What is the cheapest petrol price in St Marys today?

The cheapest unleaded petrol in St Marys is currently 185.90c per litre. Prices range from 185.90c to 189.90c across 6 stations we monitor in the area.

When is the best day to buy petrol in St Marys?

In NSW, petrol prices typically follow a weekly cycle. The best time to fill up is usually early in the week (Monday to Wednesday) when prices are at their lowest. Avoid filling up on Thursday or Friday when prices tend to peak.

How often are fuel prices updated in St Marys?

Petrolmate updates St Marys fuel prices in real-time using official government APIs and community data. Prices are refreshed multiple times throughout the day to ensure accuracy.

Is E10 cheaper than regular unleaded in St Marys?

Yes, E10 is typically 3-5 cents per litre cheaper than regular unleaded (ULP) in St Marys. E10 contains 10% ethanol and is suitable for most vehicles made after 2005. Check your vehicle manual for compatibility.

Live Petrol Prices in St Marys, Sydney – 6+ Local Stations

Live fuel prices from 6+ stations in St Marys, Sydney. Average: 187.7c/L

Last updated: 09:00 AM, 31 Jan 2026

Open Map View

187.7c

Average Price (ULP)

185.9c

Cheapest Price

Petrol Stations

4.0c

Price Range

St Marys Fuel Prices Today

Petrol prices in St Marys (Sydney area) currently range from 185.9c to 189.9c per litre for unleaded fuel, with motorists paying an average of 187.7c/L. We're tracking live prices from 6 service stations, which means you could save up to $2.00 on a 50L tank simply by choosing the right station. View all New South Wales prices for broader comparisons.

Fuel Types Available

Compare all fuel types in St Marys: Unleaded (ULP) from 185.9c/L, E10 Ethanol from 183.9c/L (save 2.0c/L), Premium 95 from 201.9c/L, Premium 98 from 207.5c/L. Each fuel type page shows the cheapest stations in the area, helping you find the best deal whether you need regular unleaded, premium fuel, or diesel.

Best Time to Fill Up

In New South Wales, petrol prices follow a weekly cycle typically peaking on Thursdays. Fill up Monday or Tuesday when prices are at their lowest to maximise savings. Check our Best Time to Fill Up guide for detailed advice.

Data Sources

Prices for St Marys are sourced from NSW FuelCheck and community-verified reports, updating continuously throughout the day. Compare prices by brand or view our full station directory for more options.

PetrolSMART. Smart Fuel Insights

Prices Dropping

Good news! Prices look set to drop around 26.2c over the next week. Worth holding off a few days if you can.

81% Forecast Accuracy

Our price predictions are highly accurate, verified across 3.4M forecasts using proper scoring methods.

Prices Coming Down

Good timing - prices are on the way down. Could be worth waiting a day or two for even better prices.

Cheapest Day: Monday

Historically, Monday tends to have the best prices around here. Worth keeping in mind for your next fill.

Might Be Worth Waiting

Prices could drop soon based on current trends. If you're not running on empty, might pay to wait a day or two.

PetrolSMART Price Intelligence

PetrolSMART Market Sentiment

78%

22%

Fill Now

Good Value

Fair

Wait

Check

78% of stations suggest waiting might save you money

Price Cycle Overview

Distribution of stations across cycle phases in St Marys

Dominant

Falling

63% conf

Low 0% (0)

Rising 48% (14)

High 0% (0)

Falling 52% (15)

Falling Phase Dominant

Prices dropping - might pay to wait a bit

7-Day Price Forecast

-26.2c

average expected change

forecasting
drop

stable

forecasting
rise

Prices Expected to Drop

Prices across St Marys are forecast to drop around 26.2c on average over the next week. If you can wait, you might save.

Best Day to Fill Up

Monday

Based on historical price patterns in St Marys, Monday tends to offer the best prices. Start of the week often brings lower prices as stations compete for customers.

Cheapest Petrol Prices in St Marys Right Now

Unleaded Petrol

Rank	Station	Brand	Suburb	Price	Updated
	7-Eleven St Marys	7-Eleven	St Marys	185.9c	Today, 9:00am
	BP St Marys South	BP	St Marys	185.9c	Today, 9:00am
	Metro St Marys	Metro	St Marys	187.5c	Today, 9:00am
4	BP St Marys (Forrester Road)	BP	St Marys	187.9c	Today, 9:00am
5	7-Eleven St Marys	7-Eleven	St Marys	188.9c	Today, 9:00am

Diesel

Rank	Station	Brand	Suburb	Price	Updated
	BP St Marys (Forrester Road)	BP	St Marys	171.9c	Today, 9:00am
	Shell Reddy Express St Marys	Reddy Express	St Marys	179.9c	Today, 9:00am

Ethanol 10%

Rank	Station	Brand	Suburb	Price	Updated
	7-Eleven St Marys	7-Eleven	St Marys	183.9c	Today, 9:00am
	Metro St Marys	Metro	St Marys	185.5c	Today, 9:00am
	BP St Marys (Forrester Road)	BP	St Marys	185.9c	Today, 9:00am
4	BP St Marys	BP	St Marys	185.9c	Today, 9:00am
5	7-Eleven St Marys	7-Eleven	St Marys	186.9c	Today, 9:00am

Premium Unleaded 95

Station	Brand	Suburb	Price	Updated
BP St Marys South	BP	St Marys	201.9c	Today, 9:00am
7-Eleven St Marys	7-Eleven	St Marys	203.9c	Today, 9:00am
BP St Marys	BP	St Marys	204.9c	Today, 9:00am

Premium Unleaded 98

Rank	Station	Brand	Suburb	Price	Updated
	Metro St Marys	Metro	St Marys	207.5c	Today, 9:00am
	7-Eleven St Marys	7-Eleven	St Marys	207.5c	Today, 9:00am
	BP St Marys South	BP	St Marys	209.9c	Today, 9:00am
4	BP St Marys (Forrester Road)	BP	St Marys	209.9c	Today, 9:00am
5	7-Eleven St Marys	7-Eleven	St Marys	212.9c	Today, 9:00am

Premium Diesel

Rank	Station	Brand	Suburb	Price	Updated
	Metro St Marys	Metro	St Marys	161.5c	Today, 9:00am
	7-Eleven St Marys	7-Eleven	St Marys	171.9c	Today, 9:00am
	BP St Marys	BP	St Marys	173.9c	Today, 9:00am
4	BP St Marys (Forrester Road)	BP	St Marys	173.9c	Today, 9:00am
5	7-Eleven St Marys	7-Eleven	St Marys	174.9c	Today, 9:00am

LPG/Autogas

Rank	Station	Brand	Suburb	Price	Updated
	Metro St Marys	Metro	St Marys	99.9c	Today, 9:00am

● Cheapest Suburbs for Petrol in St Marys

Find the best value by suburb - average unleaded petrol prices:

Suburb	Stations	Average Price	Cheapest Price
St Marys	6 stations	187.7c	185.9c

✓ Cheapest Petrol Stations in St Marys

Save money at these stations with the lowest ULP prices. Prices shown for all available fuel types:

Station	Address	Brand	ULP	E10	Diesel	P95	P98	Updated
7-Eleven St Marys	Corner Mamre Road & Wilson Street, St Marys NSW 2760	7-Eleven	185.9c	183.9c	-	-	207.5c	Today, 9:00am
BP St Marys South	12 Gallipoli St, St Marys NSW 2760	BP	185.9c	-	-	201.9c	209.9c	Today, 9:00am
Metro St Marys	516-526 Great Western Hwy, St Marys NSW 2760	Metro	187.5c	185.5c	-	-	207.5c	Today, 9:00am
BP St Marys (Forrester Road)	120-128 Forrester Road, St Marys NSW 2760	BP	187.9c	185.9c	171.9c	-	209.9c	Today, 9:00am
7-Eleven St Marys	Corner Forrester Road & Christie Street, St Marys NSW 2760	7-Eleven	188.9c	186.9c	-	203.9c	212.9c	Today, 9:00am
Shell Reddy Express St Marys	61-63 Christie St, St Marys NSW 2760	Reddy Express	189.9c	187.9c	179.9c	-	216.2c	Today, 9:00am

⚠ Most Expensive Petrol Stations in St Marys

Avoid overpaying - these stations have the highest ULP prices:

Station	Address	Brand	ULP	E10	Diesel	P95	P98	Updated
Shell Reddy Express St Marys	61-63 Christie St, St Marys NSW 2760	Reddy Express	189.9c	187.9c	179.9c	-	216.2c	Today, 9:00am
7-Eleven St Marys	Corner Forrester Road & Christie Street, St Marys NSW 2760	7-Eleven	188.9c	186.9c	-	203.9c	212.9c	Today, 9:00am
BP St Marys (Forrester Road)	120-128 Forrester Road, St Marys NSW 2760	BP	187.9c	185.9c	171.9c	-	209.9c	Today, 9:00am
Metro St Marys	516-526 Great Western Hwy, St Marys NSW 2760	Metro	187.5c	185.5c	-	-	207.5c	Today, 9:00am
7-Eleven St Marys	Corner Mamre Road & Wilson Street, St Marys NSW 2760	7-Eleven	185.9c	183.9c	-	-	207.5c	Today, 9:00am
BP St Marys South	12 Gallipoli St, St Marys NSW 2760	BP	185.9c	-	-	201.9c	209.9c	Today, 9:00am

Savings Tip: Price difference between cheapest (185.9c/L) and most expensive (189.9c/L): 4.0c per litre. On a 50L tank, choosing the cheapest station saves you $2.00!

▸ Nearby Areas in NSW

Compare fuel prices in these nearby locations:

▸ View Interactive Map & Live Prices for St Marys →

Nearby Suburbs in Sydney

Randwick Kingsford Mascot Kensington Bondi Bondi Junction Chippendale Coogee Maroubra Redfern

About Petrol Prices in St Marys

St Marys has 6 petrol stations. Right now, ULP (unleaded petrol) prices in St Marys range from 185.9c/L to 189.9c/L (a difference of 4.0c/L).

Real-time data updated continuously from official government sources and community reports. We track live prices from major fuel brands including Ampol, Shell, BP, 7-Eleven, Coles Express, and independent service stations. The current average price is 187.7c/L (last updated: 09:00 AM, 31 Jan 2026).

How to Save Money on Fuel in St Marys

Compare before you fill: Use Petrolmate to find the cheapest stations - right now you can save up to 4.0c per litre in St Marys
Time it right: In NSW, prices typically peak on Thursdays and are lowest on Mondays or Tuesdays
Shop around suburbs: Prices can vary significantly between different areas
Consider E10: E10 is currently 2.0c/L cheaper than regular unleaded (if your vehicle supports it) - that's $1.00 savings on a 50L tank
Use fuel discounts: Supermarket fuel vouchers (Woolworths, Coles) and BP rewards can save 4c or more per litre

🌏 Compare Petrol Prices in Other Cities

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