Unleaded 91 Prices Across Australia

The national average unleaded 91 price in Australia is 185.9 cents per litre as of 15 July 2026, based on 9,080 stations tracked twice daily via official government APIs (NSW FuelCheck, QLD Fuel API, SA Informed Sources, VIC Fair Fuel, WA FuelWatch, NT MyFuel, TAS FuelCheck) plus community-verified sources for ACT and NZ. Prices range from 147.5c/L (cheapest) to 385.0c/L (most expensive), a 237.5c spread.

Currently, Unleaded 91 is available at 9,080 service stations across 24 Australian states and territories. Prices range from 147.5c to 385.0c per litre, with a national average of 185.9c/L. The 237.5c/L price spread means savvy motorists can save up to $118.75 on a 50L tank by shopping around. South Australia offers the cheapest ULP prices (averaging 170.9c/L), while Northern Territory is 59.6c/L higher at 230.5c/L. Among major retailers, Burk consistently offers competitive ULP pricing, averaging 156.1c/L across their 20 stations.

Last updated: 04:23 PM, 15 Jul 2026

5 cheapest unleaded 91 stations in Australia right now

#	Station	Suburb	Unleaded 91
1	Shell Reddy Express Melton Hwy	Taylors Lakes, VIC	147.5c
2	24xpress Taylors Lakes	Taylors Lakes, VIC	147.5c
3	Liberty Sydenham	Sydenham, VIC	149.5c
4	Vibe Kwinana Town Centre	Kwinana Town Centre, WA	149.9c
5	LMCT+ Preston - (Members Only)	Preston, VIC	149.9c

Find unleaded 91 near me right now →

185.9c

Average Price

147.5c

Cheapest Price

9,080+

Stations

237.5c

Price Range

PetrolSMART. Smart Fuel Insights

Prices Dropping

Good news - prices look set to drop around 6.1c on average over the next week.

154 Price Drops Found

We've spotted 154 servos with recent price drops, currently cheaper than their local area average.

Cheapest Day: Wednesday

Looking at the data, Wednesday tends to have the best prices. Worth planning your fill around if you can.

PetrolSMART Price Intelligence

154

Price Drops
in last 24h

PetrolSMART Market Sentiment

97%

Fill Now

Good Value

Fair

Wait

Check

Check individual station prices in Unleaded 91

Price Cycle Overview

Distribution of stations across cycle phases in Unleaded 91

Dominant

Rising

9% conf

Low 0% (46)

Rising 76% (14646)

High 0% (62)

Falling 23% (4481)

Rising Phase Dominant

Prices climbing - fill up soon to save

7-Day Price Forecast

-6.1c

average expected change

308

forecasting
drop

8905

stable

forecasting
rise

Prices Expected to Drop

Prices across Unleaded 91 are forecast to drop around 6.1c on average over the next week. If you can wait, you might save.

Best Day to Fill Up

Wednesday

Based on historical price patterns in Unleaded 91, Wednesday tends to offer the best prices. Midweek can be a sweet spot before weekend price hikes.

Unleaded 91 Prices by State

State	Average	Cheapest	Highest	Stations
South Australia	170.9c	154.7c	300.0c	659
Victoria	171.1c	147.5c	350.0c	1,946
New South Wales	173.9c	152.9c	279.4c	1,866
Queensland	176.0c	152.9c	340.0c	1,671
Australian Capital Territory	177.1c	162.7c	189.9c	61
Tasmania	177.4c	153.5c	298.9c	281
Western Australia	184.5c	149.9c	380.0c	1,170
Northern Territory	230.5c	169.3c	385.0c	190

Cheapest Unleaded 91 Stations

#	Station	Brand	Suburb	State	Price
1	Shell Reddy Express Melton Hwy	Shell	Taylors Lakes	VIC	147.5c
2	24xpress Taylors Lakes	Independent	Taylors Lakes	VIC	147.5c
3	Liberty Sydenham	Liberty	Sydenham	VIC	149.5c
4	Vibe Kwinana Town Centre	Vibe	Kwinana Town Centre	WA	149.9c
5	LMCT+ Preston - (Members Only)	LMCT+	Preston	VIC	149.9c
6	Burk Ballarat North	Burk	Ballarat North	VIC	151.3c
7	Burk Kingsville	Burk	Kingsville	VIC	151.3c
8	Burk Kingsville	Burk	Kingsville	VIC	151.3c
9	Burk Oakford	Burk	Oakford	WA	152.3c
10	APCO Strathdale	APCO	Strathdale	VIC	152.3c
11	Burk Bendigo	Burk	Epsom	VIC	152.3c
12	Liberty Epsom	Liberty	Epsom	VIC	152.3c
13	APCO White Hills	APCO	White Hills	VIC	152.3c
14	APCO White Hills	APCO	White Hills	VIC	152.3c
15	Vibe Oakford Truckstop	Vibe	Oakford	WA	152.5c

Unleaded 91 Prices by Brand

Brand	Average Price	Cheapest	Stations
Burk	156.1c	151.3c	20
Speedway	160.2c	156.5c	44
APCO	161.5c	152.3c	32
Vibe	162.2c	149.9c	57
Costco	162.5c	152.7c	9
Solo	162.9c	159.5c	39
Atlas	163.2c	152.9c	29
Pearl Energy	163.6c	152.9c	83
Budget	163.6c	156.8c	27
X Convenience	164.1c	159.5c	50
Arko Energy	164.4c	153.5c	6
Metro	165.8c	152.9c	294

About Unleaded 91

Standard unleaded petrol with 91 RON (Research Octane Number). The most common and affordable fuel option, suitable for most passenger vehicles manufactured after 1986.

Suitable for: Most passenger cars, SUVs, and light vehicles manufactured after 1986

Octane Rating: 91 RON

Complete Guide to Unleaded 91 in Australia

Overview

Unleaded 91 (ULP) is Australia's most widely used fuel, powering the majority of passenger vehicles on our roads. With a Research Octane Number of 91, it provides reliable performance for everyday driving without the added cost of premium alternatives. Every service station in Australia stocks ULP, making it the most accessible fuel choice for motorists.

Who Should Use Unleaded 91?

ULP is the right choice if your vehicle's manufacturer recommends 91 RON or higher. This includes most Toyota Corollas, Mazda 3s, Hyundai i30s, Kia Ceratos, and similar family vehicles. Check the fuel flap sticker or your owner's manual for the minimum octane requirement. If it says "91 RON minimum", ULP is your most economical option and using premium fuels will not provide any measurable performance or efficiency benefit.

Buying Tips for Australian Motorists

In Australia's east coast cities (Sydney, Melbourne, Brisbane, Adelaide), ULP prices follow predictable weekly or fortnightly cycles. Prices tend to be cheapest midweek (Tuesday to Thursday) and spike on weekends. In Perth, the cycle runs roughly monthly. By timing your fill-ups to the bottom of the cycle, you can save 15 to 30 cents per litre compared to peak pricing. Regional areas typically have steadier prices but may cost more due to transport margins.

Fuel Efficiency and Economy

A typical Australian passenger car achieves 7 to 10 litres per 100 kilometres on ULP. To maximise fuel economy, maintain correct tyre pressure (underinflated tyres increase consumption by up to 3%), avoid aggressive acceleration, and remove unnecessary roof racks or heavy items from the boot. Air conditioning in city driving can increase consumption by 10% or more, so consider windows down at lower speeds.

Frequently Asked Questions About Unleaded 91

Can I use E10 instead of ULP to save money?

Yes, most vehicles manufactured after 2005 can safely use E10. It is typically 3 to 5 cents per litre cheaper than ULP, though it contains slightly less energy so fuel economy may drop by 2 to 3 percent. Check your owner's manual or the fuel flap sticker for E10 compatibility before switching.

Will using Premium 95 or 98 in a ULP car improve performance?

No. If your engine is designed for 91 RON, using higher octane fuel will not improve performance, fuel economy, or engine longevity. You would simply be paying more for the same result. Higher octane only benefits engines with higher compression ratios that specifically require it.

Why do ULP prices vary so much between stations?

ULP prices in Australian cities follow pricing cycles driven by wholesale costs and competitive dynamics between major retailers. At the bottom of a cycle, intense competition drives prices down. As the cycle peaks, retailers restore margins. Location, brand, and proximity to competitors also influence individual station pricing. Price differences of 30 to 50 cents per litre between stations are common during cycle peaks.

How long can ULP sit in my tank before going stale?

Modern ULP with its standard additives remains usable for about three to six months in a sealed tank. If you drive infrequently, try to keep your tank at least half full to reduce condensation. For long-term storage exceeding three months, consider a fuel stabiliser additive.