Name: Western Australia fuel prices, September 2026
Creator: FuelRadar Australia
License: https://fuelradar.com.au/terms-and-conditions

Report highlights

Quote these with the credit: Source: FuelRadar Australia, Western Australia fuel prices, September 2026, fuelradar.com.au/fuel-price-reports/wa/2026-09

Perth reported prices averaged 220.1 c/L for U91 in September 2026, up 19.8 c/L on August 2026.
Pinjarra was the cheapest town in Mandurah for U91 in September 2026 at 213.9 c/L, 6.2 c/L below Perth.
Bunbury averaged 217.8 c/L for U91 in September 2026, 2.3 c/L below Perth, and was cheaper than Perth in 1 of 6 months since our records began on 13 April 2026.
Since our records began on 13 April 2026, Tuesday has been the cheapest day to buy U91 in Perth and Wednesday the dearest, 12.6 c/L apart on average: $7.56 on a 60-litre tank.
Filling a 60-litre tank with U91 in Oakford (rural) rather than in Drysdale River (rural) saved $87.90 on average in September 2026.
Diesel cost 42.8 c/L more than U91 in Perth in September 2026, up from 40.9 c/L in August 2026.
Oakford (rural) was Western Australia’s cheapest town for U91 in September 2026 at 208.2 c/L, 11.9 c/L below Perth.
Perth was the second cheapest of the 8 capital cities for U91 in September 2026 at 220.1 c/L.

Key points

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

Unleaded wholesale prices in Perth averaged 214.8 c/L, making September 2026 the dearest of the 121 months in ten years since AIP's series began in January 2004 (nominal prices).
On 23 September 2026, Perth U91 hit 239.8 c/L, setting a record daily high average since our records began on 13 April 2026.
Perth was the second cheapest of the 8 capital cities for U91 in September 2026, behind Adelaide which was the cheapest of the 8 capital cities at 218.8 c/L.
For diesel drivers, Perth was the cheapest of the 8 capital cities in September 2026 with an average of 262.9 c/L.
In Perth, U91 prices moved through 5 hikes in September 2026, with an average rise of 15.4 c/L.
Since our records began on 13 April 2026, Tuesday has been the cheapest day to fill up with U91 in Perth and Wednesday the dearest, separated by 12.6 c/L on average.
Oakford (rural) was Western Australia’s cheapest town for U91 in September 2026 at 208.2 c/L, sitting 11.9 c/L below Perth.
Drysdale River (rural) recorded the state's highest average for U91 at 354.7 c/L in September 2026.
Choosing to fill a 60-litre tank with U91 in Oakford (rural) instead of Drysdale River (rural) saved $87.90 on average.
Diesel in Perth averaged 42.8 c/L more than U91 in September 2026.
Albany was the cheapest regional centre for U91, averaging 216.9 c/L in September 2026 to stay 3.2 c/L below Perth.
Between 1 July 2026 and 30 September 2026, U91 in Perth went up by 74.9 c/L.

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Every fuel in Western Australia

U91 reported prices in Perth averaged 220.1 c/L in September 2026, up 19.8 c/L on August 2026. Across Western Australia, U91 averaged 229.0 c/L, up 18.1 c/L on August 2026. Diesel reported prices in Perth averaged 262.9 c/L in September 2026, up 21.7 c/L on August 2026. Across Western Australia, diesel averaged 273.0 c/L, up 19.1 c/L on August 2026. The other fuels averaged P95 238.3 c/L, P98 247.3 c/L and LPG 162.5 c/L.

Source: FuelRadar (fuelradar.com.au)

Cents a litre. Change is on August 2026. Difference is the rest of the state against Perth.

Table viewwith the state average, change and stations

Average price by fuel, September 2026
Fuel	Western Australia	Change	Perth	Rest of state	Difference	Stations
Unleaded 91	229.0	+18.1	220.1	237.1	+17.0	929
Diesel	273.0	+19.1	262.9	277.5	+14.6	655
Premium 95	238.3	+19.0	236.4	243.0	+6.6	521
Premium 98	247.3	+18.6	245.4	250.2	+4.8	719
LPG	162.5	+0.9	157.2	185.0	+27.8	37

What makes up a litre in Perth

Of the 220.1 c/L U91 average in Perth, crude oil was 101.4 c/L, wholesale 40.2 c/L, excise 53.7 c/L, GST 20.0 c/L and the retail difference 4.8 c/L. Of the 262.9 c/L diesel average in Perth, crude oil was 101.4 c/L, wholesale 72.4 c/L, excise 53.7 c/L, GST 23.9 c/L and the retail difference 11.5 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

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 (4 rows)

What makes up a litre of Unleaded 91, c/L
Period	Crude oil (Brent, A$)	Wholesale: refining, shipping, terminal	Excise	GST	Retail difference	Retail price	Terminal gate price
September 2026Dearest since our records began	101.4	40.2	53.7	20.0	4.8	220.1	214.8
August 2026	80.7	43.2	52.6	18.2	5.6	200.3	194.2
2025 averageWholesale side only	67.5	29.0	51.1	—	—	—	162.4
Cheapest: June 2026	76.6	44.3	20.6	14.7	5.1	161.3	155.6

Month by month, U91

Perth's daily U91 average went from 196.0 c/L on 1 September to 239.0 c/L on 30 September, and diesel from 245.1 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.

U91 average by month, September 2026
Area	Sep	Month
Western Australia	229.0	229.0
Perth	220.1	220.1
Rest of Western Australia	237.1	237.1
Perth South EastArea	219.2	219.2
Perth South WestArea	219.4	219.4
Perth North EastArea	220.0	220.0
Perth North WestArea	220.5	220.5
Perth InnerArea	221.7	221.7
MandurahArea	223.4	223.4

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 month.

Month by month, diesel

Show diesel month by month

Diesel average by month, September 2026
Area	Sep	Month
Western Australia	273.0	273.0
Perth	262.9	262.9
Rest of Western Australia	277.5	277.5
Perth North EastArea	260.1	260.1
Perth North WestArea	262.7	262.7
Perth South EastArea	262.7	262.7
Perth South WestArea	262.7	262.7
Perth InnerArea	268.5	268.5
MandurahArea	273.4	273.4

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 month.

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.
Period	Days used / window	Retail daily mean	TGP, same days	Gross spread
September 20261 to 30 Sept 2026; 8 carried TGP days. Gaps may occur within this range.	30 / 30	220.1	214.8	5.2
August 20261 to 31 Aug 2026; 10 carried TGP days. Gaps may occur within this range.	31 / 31	200.3	194.2	6.0

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.
Period	Days used / window	Retail daily mean	TGP, same days	Gross spread
September 20261 to 30 Sept 2026; 8 carried TGP days. Gaps may occur within this range.	30 / 30	262.9	250.2	12.7
August 20261 to 31 Aug 2026; 10 carried TGP days. Gaps may occur within this range.	31 / 31	241.2	233.7	7.5

Worked out the same way as the table above.

Market trends this year

The Perth terminal gate price averaged 214.8 c/L for unleaded and 250.2 c/L for diesel, up 20.6 c/L and up 16.5 c/L on August 2026. Brent crude averaged US$114.2 a barrel, or 101.4 c/L in Australian dollars, with the Australian dollar at an average of 71.15 US cents.

Retail, terminal gate and crude oil prices this year

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
Date	U91, Perth	Diesel, Perth	Unleaded terminal gate price	Diesel terminal gate price	Brent crude, A$ c/L
30 Sept	239.0	275.5	228.7	257.2	104.9
29 Sept	225.9	276.4	228.3	258.3	102.7
28 Sept	229.9	278.0	228.2	259.4	107.5
27 Sept	230.2	278.2	—	—	—
26 Sept	230.8	278.2	—	—	—
25 Sept	232.8	280.0	228.4	261.9	103.8
24 Sept	236.9	281.7	229.1	265.2	108.4
23 Sept	239.8	281.4	229.2	268.5	105.0
22 Sept	227.0	280.5	228.1	269.6	101.8
21 Sept	231.2	278.9	227.1	268.9	102.6
20 Sept	231.6	277.8	—	—	—
19 Sept	232.0	275.5	—	—	—
18 Sept	231.3	271.2	223.9	264.3	105.8
17 Sept	230.6	266.6	220.8	258.6	107.1
16 Sept	230.8	261.8	217.9	253.7	112.7
15 Sept	211.4	257.2	213.3	247.0	115.4
14 Sept	211.9	255.9	211.2	244.3	106.8
13 Sept	211.7	255.5	—	—	—
12 Sept	211.0	254.2	—	—	—
11 Sept	212.5	252.0	209.4	243.8	103.5
10 Sept	214.8	250.2	207.4	242.4	106.1
9 Sept	217.0	249.4	204.9	240.5	95.4
8 Sept	200.4	248.6	202.5	237.9	92.5
7 Sept	203.0	247.9	200.9	235.9	—
6 Sept	203.7	247.5	—	—	—
5 Sept	203.5	246.5	—	—	—
4 Sept	205.7	245.2	198.5	232.4	89.2
3 Sept	208.2	245.1	196.4	230.0	87.8
2 Sept	211.2	245.2	195.4	229.5	85.6
1 Sept	196.0	245.1	194.7	231.1	84.3
31 Aug	199.2	246.3	195.3	233.8	—
30 Aug	200.8	246.5	—	—	—
29 Aug	201.2	246.5	—	—	—
28 Aug	204.6	246.7	195.5	235.1	78.8
27 Aug	209.0	246.4	196.6	238.5	78.8
26 Aug	212.0	246.0	196.8	239.5	77.0
25 Aug	196.7	246.0	196.7	239.4	77.5
24 Aug	200.0	245.8	196.4	239.2	81.5
23 Aug	201.3	245.1	—	—	—
22 Aug	201.4	244.6	—	—	—
21 Aug	203.3	244.0	195.7	238.3	84.9
20 Aug	205.3	242.5	194.9	236.9	83.0
19 Aug	207.3	241.0	194.2	235.3	81.6
18 Aug	191.2	239.4	193.3	233.4	84.5
17 Aug	193.3	237.9	192.7	231.9	81.7
16 Aug	194.0	237.9	—	—	—
15 Aug	194.4	237.6	—	—	—
14 Aug	197.0	236.1	191.1	229.3	81.6
13 Aug	200.7	236.6	189.8	227.0	82.0
12 Aug	204.5	237.0	189.7	226.1	82.3
11 Aug	193.0	238.7	190.9	228.6	83.1
10 Aug	198.4	240.5	192.7	230.2	82.6
9 Aug	199.7	241.4	—	—	—
8 Aug	200.9	241.7	—	—	—
7 Aug	204.8	242.6	196.4	234.3	78.0
6 Aug	208.2	242.5	198.3	236.9	80.2
5 Aug	210.7	242.4	198.5	238.4	77.3
4 Aug	195.7	239.8	198.1	237.0	77.3
3 Aug	194.8	237.9	203.4	241.8	79.9
2 Aug	192.3	230.8	—	—	—
1 Aug	192.6	230.0	—	—	—
31 July	193.8	228.6	183.3	220.2	86.8
30 July	195.4	227.7	183.8	220.3	82.3
29 July	197.2	226.4	183.4	219.7	83.5
28 July	183.8	224.6	182.5	218.3	77.0
27 July	185.8	222.0	180.4	215.5	82.6
26 July	185.3	220.8	—	—	—
25 July	184.7	219.1	—	—	—
24 July	183.4	215.7	177.1	211.7	90.2
23 July	184.1	212.2	174.1	208.1	95.0
22 July	185.5	209.2	172.7	207.1	84.6
21 July	169.5	206.2	169.7	203.0	84.2
20 July	172.5	203.6	168.1	199.8	78.1
19 July	172.9	203.0	—	—	—
18 July	172.9	201.3	—	—	—
17 July	173.7	197.8	166.0	196.7	76.5
16 July	174.8	192.3	163.7	191.3	72.9
15 July	175.6	188.1	161.2	184.6	74.7
14 July	162.2	185.6	159.8	181.2	75.5
13 July	164.8	184.9	159.8	180.2	74.0
12 July	165.3	184.6	—	—	—
11 July	165.4	183.2	—	—	—
10 July	167.2	181.9	160.0	178.7	67.2
9 July	170.4	181.6	161.4	177.9	67.4
8 July	173.3	181.5	162.2	177.3	69.6
7 July	163.0	181.7	163.4	176.9	65.1
6 July	165.4	181.8	163.8	176.3	63.0
5 July	165.9	184.2	—	—	—
4 July	165.6	183.5	—	—	—
3 July	164.6	180.3	163.3	174.6	—
2 July	166.4	178.5	162.8	172.8	62.2
1 July	164.1	177.0	160.1	169.3	63.1
30 June	147.9	167.8	146.5	156.0	64.1
29 June	149.9	168.2	146.5	155.4	65.4
28 June	150.9	168.8	—	—	—
27 June	151.5	169.3	—	—	—
26 June	153.2	170.1	147.5	155.9	63.9
25 June	156.8	172.5	148.0	156.4	67.0
24 June	160.3	174.0	148.3	157.5	65.8
23 June	151.4	176.6	150.3	161.5	68.7
22 June	155.9	179.5	151.0	162.9	68.7
21 June	157.6	180.9	—	—	—
20 June	158.3	181.9	—	—	—
19 June	159.9	184.8	153.0	166.7	—
18 June	164.1	187.5	156.3	173.2	71.1
17 June	168.0	188.9	158.7	177.8	71.4
16 June	159.0	191.0	160.9	183.4	71.5
15 June	162.6	192.4	160.7	185.1	74.9
14 June	163.5	192.7	—	—	—
13 June	163.7	192.6	—	—	—
12 June	164.9	193.3	160.0	186.8	79.1
11 June	167.9	193.5	159.3	188.3	83.5
10 June	171.2	194.0	158.4	188.3	85.7
9 June	159.8	194.2	158.1	187.9	84.3
8 June	163.1	195.4	158.2	187.3	86.9
7 June	164.3	196.1	—	—	—
6 June	164.7	196.7	—	—	—
5 June	166.7	197.7	158.9	185.8	86.7
4 June	170.5	200.4	159.1	184.3	87.2
3 June	174.5	201.6	161.2	184.7	89.6
2 June	165.7	203.0	163.6	186.6	86.2
1 June	169.8	205.7	165.9	189.5	86.4
31 May	171.2	206.3	—	—	—
30 May	172.1	206.8	—	—	—
29 May	175.3	208.9	168.8	193.2	81.2
28 May	180.8	210.8	171.6	197.1	83.9
27 May	186.4	213.2	174.6	201.2	85.6
26 May	176.3	214.0	177.7	205.6	90.2
25 May	180.1	215.2	179.2	206.5	—
24 May	181.4	215.7	—	—	—
23 May	181.7	216.1	—	—	—
22 May	182.2	216.1	179.7	206.8	94.3
21 May	184.3	216.3	179.2	206.3	93.3
20 May	187.5	215.9	177.3	204.5	95.8
19 May	174.1	217.1	173.9	201.8	101.5
18 May	176.2	218.2	172.1	200.2	102.5
17 May	176.6	218.7	—	—	—
16 May	176.5	219.4	—	—	—
15 May	177.0	219.1	170.9	198.7	100.2
14 May	179.7	219.9	171.2	198.4	96.6
13 May	184.2	222.1	172.0	199.7	95.5
12 May	173.6	225.6	174.8	203.2	97.0
11 May	177.9	228.1	177.2	206.3	91.9
10 May	179.7	229.9	—	—	—
9 May	180.1	230.8	—	—	—
8 May	180.9	233.2	180.2	213.2	89.9
7 May	183.6	235.7	181.1	216.8	88.4
6 May	186.6	237.5	180.6	219.2	90.2
5 May	173.9	239.6	180.9	223.5	100.1
4 May	176.7	240.5	181.1	224.0	—
3 May	177.2	240.6	—	—	—
2 May	177.2	240.9	—	—	—
1 May	178.4	241.2	180.5	224.2	103.0
30 Apr	182.7	241.8	179.7	223.8	108.8
29 Apr	188.1	242.3	178.7	222.9	109.5
28 Apr	175.1	244.2	177.8	221.4	103.0
27 Apr	179.7	246.0	177.6	221.6	99.6
26 Apr	180.1	246.9	—	—	—
25 Apr	180.6	247.6	—	—	—
24 Apr	182.3	251.4	176.9	222.3	98.3
23 Apr	187.0	259.3	179.1	226.8	99.5
22 Apr	194.0	269.1	181.2	235.8	99.6
21 Apr	188.5	277.4	184.0	247.6	93.2
20 Apr	194.2	282.7	185.4	253.8	90.6
19 Apr	195.9	286.3	—	—	—
18 Apr	197.2	288.4	—	—	—
17 Apr	201.6	294.7	188.8	260.4	86.3
16 Apr	207.1	300.6	190.2	267.8	102.3
15 Apr	214.4	306.2	194.1	283.3	100.9
14 Apr	207.3	311.4	197.2	294.2	104.7
13 Apr	212.7	315.7	199.8	301.8	109.8
10 Apr	—	—	203.9	316.5	105.8
9 Apr	—	—	207.1	323.8	105.7
8 Apr	—	—	206.3	319.0	108.8
7 Apr	—	—	202.4	300.1	125.2
6 Apr	—	—	202.4	299.9	—
3 Apr	—	—	203.2	297.9	—
2 Apr	—	—	203.9	290.5	116.1
1 Apr	—	—	204.5	287.2	108.3
31 Mar	—	—	229.5	306.5	116.2
30 Mar	—	—	242.1	310.0	111.8
27 Mar	—	—	246.8	309.7	110.9
26 Mar	—	—	249.5	308.4	103.2
25 Mar	—	—	248.8	302.4	98.6
24 Mar	—	—	245.0	294.1	97.9
23 Mar	—	—	243.0	290.0	93.3
20 Mar	—	—	238.0	282.7	105.9
19 Mar	—	—	235.4	278.0	99.3
18 Mar	—	—	230.8	271.4	104.9
17 Mar	—	—	223.6	264.6	96.0
16 Mar	—	—	218.6	258.7	90.1
13 Mar	—	—	210.1	247.8	92.7
12 Mar	—	—	204.7	242.1	90.8
11 Mar	—	—	193.7	226.7	80.0
10 Mar	—	—	188.1	219.6	79.0
9 Mar	—	—	175.4	198.8	84.2
6 Mar	—	—	168.7	184.8	85.8
5 Mar	—	—	162.4	172.7	79.5
4 Mar	—	—	159.9	168.2	72.5
3 Mar	—	—	157.6	164.8	74.6
2 Mar	—	—	157.0	164.6	68.7
27 Feb	—	—	156.0	164.3	63.0
26 Feb	—	—	155.5	164.0	63.6
25 Feb	—	—	154.9	163.5	62.5
24 Feb	—	—	153.3	162.0	63.4
23 Feb	—	—	152.2	160.9	64.0
20 Feb	—	—	152.0	160.5	64.6
19 Feb	—	—	152.6	160.8	65.3
18 Feb	—	—	153.1	161.0	63.9
17 Feb	—	—	153.6	161.6	62.1
16 Feb	—	—	153.9	162.0	—
13 Feb	—	—	153.7	162.1	62.3
12 Feb	—	—	153.1	162.0	61.9
11 Feb	—	—	152.5	162.0	63.1
10 Feb	—	—	152.1	161.9	63.2
9 Feb	—	—	152.0	161.6	63.2
6 Feb	—	—	152.0	161.4	63.2
5 Feb	—	—	152.2	161.2	63.0
4 Feb	—	—	152.4	161.0	64.0
3 Feb	—	—	153.0	160.7	62.7
2 Feb	—	—	153.2	160.6	61.2
30 Jan	—	—	152.4	159.6	65.0
29 Jan	—	—	152.9	159.8	63.7
28 Jan	—	—	153.2	159.9	63.8
27 Jan	—	—	153.3	159.4	63.3
26 Jan	—	—	153.3	159.4	61.4
23 Jan	—	—	153.4	159.0	62.3
22 Jan	—	—	153.5	158.7	60.2
21 Jan	—	—	153.6	158.3	62.0
20 Jan	—	—	153.5	157.2	63.1
19 Jan	—	—	153.6	156.9	—
16 Jan	—	—	153.1	155.9	63.0
15 Jan	—	—	152.5	154.9	62.1
14 Jan	—	—	152.4	154.7	64.9
13 Jan	—	—	152.3	154.5	63.6
12 Jan	—	—	152.4	154.7	61.2
9 Jan	—	—	152.8	155.2	61.3
8 Jan	—	—	153.4	155.8	59.5
7 Jan	—	—	153.8	156.1	57.1
6 Jan	—	—	154.2	156.2	58.0
5 Jan	—	—	154.4	156.4	59.0
2 Jan	—	—	154.6	156.5	58.3
1 Jan	—	—	154.6	156.5	—

Perth against the rest of Western Australia

Perth averaged 220.1 c/L for U91 and the rest of Western Australia 237.1 c/L, so reported prices in the rest of Western Australia averaged 17.0 c/L more than Perth. Perth averaged 262.9 c/L for diesel and the rest of Western Australia 277.5 c/L, so reported prices in the rest of Western Australia averaged 14.6 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 (30 rows)

U91 daily averages, Perth and Rest of Western Australia, 1 Sept to 30 Sept
Date	Perth (c/L)	Rest of Western Australia (c/L)	Difference
30 Sept	239.0	250.9	+11.9
29 Sept	225.9	250.3	+24.4
28 Sept	229.9	250.6	+20.7
27 Sept	230.2	250.6	+20.4
26 Sept	230.8	250.6	+19.8
25 Sept	232.8	250.7	+17.9
24 Sept	236.9	250.1	+13.2
23 Sept	239.8	249.6	+9.8
22 Sept	227.0	248.1	+21.1
21 Sept	231.2	246.6	+15.4
20 Sept	231.6	245.7	+14.1
19 Sept	232.0	244.9	+12.9
18 Sept	231.3	242.5	+11.2
17 Sept	230.6	239.2	+8.6
16 Sept	230.8	236.5	+5.7
15 Sept	211.4	233.3	+21.9
14 Sept	211.9	231.5	+19.6
13 Sept	211.7	231.1	+19.4
12 Sept	211.0	230.5	+19.5
11 Sept	212.5	229.4	+16.9
10 Sept	214.8	228.1	+13.3
9 Sept	217.0	226.9	+9.9
8 Sept	200.4	225.6	+25.2
7 Sept	203.0	224.7	+21.7
6 Sept	203.7	224.4	+20.7
5 Sept	203.5	224.3	+20.8
4 Sept	205.7	223.9	+18.2
3 Sept	208.2	223.8	+15.6
2 Sept	211.2	223.9	+12.7
1 Sept	196.0	223.4	+27.4

The price cycle in Perth

Perth's U91 price cycle ran in September 2026: five hikes lifted the margin over the terminal gate price by 13.6 c/L on average, with peaks about 7.0 days apart. The largest took the U91 average from 211.4 c/L on 15 September to 230.8 c/L on 16 September, while the terminal gate price rose 4.6 c/L.

Price-cycle hikes under the margin-based rule, September 2026
From	c/L	To	c/L	Rise
1 September	196.0	2 September	211.2	+15.2
8 September	200.4	9 September	217.0	+16.6
15 September	211.4	16 September	230.8	+19.4
22 September	227.0	23 September	239.8	+12.8
29 September	225.9	30 September	239.0	+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 stayed at 53.7 c/L for petrol and diesel through September 2026.

Fuel excise, September 2026
Petrol and diesel excise	Rate (c/L, before GST)	Change
In force on 1 September 2026	53.7	—
Average over the days of 1 September to 30 September 2026	53.70	—

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 218.8 c/L and Canberra the dearest at 230.4 c/L. Perth ranked the cheapest of the 8 capital cities for diesel; Perth was the cheapest at 262.9 c/L and Canberra the dearest at 282.6 c/L.

Every capital city by average U91 price, September 2026
Capital	Sep	Month	Change	Stations
AdelaideCheapest capital	218.8	218.8	+16.7	278
PerthThis report	220.1	220.1	+19.8	439
Melbourne	220.3	220.3	+18.4	857
Brisbane	222.3	222.3	+20.1	501
Sydney	222.6	222.6	+22.6	675
Hobart	227.3	227.3	+20.8	59
Darwin	229.7	229.7	+19.4	46
CanberraDearest capital	230.4	230.4	+23.7	38

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 2026
Capital	Sep	Month	Change	Stations
PerthThis report · Cheapest capital	262.9	262.9	+21.7	200
Sydney	266.3	266.3	+22.7	248
Adelaide	269.2	269.2	+28.4	61
Melbourne	269.6	269.6	+21.6	414
Brisbane	271.8	271.8	+24.2	193
Hobart	272.5	272.5	+21.5	37
Darwin	276.3	276.3	+24.5	48
CanberraDearest capital	282.6	282.6	+30.8	13

Perth by area

Inside Perth, Perth South East was the cheapest area for U91 at 219.2 c/L and Mandurah the dearest at 223.4 c/L, a spread of 4.2 c/L.

Perth South East219.2 (lowest)
Perth South West219.4
Perth North East220.0
Perth North West220.5
Perth Inner221.7
Mandurah223.4

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 viewwith diesel and the cheapest station

Perth areas by average price, September 2026
Area (ABS SA4)	U91	U91 change	Diesel	Diesel margin	U91 stations	Cheapest U91 station
Perth South East	219.2	+19.8	262.7	12.5	125	Costco Perth Airport202.9 c/L average
Perth South West	219.4	+19.3	262.7	12.5	96	Costco Casuarina202.9 c/L average
Perth North East	220.0	+20.0	260.1	9.9	67	Burk Bassendean209.2 c/L average
Perth North West	220.5	+19.9	262.7	12.5	100	Burk Landsdale208.6 c/L average
Perth Inner	221.7	+20.1	268.5	18.3	28	Burk Mount Lawley209.7 c/L average
Mandurah	223.4	+20.1	273.4	23.2	23	Vibe Mandurah217.6 c/L average

Regional towns cheaper than Perth, U91

Regional towns with a U91 average below Perth’s, September 2026
Town	Sep	Month	Against Perth
Oakford (rural)	208.2	208.2	−11.9
Gidgegannup (rural)	213.5	213.5	−6.6
Pinjarra	213.9	213.9	−6.2
Kulin	216.0	216.0	−4.1
Albany	216.9	216.9	−3.2
Bunbury	217.8	217.8	−2.3
Gingin	218.1	218.1	−2.0
Bullsbrook	218.3	218.3	−1.8
Busselton	218.4	218.4	−1.7
Anketell	219.5	219.5	−0.6
Donnybrook	220.0	220.0	−0.1
Meekatharra	220.0	220.0	−0.1

Cents a litre, cheapest first. Perth’s U91 average was 220.1 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 208.2 c/L, 11.9 c/L below Perth. Drysdale River (rural) was the dearest at 354.7 c/L, 134.6 c/L above Perth. 12 of the 83 towns we ranked averaged less than Perth for U91. Oakford (rural) was the cheapest regional town for diesel at 248.1 c/L and Warmun the dearest at 386.7 c/L, a spread of 138.6 c/L.

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; 187 smaller places were left out. The cheapest station’s figure is its own average over the period.

Table viewwith the stations and the cheapest station

Western Australia regional towns by average U91 price, September 2026
Town	Average	Against Perth	Stations	Cheapest station
Oakford (rural)	208.2	−11.9	2	Burk Oakford208.1 c/L average
Gidgegannup (rural)	213.5	−6.6	2	Vibe Toodyay Rd213.0 c/L average
Pinjarra	213.9	−6.2	5	Vibe Pinjarra209.9 c/L average
Kulin	216.0	−4.1	2	Shire of Kulin208.9 c/L average
Albany	216.9	−3.2	15	AMPM Highway175.9 c/L average
Bunbury	217.8	−2.3	27	Vibe Bunbury South211.7 c/L average
Gingin	218.1	−2.0	2	Gingin Fuel and Tyres217.0 c/L average
Bullsbrook	218.3	−1.8	2	Vibe Bullsbrook216.9 c/L average
Busselton	218.4	−1.7	14	Vibe Broadwater211.1 c/L average
Anketell	219.5	−0.6	2	United Anketell219.5 c/L average
Donnybrook	220.0	−0.1	4	Vibe Donnybrook217.9 c/L average
Meekatharra	220.0	−0.1	3	Meekatharra Corner Store212.9 c/L average
Geraldton	220.2	+0.1	17	Metro Geraldton214.7 c/L average
Manjimup	220.3	+0.2	6	Dunning's Manjimup216.8 c/L average
Port Denison – Dongara	221.2	+1.1	3	Liberty Dongara214.5 c/L average
Karragullen (rural)	221.3	+1.2	3	Petro Fuels Karragullen216.7 c/L average
Williams	221.5	+1.4	3	Burk Williams217.6 c/L average
Meadow (rural)	221.6	+1.5	2	Billabong Roadhouse195.0 c/L average
Northam	222.0	+1.9	4	BP Northam OPT220.7 c/L average
Yanchep	222.1	+2.0	3	7-Eleven Yanchep220.2 c/L average
Moora	222.2	+2.1	2	Caltex Moora221.9 c/L average
Harvey	222.7	+2.6	2	Vibe Harvey221.5 c/L average
Merredin	222.7	+2.6	3	Dunning's Merredin219.4 c/L average
Bridgetown	222.8	+2.7	3	Vibe Bridgetown221.7 c/L average
Narrogin	223.0	+2.9	2	BP Narrogin221.7 c/L average
Denmark	223.2	+3.1	3	United Denmark220.6 c/L average
Mingenew	223.3	+3.2	2	Atlas Fuel Mingenew220.3 c/L average
Southern Cross	223.5	+3.4	3	Eagle Southern Cross215.1 c/L average
Kalgoorlie–Boulder	223.6	+3.5	11	Liberty Kalgoorlie215.8 c/L average
Cataby (rural)	224.1	+4.0	2	Liberty Cataby215.5 c/L average
Dunsborough	224.4	+4.3	3	7-Eleven Dunsborough222.4 c/L average
Waroona	224.4	+4.3	3	Vibe Waroona223.2 c/L average
Kalbarri	224.8	+4.7	3	BP Kalbarri224.3 c/L average
Margaret River	224.8	+4.7	3	Geographe Petroleum Margaret River222.8 c/L average
Gnowangerup	224.9	+4.8	2	Gnowangerup Fuel Supplies216.9 c/L average
West Pinjarra (rural)	225.0	+4.9	2	Ampol Foodary Forrest Highway North225.0 c/L average
Dalwallinu	225.1	+5.0	2	Refuel Australia - Dalwallinu224.4 c/L average
Wagin	225.2	+5.1	2	BP Wagin OPT223.8 c/L average
Mount Barker	225.5	+5.4	3	United Mount Barker Roadhouse Truck Stop223.2 c/L average
York	225.5	+5.4	2	Smiths Shell Service225.5 c/L average
Hyden (rural)	225.6	+5.5	3	Waveline Tyres223.3 c/L average
Mullewa	225.9	+5.8	2	Crudeli's Auto Repairs224.8 c/L average
Katanning	226.5	+6.4	4	Shell Katanning219.6 c/L average
Cunderdin	226.8	+6.7	2	BP Cunderdin Roadhouse221.9 c/L average
Jerramungup	227.4	+7.3	3	BP Jerramungup OPT224.7 c/L average
Toodyay	227.4	+7.3	2	Dunning's Toodyay Junction227.4 c/L average
Walpole	227.8	+7.7	2	Walpole IGA Pioneer Store226.4 c/L average
Corrigin	227.9	+7.8	2	BP Corrigin OPT222.8 c/L average
Esperance	228.8	+8.7	7	WFG Shell Esperance OPT224.1 c/L average
Northampton	229.4	+9.3	2	Refuel Australia - Northampton226.4 c/L average
Northcliffe (rural)	229.9	+9.8	2	Northcliffe Farm and Trade228.0 c/L average
Newman	230.0	+9.9	3	Dunning's Newman223.6 c/L average
Denham	230.4	+10.3	3	Shark Bay Fuel Fishing & Camping Centre229.3 c/L average
Jurien Bay	230.6	+10.5	3	Metro Jurien Bay226.1 c/L average
Morawa	231.2	+11.1	3	BP Morawa OPT226.2 c/L average
Karratha	231.6	+11.5	7	Dunning's Karratha221.9 c/L average
Lake Grace	232.1	+12.0	2	BP Lake Grace OPT223.8 c/L average
Nannup	233.4	+13.3	2	BP Nannup233.0 c/L average
Hopetoun	234.3	+14.2	2	Hopetoun General Store233.8 c/L average
Kununurra	235.6	+15.5	3	CGL Fuel228.6 c/L average
Ravensthorpe	235.8	+15.7	2	GSG WA Pty Ltd233.7 c/L average
Collie	236.2	+16.1	3	Gull Collie233.7 c/L average
Bremer Bay	236.6	+16.5	2	The Roadhouse Hooked and Cooked234.2 c/L average
Leonora	236.9	+16.8	2	Liberty Leonora236.5 c/L average
Boddington–Ranford	237.1	+17.0	2	Boddington Service Station234.7 c/L average
Laverton	238.1	+18.0	2	Shell Laverton228.3 c/L average
Brookton	238.8	+18.7	2	Stumpys Gateway Roadhouse235.6 c/L average
Carnarvon	240.7	+20.6	4	Dunning's KCD Fuels238.9 c/L average
Quairading	244.7	+24.6	2	Quairading Tyre and Battery Supplies240.4 c/L average
Coolgardie	245.3	+25.2	2	Vibe Coolgardie244.8 c/L average
Boyup Brook	245.4	+25.3	2	Boyup Brook Tyre Service241.3 c/L average
Norseman	246.3	+26.2	2	Ampol Foodary Norseman245.7 c/L average
Wiluna	246.6	+26.5	2	Mantjiljarra Community Store239.0 c/L average
Fitzroy Crossing	253.1	+33.0	3	Fitzroy River Lodge246.8 c/L average
Port Hedland	254.0	+33.9	9	BP Port Hedland246.0 c/L average
Derby	257.2	+37.1	2	Derby Fuels256.9 c/L average
Broome	257.5	+37.4	6	Dunning's Broome253.0 c/L average
Exmouth	258.4	+38.3	3	Ningaloo Reef Fuels253.5 c/L average
Halls Creek	265.9	+45.8	2	Shell Reddy Express Halls Creek263.1 c/L average
Onslow	270.8	+50.7	2	Thalanyji Fish and Fuel270.8 c/L average
Djarindjin–Lombadina	292.2	+72.1	2	Djarindjin Roadhouse284.3 c/L average
Warmun	336.1	+116.0	2	Warmun Roadhouse336.1 c/L average
Drysdale River (rural)	354.7	+134.6	2	Drysdale River Station334.3 c/L average

Regional towns ranked, diesel

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 viewwith the stations and the cheapest station

Western Australia regional towns by average diesel price, September 2026
Town	Average	Against Perth	Stations	Cheapest station
Oakford (rural)	248.1	−14.8	2	Vibe Oakford Truckstop247.7 c/L average
Pinjarra	255.5	−7.4	5	Vibe Pinjarra252.4 c/L average
Albany	258.0	−4.9	12	AMPM Highway244.9 c/L average
Katanning	258.1	−4.8	3	Shell Katanning254.1 c/L average
Gidgegannup (rural)	258.3	−4.6	2	Vibe Toodyay Rd256.5 c/L average
Muchea (rural)	258.4	−4.5	3	Road Trains of Australia248.5 c/L average
Karragullen (rural)	258.7	−4.2	2	Petro Fuels Karragullen254.0 c/L average
Bunbury	258.8	−4.1	15	Vibe Bunbury East253.5 c/L average
Busselton	258.9	−4.0	11	Vibe Broadwater252.0 c/L average
Donnybrook	258.9	−4.0	4	Vibe Donnybrook256.9 c/L average
Manjimup	258.9	−4.0	5	Dunning's Manjimup257.0 c/L average
Kulin	259.5	−3.4	2	Shire of Kulin256.6 c/L average
Williams	259.5	−3.4	3	Burk Williams255.7 c/L average
Mukinbudin	260.5	−2.4	2	Geraghty's Engineering & Auto Electrics258.3 c/L average
Waroona	260.5	−2.4	3	Vibe Waroona258.4 c/L average
Cunderdin	261.8	−1.1	2	BP Cunderdin Roadhouse256.5 c/L average
Gingin	261.8	−1.1	2	Gull Gingin261.4 c/L average
Merredin	261.8	−1.1	2	Dunning's Merredin258.6 c/L average
Cataby (rural)	262.4	−0.5	2	Liberty Cataby256.4 c/L average
Geraldton	263.0	+0.1	13	Astron Rangeway Truck Stop254.7 c/L average
Denmark	263.2	+0.3	3	United Denmark260.8 c/L average
Mingenew	263.2	+0.3	2	Atlas Fuel Mingenew262.4 c/L average
Gnowangerup	263.6	+0.7	2	Gnowangerup Fuel Supplies256.7 c/L average
Port Denison – Dongara	264.0	+1.1	3	Liberty Dongara254.7 c/L average
Bridgetown	264.2	+1.3	3	Vibe Bridgetown262.5 c/L average
Jerramungup	264.5	+1.6	3	Jerramungup Cafe and Fuel261.7 c/L average
Kununurra	264.6	+1.7	2	CGL Fuel250.8 c/L average
Walpole	264.8	+1.9	2	Walpole IGA Pioneer Store263.7 c/L average
Kalgoorlie–Boulder	264.9	+2.0	8	Liberty Kalgoorlie259.0 c/L average
Esperance	265.0	+2.1	4	Perrys Esperance259.7 c/L average
Bullsbrook	265.7	+2.8	2	Vibe Bullsbrook264.2 c/L average
Kalbarri	266.4	+3.5	3	BP Kalbarri264.2 c/L average
Margaret River	266.6	+3.7	3	Geographe Petroleum Margaret River263.2 c/L average
Kununurra (rural)	267.1	+4.2	2	BP Kununurra Depot (Recharge Petroleum)266.7 c/L average
Meadow (rural)	267.1	+4.2	2	Billabong Roadhouse265.3 c/L average
Hyden (rural)	267.3	+4.4	3	BP Hyden OPT264.4 c/L average
Southern Cross	267.3	+4.4	3	Eagle Southern Cross260.7 c/L average
York	267.3	+4.4	2	Gull York Roadhouse267.2 c/L average
Northam	267.5	+4.6	3	BP Northam OPT259.8 c/L average
Northcliffe (rural)	267.6	+4.7	2	Northcliffe Farm and Trade266.2 c/L average
Kojonup	268.2	+5.3	2	Hillview Roadhouse and Motel266.6 c/L average
Mount Barker	268.5	+5.6	3	United Mount Barker Roadhouse Truck Stop266.8 c/L average
Corrigin	269.0	+6.1	2	BP Corrigin OPT260.3 c/L average
Toodyay	269.0	+6.1	2	Dunning's Toodyay Junction269.0 c/L average
Morawa	269.1	+6.2	3	BP Morawa OPT262.6 c/L average
Lake Grace	269.3	+6.4	2	BP Lake Grace OPT261.7 c/L average
Dunsborough	269.6	+6.7	2	BP Dunsborough266.8 c/L average
Mullewa	270.2	+7.3	2	Crudeli's Auto Repairs268.3 c/L average
Carnarvon	270.5	+7.6	4	Dunning's KCD Fuels267.8 c/L average
Anketell	271.2	+8.3	2	United Anketell271.2 c/L average
Brookton	271.2	+8.3	2	Brookton Roadhouse271.1 c/L average
Northampton	271.2	+8.3	2	Refuel Australia - Northampton268.2 c/L average
Karratha	271.6	+8.7	8	Dunning's Karratha261.7 c/L average
Cue	272.4	+9.5	2	Ampol Cue Roadhouse272.4 c/L average
Meekatharra	272.4	+9.5	3	Meekatharra Corner Store266.9 c/L average
Hopetoun	273.6	+10.7	2	Hopetoun General Store273.1 c/L average
Boddington–Ranford	273.8	+10.9	2	Boddington Service Station271.5 c/L average
Denham	274.1	+11.2	3	Refuel Australia - Denham271.9 c/L average
Nannup	274.2	+11.3	2	BP Nannup273.3 c/L average
Ravensthorpe	274.5	+11.6	2	GSG WA Pty Ltd272.4 c/L average
Quairading	275.2	+12.3	2	Quairading Tyre and Battery Supplies269.4 c/L average
Port Hedland	276.1	+13.2	9	Dunning's Wedgefield264.8 c/L average
Coolgardie	276.7	+13.8	2	Vibe Coolgardie276.1 c/L average
Collie	278.2	+15.3	3	Gull Collie276.1 c/L average
Newman	278.3	+15.4	3	Smart Mart Newman277.1 c/L average
West Pinjarra (rural)	278.7	+15.8	2	Ampol Foodary Forrest Highway North278.7 c/L average
Broome	279.0	+16.1	8	Dunning's Broome Depot272.7 c/L average
Bremer Bay	279.2	+16.3	2	The Roadhouse Hooked and Cooked276.3 c/L average
Leonora	279.6	+16.7	2	Shell Reddy Express Leonora278.0 c/L average
Boyup Brook	281.7	+18.8	2	Boyup Brook Tyre Service277.2 c/L average
Halls Creek	283.4	+20.5	3	Halls Creek Service Station281.7 c/L average
Laverton	286.5	+23.6	3	Eagle Laverton282.2 c/L average
Fitzroy Crossing	288.7	+25.8	4	Fitzroy River Lodge282.5 c/L average
Norseman	289.5	+26.6	2	Ampol Foodary Norseman287.3 c/L average
Derby	290.1	+27.2	3	BP Derby Depot (Recharge Petroleum)286.0 c/L average
Exmouth	297.3	+34.4	3	Ningaloo Reef Fuels292.1 c/L average
Djarindjin–Lombadina	303.0	+40.1	2	Djarindjin Roadhouse295.0 c/L average
Wiluna	307.8	+44.9	2	Refuel Australia - Wiluna298.6 c/L average
Onslow	330.8	+67.9	2	Thalanyji Fish and Fuel330.8 c/L average
Drysdale River (rural)	362.2	+99.3	2	Kalumburu Mission350.0 c/L average
Warmun	386.7	+123.8	2	Warmun Roadhouse386.7 c/L average

Other fuels: cheapest and dearest towns

Cheapest and dearest towns for the other fuels, September 2026
Fuel	Cheapest town (c/L)	Dearest town (c/L)	Towns ranked
Premium 95	Oakford (rural) 222.9	Broome 274.0	19
Premium 98	Meadow (rural) 232.9	Port Hedland 278.7	46

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

Regional centres, U91

Albany was the cheapest of the 10 regional centres we ranked for U91 at 216.9 c/L, and Broome the dearest at 257.5 c/L. Three of them averaged less than Perth.

Regional centres ranked by their U91 average, September 2026
#	Centre	Size	Month	Against Perth	Change	Diesel
1	Albany	20,000 to 49,999 people	216.9	−3.2	+15.4	258.0
2	Bunbury	50,000 to 99,999 people	217.8	−2.3	+16.4	258.8
3	Busselton	20,000 to 49,999 people	218.4	−1.7	+18.4	258.9
4	Geraldton	20,000 to 49,999 people	220.2	+0.1	+16.1	263.0
5	Yanchep	10,000 to 19,999 people	222.1	+2.0	+19.9	—
6	Kalgoorlie–Boulder	20,000 to 49,999 people	223.6	+3.5	+18.3	264.9
7	Esperance	10,000 to 19,999 people	228.8	+8.7	+18.5	265.0
8	Karratha	10,000 to 19,999 people	231.6	+11.5	+13.0	271.6
9	Port Hedland	10,000 to 19,999 people	254.0	+33.9	+16.4	276.1
10	Broome	10,000 to 19,999 people	257.5	+37.4	+20.7	279.0

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 219.2 c/L for U91, 0.9 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 219.4 c/L for U91, 0.7 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 220.0 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 220.5 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: September 2026, since our records began on 13 April 2026, and each month
Area	Month	Against Perth	Year so far	Apr	May	Jun	Jul	Aug	Sep	Months cheaper
Perth South East	219.2	−0.9	−0.9	−0.9	−1.0	−1.0	−0.7	−0.9	−0.9	6 of 6
Perth South West	219.4	−0.7	−0.1	−0.3	−0.1	+0.2	−0.1	−0.2	−0.7	5 of 6
Perth North East	220.0	−0.1	−0.1	+0.3	−0.3	−0.3	−0.1	−0.3	−0.1	5 of 6
Perth North West	220.5	+0.4	+0.4	+0.5	+0.4	+0.3	+0.2	+0.3	+0.4	0 of 6
Perth Inner	221.7	+1.6	+1.4	+1.3	+2.3	+0.8	+1.2	+1.3	+1.6	0 of 6
Mandurah	223.4	+3.3	+2.6	+2.3	+2.3	+2.1	+2.6	+3.0	+3.3	0 of 6
BunburyRegional centre	217.8	−2.3	+2.7	+4.4	+2.2	+8.5	+2.2	+1.1	−2.3	1 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 213.9 c/L and West Pinjarra (rural) the dearest at 225.0 c/L. Gidgegannup (rural) was the cheapest place outside a town in Perth North East for U91 at 213.5 c/L and Bullsbrook the dearest at 218.3 c/L. Oakford (rural) was the cheapest place outside a town in Perth South East for U91 at 208.2 c/L and Karragullen (rural) the dearest at 221.3 c/L. Of the suburbs and towns we ranked, the widest spread was in Outback Western Australia (North): Nickol at 228.0 c/L to Gibson Desert North at 380.0 c/L, a gap of 152.0 c/L.

The cheapest and dearest suburb or town in each ABS SA4 area, September 2026
Area	Cheapest suburb or town	Dearest	Cheapest town outside Perth	Cheapest since records began
MandurahPerth area	Pinjarra210.3 c/L	Meadow Springs225.6 c/L	Pinjarra213.9 c/L	Pinjarra179.8 c/L
Perth InnerPerth area	Mount Lawley216.2 c/L	Nedlands224.3 c/L	—	Mount Lawley184.4 c/L
Perth North EastPerth area	Gidgegannup213.5 c/L	Dayton224.5 c/L	Gidgegannup (rural)213.5 c/L	Bassendean182.1 c/L
Perth North WestPerth area	Wanneroo213.4 c/L	Mindarie225.8 c/L	Yanchep222.1 c/L	Landsdale181.2 c/L
Perth South EastPerth area	Oakford208.2 c/L	Belmont225.0 c/L	Oakford (rural)208.2 c/L	Oakford174.3 c/L
Perth South WestPerth area	Kwinana Beach211.7 c/L	Murdoch224.4 c/L	Anketell219.5 c/L	Kwinana Beach182.0 c/L
Bunbury	Broadwater211.8 c/L	Boyup Brook245.4 c/L	Bunbury217.8 c/L	Broadwater181.3 c/L
Outback Western Australia (North)	Nickol228.0 c/L	Gibson Desert North380.0 c/L	Newman230.0 c/L	Nickol204.1 c/L
Outback Western Australia (South)	Mahomets Flats218.2 c/L	Exmouth258.4 c/L	Meekatharra220.0 c/L	Kalgoorlie189.9 c/L
Western Australia – Wheat Belt	Mount Melville206.2 c/L	Quairading244.7 c/L	Kulin216.0 c/L	Mount Melville187.8 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
Fuel	Western Australia	Perth	Rest of Western Australia
U91	199.3	187.6	210.8
Diesel	242.5	227.6	249.8

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
Town	Average	Against Perth
Oakford (rural)	174.3	−13.3
Anketell	184.8	−2.8
Bullsbrook	184.9	−2.7
Pinjarra	185.0	−2.6
Gidgegannup (rural)	186.1	−1.5
Busselton	188.9	+1.3
Albany	189.8	+2.2
Bunbury	190.3	+2.7
Northam	191.7	+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
Town	Average	Against Perth
Drysdale River (rural)	345.2	+157.6
Warmun	316.0	+128.4
Djarindjin–Lombadina	280.3	+92.7
Onslow	246.8	+59.2
Halls Creek	244.0	+56.4
Exmouth	232.9	+45.3
Derby	230.2	+42.6
Broome	228.5	+40.9
Fitzroy Crossing	227.3	+39.7
Wiluna	225.3	+37.7

The day of the week to buy U91

Since our records began on 13 April 2026, Tuesday has been the cheapest day to buy U91 in Perth and Wednesday the dearest, 12.6 c/L apart on average.

The cheapest and dearest day of the week, and how far apart they were on average
Place	Cheapest / dearest, month	On 60 litres	Since records began
Perth	—	—	Tuesday / Wednesday12.6 c/L apart
BunburyRegional centre	—	—	Tuesday / Monday0.1 c/L apart
AlbanyRegional centre	—	—	Tuesday / Thursday0.4 c/L apart
BusseltonRegional centre	—	—	Tuesday / Monday0.2 c/L apart
GeraldtonRegional centre	—	—	Tuesday / Thursday0.3 c/L apart
Kalgoorlie–BoulderRegional centre	—	—	Monday / Friday0.2 c/L apart
BroomeRegional centre	—	—	Monday / Thursday0.6 c/L apart
EsperanceRegional centre	—	—	Monday / Tuesday0.1 c/L apart
KarrathaRegional centre	—	—	Thursday / Monday0.2 c/L apart
Port HedlandRegional centre	—	—	Tuesday / Saturday0.4 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 $87.90 on average in September 2026. In Oakford (rural) the same tank cost $7.14 less than in Perth. At AMPM Highway in Mount Melville, the cheapest station we ranked, it cost $31.86 less than at the state average.

Differences of the published averages, September 2026
Comparison	Cheaper	Dearer	A litre	A tank
Cheapest and dearest town	Oakford (rural)208.2 c/L	Drysdale River (rural)354.7 c/L	146.5	$87.90
Cheapest and dearest regional centre	Albany216.9 c/L	Broome257.5 c/L	40.6	$24.36
Cheapest town and Perth	Oakford (rural)208.2 c/L	Perth220.1 c/L	11.9	$7.14
Cheapest station and the state average	AMPM Highway175.9 c/L	Western Australia229.0 c/L	53.1	$31.86

Towns that moved most on August 2026, U91

Warmun rose most on August 2026, up 24.9 c/L to 336.1 c/L, and no town we ranked fell.

Towns that moved most on August 2026, U91
Town	Before	Month	Change
WarmunRose	311.2	336.1	+24.9
Bremer BayRose	212.4	236.6	+24.2
NarroginRose	199.5	223.0	+23.5
Jurien BayRose	208.8	230.6	+21.8
CollieRose	214.5	236.2	+21.7

Independents and the major brands, U91

Independent service stations averaged 228.9 c/L for U91 and the major brands 229.1 c/L, 0.2 c/L less at the independents; in Perth the gap was 8.7 c/L. Of the brands with five stations or more, Burk averaged least at 211.6 c/L and Mogas most at 318.5 c/L.

Station-day averages, September 2026
Where	Major brands	Independents	Difference	Stations
Western Australia	229.1	228.9	−0.2	—
Perth	221.8	213.1	−8.7	—
BurkIndependent	—	211.6	—	13
MetroIndependent	—	214.5	—	12
VibeIndependent	—	214.7	—	50
AtlasIndependent	—	214.8	—	17
UnitedMajor brand	218.6	—	—	32
7-ElevenMajor brand	220.0	—	—	55
EagleIndependent	—	222.4	—	5
LibertyIndependent	—	222.4	—	46
AstronIndependent	—	222.7	—	5
PetrogasIndependent	—	223.5	—	13
CaltexMajor brand	224.4	—	—	89
ChoiceIndependent	—	225.2	—	8
Reddy ExpressMajor brand	225.5	—	—	83
ShellMajor brand	226.8	—	—	43
AmpolMajor brand	228.6	—	—	165
BPMajor brand	238.1	—	—	190
IndependentIndependent	—	251.1	—	68
MogasIndependent	—	318.5	—	6

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

AMPM Highway in Mount Melville was the cheapest service station we ranked for U91 at 175.9 c/L, and Kunawarritji Store in Gibson Desert North the dearest at 450.0 c/L.

929 stations with a price on half the days or more, September 2026
Station	Place	Average
AMPM HighwayFuelTech	Mount Melville	175.9
Billabong RoadhouseIndependent	Meadow	195.0
Costco CasuarinaCostco	Casuarina	202.9
Costco Perth AirportCostco	Perth Airport	202.9
Vibe Kwinana OPTVibe	Kwinana Beach	206.8
Burk OakfordBurk	Oakford	208.1
Caltex Kwinana Truck StopCaltex	Kwinana Beach	208.4
Vibe Oakford TruckstopVibe	Oakford	208.4
Burk LandsdaleBurk	Landsdale	208.6
Atlas Fuel KwinanaAtlas	Kwinana Beach	208.7

Dearest service stations, U91

929 stations with a price on half the days or more, September 2026
Station	Place	Average
Kunawarritji StoreIndependent	Gibson Desert North	450.0
Yakanarra Community StoreIndependent	St George Ranges	410.0
Kalumburu MissionBP	Drysdale River	375.0
Wingellina StoreBP	Wingellina	374.0
Warburton RoadhouseBP	Warburton	374.0
Warakurna RoadhouseBP	Ngaanyatjarra-Giles	374.0
Wanarn StoreBP	—	374.0
Tjukurla StoreBP	Tjukurla	374.0
Tjukayirla RoadhouseBP	Lake Wells	374.0
Jameson StoreBP	—	374.0

Diesel against U91

Diesel cost 42.8 c/L more than U91 in Perth, against 40.9 c/L on August 2026. Among the towns, the gap was narrowest in Drysdale River (rural) at 7.5 c/L and widest in Wiluna at 61.2 c/L.

How much more diesel cost than U91, September 2026
Where	Diesel less U91	Month	Change
Perth	42.8	40.9	+1.9
Western Australia	44.0	43.0	+1.0
Rest of Western Australia	40.4	38.9	+1.5
Drysdale River (rural)Narrowest gap	7.5	—	—
Djarindjin–LombadinaNarrowest gap	10.8	—	—
Halls CreekNarrowest gap	17.5	—	—
BroomeNarrowest gap	21.5	—	—
Port HedlandNarrowest gap	22.1	—	—
WilunaWidest gap	61.2	—	—
OnslowWidest gap	60.0	—	—
West Pinjarra (rural)Widest gap	53.7	—	—
MeekatharraWidest gap	52.4	—	—
AnketellWidest gap	51.7	—	—

Crude oil and the dollar

Brent crude averaged US$114.2 a barrel in September 2026, against US$85.4 in June 2026.

Brent crude oil and the Australian dollar, September 2026 and the periods before
Period	Brent, US$ a barrel	US$ per A$	Brent, A$ a barrel	Brent, A$ c/L	Trading days
September 2026	114.2	0.7115	161.2	101.4	22
August 2026	91.1	0.7103	128.3	80.7	20
July 2026	83.8	0.6971	121.1	76.2	23
June 2026	85.4	0.7025	121.8	76.6	22

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 965 distinct stations with eligible input prices, including carried prices, over 85,729 station–fuel–days across published fuels. Our price records begin on 13 April 2026.

What the figures cover, September 2026
Coverage	Figure
Service stations listed	970
Stations with an eligible input price	965
Station–fuel–days counted (published fuels)	85,729
Days covered	1 September 2026 to 30 September 2026
Station-price records used here begin	13 April 2026
Towns ranked for U91187 left out: too few steady stations	83

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 period	Distinct stations	Station–fuel–days	Calendar days
U91, September 20261 to 30 Sept 2026	929	27,866	30
U91, August 20261 to 31 Aug 2026	932	28,862	31
DSL, September 20261 to 30 Sept 2026	655	19,605	30
DSL, August 20261 to 31 Aug 2026	661	20,402	31
P95, September 20261 to 30 Sept 2026	521	15,579	30
P95, August 20261 to 31 Aug 2026	524	16,159	31
P98, September 20261 to 30 Sept 2026	719	21,569	30
P98, August 20261 to 31 Aug 2026	726	22,398	31
LPG, September 20261 to 30 Sept 2026	37	1,110	30
LPG, August 20261 to 31 Aug 2026	37	1,147	31

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

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

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.
Saved edition
Saved 15 October 2026 at 9:36 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.
Data fingerprint
d02b62b7c7fc938dbf8c3eac39bb01f18de911d8455926a4adf16f542fc9e3bf

For media

In short
Perth reported prices averaged 220.1 c/L for U91 in September 2026, up 19.8 c/L on August 2026. Pinjarra was the cheapest town in Mandurah for U91 in September 2026 at 213.9 c/L, 6.2 c/L below Perth.
Credit line
Source: FuelRadar Australia, Western Australia fuel prices, September 2026, fuelradar.com.au/fuel-price-reports/wa/2026-09
Media enquiries
Email [email protected]. Figures, graphics and the PDF are free to use in news coverage with the credit line.

Western Australia fuel prices, September 2026

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About this edition

How we worked out these figures, and our sources

What the average measures

Which history this uses

Coverage and carry

Wholesale spreads

How we average

Towns and areas

Which prices count

Coverage

Wholesale, margins and the cost of a litre

Sources

About these prices

What this edition can establish

Not recorded

Saved edition

Data fingerprint

In short

Credit line

Media enquiries

This report

This report

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