Suburb fuel prices

Cheap Unleaded 91 in St Marys South Australia 5042

13.2c below the South Australia average — St Marys is 8.3c/L under its 30-day average right now — near the bottom of the cycle.

Prices as of 13 min ago AEST · sourced from SA Fuel Pricing Information Scheme

SOUTH AUSTRALIA state averageAll fuelsU91P. DieselP95P98LPG
St Marys · U91Below the state avg

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U91 in St Marys is cheaper than the South Australia average

St Marys sits 13.2c below the South Australia average. St Marys is 8.3c/L under its 30-day average right now — near the bottom of the cycle.

SOUTH AUSTRALIA average

How it compares

  • South Australia state avg163.9c/L-13.2c/L
  • National avg165.9c/L-15.2c/L
  • Wholesale (TGP)154.1c/L-3.4c/L

Top stations

Cheapest U91 stations in St Marys

Sorted by current U91 price. Tap a station for grades, directions and price age.

  1. U-Go St Marys

    U-Go St Marys

    Cheapest

    1.3 km away · 1129-1131 South Rd & Southern Av

    149.3 c/L

    -1.4 vs avg

  2. OTR St Marys

    OTR St Marys

    1.0 km away · 1181 South Rd

    150.9 c/L

    +0.2 vs avg

  3. OTR Pasadena

    OTR Pasadena

    1.3 km away · 14 Fiveash Dr & Painter St

    151.9 c/L

    +1.2 vs avg

  4. Liberty Clarence Gardens

    Liberty Clarence Gardens

    3.9 km away · 837 South Rd

    149.3 c/L

    -1.4 vs avg

  5. Solo Marion

    Solo Marion

    1.9 km away · 734 Marion Road

    149.3 c/L

    -1.4 vs avg

  6. United Melrose Park

    United Melrose Park

    2.7 km away · 993-997 South Road

    149.3 c/L

    -1.4 vs avg

Showing 6 of 70 stations.

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30-day spread · U91

St Marys U91 cycle

St Marys is currently 8.3c/L below its 30-day average — a relatively good time to fill up.

30-day low

149.3c/L

Lowest point in the local spread

30-day average

159.7c/L

30-day high

175.9c/L

Today's average

151.4c/L

149.0162.5176.026 May7 June23 June
Daily averageMin–max spread across St Marys stations

Cheapest U91 right now

  1. 1U-Go St MarysU-Go · 1.3 km away149.3 c/L0.6
  2. 2Liberty Clarence GardensLiberty · 3.9 km away149.3 c/L0.6
  3. 3Solo MarionSolo · 1.9 km away149.3 c/L
  4. 4United Melrose ParkUnited · 2.7 km away149.3 c/L0.6
  5. 5AMPM Mile EndAM/PM · 9.1 km away149.5 c/L4.0

Source: Reported U91 pump prices across St Marys.

7-day outlook

St Marys 7-day U91 outlook

Rising · +8.9c/L over 7 days

St Marys prices follow the Adelaide cycle, so this outlook takes the Adelaide U91 forecast and adjusts it to St Marys's own price level using 90 days of local history. You can see the Adelaide benchmark alongside the local estimate below.

Adelaide is in the stable phase of its current cycle.

St Marys today (est.)

151.0c/L

Adelaide 153.9c/L · -2.9c/L local

Predicted in 7 days

160.1c/L

7-day range

148.7 – 166.3c/L

148.0157.5167.0WedThuFriSatSunMonTue
Predicted price90% confidence band
See full 30-day forecastHow accurate is this?

All fuel types

Fuel prices in St Marys by type

Low, average and high for each fuel type from the 3 stations tracked here.

FuelLowAvgHighStationsCheapest at
U91149.3c150.7c151.9c3U-Go St Marys
P95163.3c167.0c169.4c3U-Go St Marys
P98171.3c176.0c178.9c3U-Go St Marys
PDSL178.3c179.4c179.9c3U-Go St Marys

Nearby suburbs

Suburbs near St Marys

How St Marys compares to neighbouring areas — cheapest first, delta vs the St Marys average.

  1. Da
    Daw ParkCheapest

    150.4c

    -0.3vs St Marys
  2. Co
    Colonel Light Gardens

    150.4c

    -0.3vs St Marys
  3. Cu
    Cumberland Park

    150.4c

    -0.3vs St Marys
  4. Pa
    Panorama

    150.4c

    -0.3vs St Marys
  5. We
    Westbourne Park

    150.4c

    -0.3vs St Marys
  6. St
    St MarysYou

    150.7c

    0.0vs St Marys
  7. To
    Tonsley

    150.7c

    0.0vs St Marys
  8. Cl
    Clovelly Park

    150.7c

    0.0vs St Marys
  9. Fl
    Flinders University

    150.7c

    0.0vs St Marys
  10. Pa
    Pasadena

    150.7c

    0.0vs St Marys
  11. Be
    Bedford Park

    150.7c

    0.0vs St Marys

At a glance

St Marys fuel prices at a glance

Cheapest U91
149.3 c/L
Suburb average
150.7 c/L
Price range
2.6c spread
Stations tracked
3
Brands
2
Postcode
5042
Last updated
24 June 2026, 4:37 am AEST

Explore the area

Browse fuel prices around St Marys

Step up to the city and state, compare neighbouring suburbs, or open the live U91 map.

St Marys snapshot

Live U91 prices in St Marys

Today's prices

In St Marys, South Australia, the cheapest U91 today is 149.3c with an area average of 150.7c across 3 listed stations. Other fuels tracked in this suburb include P95 from 163.3c, P98 from 171.3c and PDSL from 178.3c.

How it compares

St Marys is currently 13.2c below the South Australia state average of 163.9c. Open the live fuel map to see how individual stations spread within St Marys.

Compare neighbouring suburbs

Cheaper fuel may be nearby — compare Tonsley (from 149.3c), Clovelly Park (from 149.3c), Flinders University (from 149.3c), Pasadena (from 149.3c) or Bedford Park (from 149.3c) before planning a fill-up.

Brands operating here

2 fuel brands operate stations in St Marys, including On The Run (OTR) and U-Go. Brand loyalty programs and discount apps can shift the cheapest pump by 4–6c/L on any given day.

Frequently asked

St Marys fuel questions

The cheapest Unleaded 91 in St Marys is currently at U-Go St Marys for 149.3 c/L.

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