Suburb fuel prices
Cheap Unleaded 91 in St Johns South Australia 5373
6.1c below the South Australia average — St Johns is 10.6c/L under its 30-day average right now — near the bottom of the cycle.
Prices as of 24 min ago AEST · sourced from SA Fuel Pricing Information Scheme
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U91 in St Johns is cheaper than the South Australia average
St Johns sits 6.1c below the South Australia average. St Johns is 10.6c/L under its 30-day average right now — near the bottom of the cycle.
How it compares
- South Australia state avg163c/L-6.1c/L
- National avg165.5c/L-8.6c/L
- Wholesale (TGP)154.1c/L+2.8c/L
Top stations
Cheapest U91 stations in St Johns
Sorted by current U91 price. Tap a station for grades, directions and price age.
30-day spread · U91
St Johns U91 cycle
St Johns is currently 10.6c/L below its 30-day average — a relatively good time to fill up.
30-day low
155.9c/L
Lowest point in the local spread
30-day average
167.4c/L
30-day high
181.9c/L
Today's average
156.8c/L
Cheapest U91 right now
Source: Reported U91 pump prices across St Johns.
7-day outlook
St Johns 7-day U91 outlook
St Johns prices follow the Adelaide cycle, so this outlook takes the Adelaide U91 forecast and adjusts it to St Johns'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 Johns today (est.)
158.8c/L
Adelaide 151.7c/L · +7.1c/L local
Predicted in 7 days
163.9c/L
7-day range
152.3 – 169.4c/L
Nearby suburbs
Suburbs near St Johns
How St Johns compares to neighbouring areas — cheapest first, delta vs the St Johns average.
- EbEbenezerCheapest
155.9c
-1.0vs St Johns - StSt JohnsYou
156.9c
0.0vs St Johns - BaBagot Well
156.9c
0.0vs St Johns - FoFords
156.9c
0.0vs St Johns - HaHamilton
156.9c
0.0vs St Johns - KoKoonunga
156.9c
0.0vs St Johns - KaKapunda
156.9c
0.0vs St Johns - BeBethel
156.9c
0.0vs St Johns - AlAllendale North
156.9c
0.0vs St Johns - NaNain
156.9c
0.0vs St Johns - GrGreenock
156.9c
0.0vs St Johns
At a glance
St Johns fuel prices at a glance
- Cheapest U91
- 155.9 c/L
- Suburb average
- 156.9 c/L
- Price range
- 2.0c spread
- Stations tracked
- 2
- Brands
- 2
- Postcode
- 5373
- Last updated
- 25 June 2026, 1:37 am AEST
Explore the area
Browse fuel prices around St Johns
Step up to the city and state, compare neighbouring suburbs, or open the live U91 map.
St Johns snapshot
Live U91 prices in St Johns
How it compares
St Johns is currently 6.1c below the South Australia state average of 163.0c. Open the live fuel map to see how individual stations spread within St Johns.
Compare neighbouring suburbs
Cheaper fuel may be nearby — compare Bagot Well (from 155.9c), Fords (from 155.9c), Hamilton (from 155.9c), Koonunga (from 155.9c) or Kapunda (from 155.9c) before planning a fill-up.
Brands operating here
2 fuel brands operate stations in St Johns, including On The Run (OTR) and Mobil. Brand loyalty programs and discount apps can shift the cheapest pump by 4–6c/L on any given day.
Frequently asked
St Johns fuel questions
The cheapest Unleaded 91 in St Johns is currently at OTR Kapunda for 155.9 c/L.
FuelRadar app
Keep St Johns fuel prices in your pocket
Track St Johns prices, watch the local cycle and get an alert before the next jump — from your phone.
