Suburb fuel prices
Cheap Petrol & Diesel in St Marys South Australia 5042
0.7c above 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 21 min ago AEST · sourced from SA Fuel Pricing Information Scheme
WAIT
Unleaded 91 in St Marys is dearer than the South Australia average
St Marys sits 0.7c above the South Australia average. St Marys is 8.3c/L under its 30-day average right now — near the bottom of the cycle.
How it compares
- South Australia state avg163.9c/L+0.7c/L
- National avg165.9c/L-1.3c/L
- Wholesale (TGP)154.1c/L+10.5c/L
Top stations
Cheapest Unleaded 91 stations in St Marys
Sorted by current Unleaded 91 price. Tap a station for grades, directions and price age.
U-Go St Marys
Cheapest1.3 km away · 1129-1131 South Rd & Southern Av
149.3 c/L
-15.3 vs avg
OTR St Marys
1.0 km away · 1181 South Rd
150.9 c/L
-13.7 vs avg
OTR Pasadena
1.3 km away · 14 Fiveash Dr & Painter St
151.9 c/L
-12.7 vs avg
OTR Clarence Park
4.6 km away · 340-346 Goodwood Rd & Cross Rd
97.9 c/L
-66.7 vs avg
OTR Harbourtown Drive Thru
8.7 km away · Tapleys Hill Rd & West Beach Rd
97.9 c/L
-66.7 vs avg
Liberty Camden Park
6.3 km away · Cnr Morphett Rd and Mooringe Ave Road
99.5 c/L
-65.1 vs avg
Showing 6 of 70 stations.
30-day spread · Unleaded 91
St Marys Unleaded 91 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
Cheapest Unleaded 91 right now
- 1OTR Clarence ParkOn The Run (OTR) · 4.6 km away97.9 c/L
- 2OTR Harbourtown Drive ThruOn The Run (OTR) · 8.7 km away97.9 c/L
- 3Liberty Camden ParkLiberty · 6.3 km away99.5 c/L
- 4Solo MarionSolo · 1.9 km away99.5 c/L
- 5United Somerton ParkUnited · 5.4 km away99.5 c/L
Source: Reported Unleaded 91 pump prices across St Marys.
7-day outlook
St Marys 7-day Unleaded 91 outlook
St Marys prices follow the Adelaide cycle, so this outlook takes the Adelaide Unleaded 91 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
All fuel types
Fuel prices in St Marys by type
Low, average and high for each fuel type from the 3 stations tracked here.
| Fuel | Low | Avg | High | Stations | Cheapest at |
|---|---|---|---|---|---|
| U91 | 149.3c | 150.7c | 151.9c | 3 | U-Go St Marys |
| P95 | 163.3c | 167.0c | 169.4c | 3 | U-Go St Marys |
| P98 | 171.3c | 176.0c | 178.9c | 3 | U-Go St Marys |
| PDSL | 178.3c | 179.4c | 179.9c | 3 | U-Go St Marys |
Nearby suburbs
Suburbs near St Marys
How St Marys compares to neighbouring areas — cheapest first, delta vs the St Marys average.
- DaDaw ParkCheapest
150.4c
-14.2vs St Marys - CoColonel Light Gardens
150.4c
-14.2vs St Marys - CuCumberland Park
150.4c
-14.2vs St Marys - PaPanorama
150.4c
-14.2vs St Marys - WeWestbourne Park
150.4c
-14.2vs St Marys - ToTonsley
150.7c
-13.9vs St Marys - ClClovelly Park
150.7c
-13.9vs St Marys - FlFlinders University
150.7c
-13.9vs St Marys - PaPasadena
150.7c
-13.9vs St Marys - BeBedford Park
150.7c
-13.9vs St Marys - StSt MarysYou
164.6c
0.0vs St Marys
At a glance
St Marys fuel prices at a glance
- Cheapest Unleaded 91
- 149.3 c/L
- Suburb average
- 164.6 c/L
- Price range
- 30.6c spread
- Stations tracked
- 3
- Brands
- 2
- Postcode
- 5042
- Last updated
- 24 June 2026, 3:07 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 Unleaded 91 map.
St Marys snapshot
Live Unleaded 91 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 0.7c above 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 U91 in St Marys is currently at U-Go St Marys for 149.3 c/L.
FuelRadar app
Keep St Marys fuel prices in your pocket
Track St Marys prices, watch the local cycle and get an alert before the next jump — from your phone.
