajor brandsIndependentsDifference
Western Australia208.3209.6+1.3
Perth199.9191.3−8.6
BurkIndependent—189.9—
AtlasIndependent—192.5—
MetroIndependent—193.0—
VibeIndependent—193.8—
UnitedMajor brand197.8——
7-ElevenMajor brand199.1——
AstronIndependent—201.3—
PetrogasIndependent—201.9—
CaltexMajor brand202.2——
LibertyIndependent—203.0—
EagleIndependent—203.1—
Reddy ExpressMajor brand203.5——
ChoiceIndependent—204.3—
ShellMajor brand206.0——
AmpolMajor brand208.0——
BPMajor brand218.5——
IndependentIndependent—234.9—
MogasIndependent—310.4—

The major brands are 7-Eleven, Ampol, BP, Caltex, EG, Mobil, On The Run (OTR), Reddy Express, Shell and United; every other brand, and a station without one, is independent. Stations with a price on a quarter of the days; a brand is listed with five or more.

Cheapest service stations, U91

Atlas Fuel Narrogin in Narrogin was the cheapest service station we ranked for U91 at 177.5 c/L, and Kunawarritji Store in Gibson Desert North the dearest at 447.4 c/L.

931 stations with a price on half the days or more, September quarter 2026
StationPlaceAverage
Atlas Fuel NarroginAtlasNarrogin177.5
Costco CasuarinaCostcoCasuarina180.6
Costco Perth AirportCostcoPerth Airport180.9
AMPM HighwayFuelTechMount Melville184.5
Burk OakfordBurkOakford184.8
Vibe Oakford TruckstopVibeOakford185.6
Burk LandsdaleBurkLandsdale185.8
Vibe Kwinana OPTVibeKwinana Beach185.9
Burk CanningtonBurkBeckenham186.4
Atlas Fuel KwinanaAtlasKwinana Beach186.7

Dearest service stations, U91

931 stations with a price on half the days or more, September quarter 2026
StationPlaceAverage
Kunawarritji StoreIndependentGibson Desert North447.4
Yakanarra Community StoreIndependentSt George Ranges410.0
Kalumburu MissionBPDrysdale River375.0
Jameson StoreBP—360.6
Kururrungku Community StoreIndependentSturt Creek360.0
Wingellina StoreBPWingellina356.2
Warburton RoadhouseBPWarburton356.2
Warakurna RoadhouseBPNgaanyatjarra-Giles356.2
Wanarn StoreBP—356.2
Tjukurla StoreBPTjukurla356.2

Diesel against U91

Diesel cost 36.0 c/L more than U91 in Perth, against 44.5 c/L on the partial June quarter 2026. Among the towns, the gap was narrowest in Djarindjin–Lombadina at 7.9 c/L and widest in Wiluna at 56.2 c/L.

How much more diesel cost than U91, September quarter 2026
WhereDiesel less U91
Perth36.0
Western Australia38.7
Rest of Western Australia35.0
Djarindjin–LombadinaNarrowest gap7.9
Drysdale River (rural)Narrowest gap8.1
Halls CreekNarrowest gap16.0
Port HedlandNarrowest gap18.4
BroomeNarrowest gap19.4
WilunaWidest gap56.2
OnslowWidest gap53.0
MeekatharraWidest gap50.1
LavertonWidest gap49.0
NewmanWidest gap47.9

Crude oil and the dollar

Brent crude averaged US$96.3 a barrel in the September quarter 2026, against US$63.7 in the December quarter 2025.

Brent crude oil and the Australian dollar, September quarter 2026 and the periods before
PeriodBrent, US$ a barrelUS$ per A$Brent, A$ c/L
September quarter 202696.30.706286.0
June quarter 2026102.60.710191.1
March quarter 202680.70.695673.3
December quarter 202563.70.656861.0

Brent: Europe Brent spot price FOB (US Energy Information Administration). Exchange rate: the Federal Reserve’s noon buying rate in New York. Both via FRED, Federal Reserve Bank of St. Louis, averaged over the days each is published; the Australian-dollar figures use each day’s rate. A litre is a barrel divided by 158.987. We use these free benchmarks because the refined-petrol and diesel benchmarks Australian wholesale prices follow (Singapore) are sold by subscription.

Data quality, method and sources

We counted 969 distinct stations with eligible input prices, including carried prices, over 261,766 station–fuel–days across published fuels. Our price records begin on 13 April 2026.

What the figures cover, September quarter 2026
CoverageFigure
Service stations listed970
Stations with an eligible input price969
Station–fuel–days counted (published fuels)261,766
Days covered1 July 2026 to 30 September 2026
Station-price records used here begin13 April 2026
Towns ranked for U91188 left out: too few steady stations83

Coverage by fuel and period

The listed count is the inventory used at build time, not a historical census of every operating station. One station selling two fuels on one day contributes two station–fuel–days. Fuel-specific counts must not be added to obtain a distinct station total.
Fuel and periodDistinct stationsStation–fuel–daysCalendar days
U91, September quarter 20261 Jul to 30 Sept 202693284,98892
U91, June quarter 202613 Apr to 30 Jun 202689964,01979
DSL, September quarter 20261 Jul to 30 Sept 202666259,57092
DSL, June quarter 202613 Apr to 30 Jun 202660441,49679
P95, September quarter 20261 Jul to 30 Sept 202652647,77992
P95, June quarter 202613 Apr to 30 Jun 202651339,03779
P98, September quarter 20261 Jul to 30 Sept 202672666,08392
P98, June quarter 202613 Apr to 30 Jun 202670352,28279
LPG, September quarter 20261 Jul to 30 Sept 2026373,34692
LPG, June quarter 202613 Apr to 30 Jun 2026301,32279

The listed count is the inventory used at build time, not a historical census of every operating station. One station selling two fuels on one day contributes two station–fuel–days. Fuel-specific counts must not be added to obtain a distinct station total. Distinct stations contributing eligible prices for this fuel and period. Calendar days describe the window, not new observations.

About this edition

How we worked out these figures, and our sources · What this edition can establish

How we worked out these figures, and our sources

  1. What the average measures

    Reported station-day prices, not purchases. Each station counts once per day with an eligible price; stations with more covered days contribute more. The mean is not weighted by litres sold and does not measure what the average driver paid.

  2. Which history this uses

    This report's station-price records begin on 13 April 2026. The separately published daily city-average series can begin earlier and use different boundaries and carry rules. Compare figures within the same series.

  3. Coverage and carry

    Perth uses its ABS urban area. An eligible price can be carried forward for up to 30 days. A covered day can therefore contain an earlier reported price. Station-days are observations, not distinct stations. The report does not quantify the share of carried prices or all excluded reports.

  4. Wholesale spreads

    Retail less terminal gate price is a gross indicative spread, not profit. It also covers transport, site and operating costs. Brent is a crude-oil benchmark, not a refined petrol or diesel price.

  5. How we average

    Each day, every service station counts once at its latest price as of the end of that day. A price is carried forward for at most 30 days, and the average is taken over every station-day in the period, so a station that reported all period counts more than one that reported for a week.

  6. Towns and areas

    Perth is its ABS urban area, split into ABS SA4 areas. Outside it, a town is the locality a station sits in; a station in another large city counts in that city as one place.

  7. Which prices count

    Prices held for checking, prices a station reported as unavailable and implausible prices are left out. A station’s next report ends its previous price.

  8. Coverage

    969 stations had an eligible input price in the period, including carried prices.

  9. Wholesale, margins and the cost of a litre

    The terminal gate price is AIP’s weekday price at the Perth terminal; AIP publishes the capital-city terminals only. Weekday prices are carried over weekends, and a period’s price is the mean of its calendar days. The margin is the retail average less the terminal gate price. In the cost of a litre, crude oil is Brent in Australian dollars, wholesale is the terminal gate price without GST and excise less crude oil, excise is the ATO rate averaged over the days, GST is one eleventh of the retail price, and the retail difference is the rest.

  10. Sources

    FuelRadar: station-day averages, areas and the price cycle, from the prices service stations report to their state’s price service. Australian Institute of Petroleum: terminal gate prices. US Energy Information Administration, via FRED: Brent crude. Federal Reserve, via FRED: the exchange rate. Australian Taxation Office: excise rates. Australian Bureau of Statistics: the urban area, SA4 and locality boundaries.

  11. About these prices

    These are averages over the whole period, not today’s prices. Check the station price and its update time before you fill.

What this edition can establish

  1. Not recorded

    Carried retail price counts and excluded raw report counts were not retained; their shares are unavailable. The number of stations selling each fuel and litres sold are not recorded, so fuel-market and sales coverage percentages are unavailable.

  2. Saved edition

    Saved 15 October 2026 at 9:39 pm, method version 2, PDF publication 7. The fingerprint identifies the saved data, not editorial changes. The PDF publication number does not supply a retained revision history.

  3. Data fingerprint

    27645a93856a1cf2a9012ade89bbb11591d8508a6a170379ae86200b685e3eae

For media

  1. In short

    Perth reported prices averaged 198.1 c/L for U91 in the September quarter 2026, up 23.0 c/L on the partial June quarter 2026. Pinjarra was the cheapest town in Mandurah for U91 in the September quarter 2026 at 193.1 c/L, 5.0 c/L below Perth.

  2. Credit line

    Source: FuelRadar Australia, Western Australia fuel prices, September quarter 2026, fuelradar.com.au/fuel-price-reports/wa/2026-q3

  3. Media enquiries

    Email [email protected]. Figures, graphics and the PDF are free to use in news coverage with the credit line.