What is the cheapest petrol price in Underdale today?

The cheapest unleaded petrol in Underdale is currently 173.90c per litre. Prices range from 173.90c to 173.90c across 1 stations we monitor in the area.

When is the best day to buy petrol in Underdale?

In SA, 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 Underdale?

Petrolmate updates Underdale 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 Underdale?

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

Find Cheap Petrol in Underdale, South Australia

Compare fuel prices from 1+ stations in Underdale. Average: 173.9c/L

Last updated: 12:49 AM, 30 Jan 2026

Open Map View

173.9c

Average Price (ULP)

173.9c

Cheapest Price

Petrol Stations

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Price Range

Underdale Fuel Prices Today

Petrol prices in Underdale currently range from 173.9c to 173.9c per litre for unleaded fuel, with motorists paying an average of 173.9c/L. We're tracking live prices from 1 service stations, which means you could save up to $0.00 on a 50L tank simply by choosing the right station. View all South Australia prices for broader comparisons.

Fuel Types Available

Compare all fuel types in Underdale: Unleaded (ULP) from 173.9c/L, Premium 95 from 155.9c/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

South Australian prices are typically lowest Monday to Wednesday. Avoid filling up on weekends when prices tend to be higher. Check our Best Time to Fill Up guide for detailed advice.

Data Sources

Prices for Underdale are sourced from SA Fuel Pricing and community-verified reports, updating continuously throughout the day. Compare prices by brand or view our full station directory for more options.

Petrol Price Trends in Underdale

30-Day Price History

Average (30d) 175.2c

Lowest 173.9c

Highest 179.9c

Volatility Medium

Average (30d) 154.4c

Lowest 151.9c

Highest 157.9c

Volatility Medium

Price Cycle in SA

South Australia shows moderate price cycling with mid-week peaks.

Mon

Best

Tue

Best

Wed

Avoid

Thu

Avoid

Fri

Sat

Sun

Start-of-week refueling (Monday/Tuesday) offers the best value in South Australia.

PetrolSMART. Smart Fuel Insights

Prices Holding Steady

Prices are pretty stable at the moment. Fill up whenever suits you best.

77% Forecast Accuracy

Our price predictions are reliable, verified across 2.6M forecasts using proper scoring methods.

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.

Best Day: Tuesday

Lowest prices on Tuesday in Underdale.

PetrolSMART Price Intelligence

PetrolSMART Market Sentiment

25%

50%

25%

Fill Now

Good Value

Fair

Wait

Check

50% of stations suggest waiting might save you money

7-Day Price Forecast

-0.3c

average expected change

forecasting
drop

stable

forecasting
rise

Prices Expected to Hold Steady

Prices across Underdale are expected to remain relatively stable over the next week. Fill up when convenient.

Best Day to Fill Up

Monday

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

Cheapest Petrol Prices in Underdale Right Now

Unleaded Petrol

Rank	Station	Brand	Suburb	Price	Updated
	OTR Underdale	Independent	Underdale	173.9c	Today, 12:49am

Diesel

Rank	Station	Brand	Suburb	Price	Updated
	OTR Underdale	Independent	Underdale	171.9c	Today, 12:49am

Premium Unleaded 95

Rank	Station	Brand	Suburb	Price	Updated
	OTR Underdale	Independent	Underdale	155.9c	Today, 12:49am

● Cheapest Suburbs for Petrol in Underdale

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

Suburb	Stations	Average Price	Cheapest Price

✓ Cheapest Petrol Stations in Underdale

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
OTR Underdale	282 Henley Beach Rd & Holbrooks Rd	Independent	173.9c	-	171.9c	155.9c	-	Today, 12:49am

⚠ Most Expensive Petrol Stations in Underdale

Avoid overpaying - these stations have the highest ULP prices:

Station	Address	Brand	ULP	E10	Diesel	P95	P98	Updated
OTR Underdale	282 Henley Beach Rd & Holbrooks Rd	Independent	173.9c	-	171.9c	155.9c	-	Today, 12:49am

Savings Tip: Price difference between cheapest (173.9c/L) and most expensive (173.9c/L): 0.0c per litre. On a 50L tank, choosing the cheapest station saves you $0.00!

▸ Nearby Areas in SA

Compare fuel prices in these nearby locations:

▸ View Interactive Map & Live Prices for Underdale →

Other Suburbs in South Australia

Mount Gambier Port Augusta Port Lincoln Clare Coffin Bay Murray Bridge Waikerie Golden Grove Hawker Millicent Port Pirie Renmark Victor Harbor Whyalla

About Petrol Prices in Underdale

Underdale has 1 petrol stations. Right now, ULP (unleaded petrol) prices in Underdale range from 173.9c/L to 173.9c/L (a difference of 0.0c/L).

Data sourced from official government sources and community price reports, updated throughout the day. 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 173.9c/L (last updated: 12:49 AM, 30 Jan 2026).

How to Save Money on Fuel in Underdale

Compare before you fill: Use Petrolmate to find the cheapest stations - right now you can save up to 0.0c per litre in Underdale
Time it right: In South Australia, fill up early in the week (Monday-Wednesday) when prices are typically lower
Shop around suburbs: Prices can vary significantly between different areas
Consider alternative fuels: E10 is often cheaper than regular unleaded - check if your vehicle supports it
Use fuel discounts: Supermarket fuel vouchers (Woolworths, Coles) and BP rewards can save 4c or more per litre

🌏 Compare Petrol Prices in Other Cities

Find cheap fuel prices in other major cities across Australia and New Zealand:

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