Suburb fuel prices
Cheap Premium Diesel in St Johns South Australia 5373
1.3c above the South Australia average — St Johns is 18.7c/L under its 30-day average right now — near the bottom of the cycle.
Prices as of 8 min ago AEST · sourced from SA Fuel Pricing Information Scheme
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P. Diesel in St Johns is dearer than the South Australia average
St Johns sits 1.3c above the South Australia average. St Johns is 18.7c/L under its 30-day average right now — near the bottom of the cycle.
How it compares
- South Australia state avg182.1c/L+1.3c/L
- National avg185.8c/L-2.4c/L
- Wholesale (TGP)170.9c/L+12.5c/L
Top stations
Cheapest P. Diesel stations in St Johns
Sorted by current P. Diesel price. Tap a station for grades, directions and price age.
30-day spread · P. Diesel
St Johns P. Diesel cycle
St Johns is currently 18.7c/L below its 30-day average — a relatively good time to fill up.
30-day low
181.9c/L
Lowest point in the local spread
30-day average
202.0c/L
30-day high
222.9c/L
Today's average
183.3c/L
Cheapest P. Diesel right now
Source: Reported P. Diesel pump prices across St Johns.
7-day outlook
St Johns 7-day P. Diesel outlook
St Johns prices follow the Adelaide cycle, so this outlook takes the Adelaide P. Diesel 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 falling phase of its current cycle.
St Johns today (est.)
183.5c/L
Adelaide 181.3c/L · +2.2c/L local
Predicted in 7 days
210.7c/L
7-day range
181.0 – 210.9c/L
Nearby suburbs
Suburbs near St Johns
How St Johns compares to neighbouring areas — cheapest first, delta vs the St Johns average.
At a glance
St Johns fuel prices at a glance
- Cheapest P. Diesel
- 181.9 c/L
- Suburb average
- 183.4 c/L
- Price range
- 3.0c spread
- Stations tracked
- 2
- Brands
- 2
- Postcode
- 5373
- Last updated
- 25 June 2026, 1:07 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 P. Diesel map.
St Johns snapshot
Live P. Diesel prices in St Johns
How it compares
St Johns is currently 1.3c above the South Australia state average of 182.1c. 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 181.9c), Fords (from 181.9c), Hamilton (from 181.9c), Koonunga (from 181.9c) or Kapunda (from 181.9c) 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 Premium Diesel in St Johns is currently at OTR Kapunda for 181.9 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.
