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Cheapest Premium Diesel Fuel Prices around St Marys, SA Today
As of 12 May 2026, the cheapest Premium Diesel around St Marys, SA is 229.90 c/L at X Convenience Cross Road. Average across 23 stations within 5km of St Marys centre is 232.70 c/L – down 44.9 cents over the past two weeks.
Prices from South Australia Government, updated every 15 minutes.
Premium Diesel stations around St Marys
23 stations selling Premium Diesel, sorted by price.
Fuel prices by type
7 fuel types available around St Marys.
Frequently asked questions
Where is the cheapest Premium Diesel around St Marys?
The cheapest Premium Diesel around St Marys, SA is 229.90 cents per litre at X Convenience Cross Road, 542 Cross Road.
When is the best day to buy fuel in St Marys?
Based on the past 4 weeks, Mondays tend to have the cheapest Premium Diesel prices around St Marys, averaging 250.90 c/L. Tuesdays tend to be the most expensive at 268.40 c/L – a difference of 17.5 cents.
How many petrol stations are around St Marys?
FuelTrack tracks prices at 23 stations selling Premium Diesel around St Marys, SA. The area has 7 fuel types available, including LPG, E10, U91, U95.
What petrol brands are around St Marys?
There are 5 fuel brands around St Marys including Independent, U-Go, United, Liberty, Ampol. Compare prices across all brands to find the cheapest fuel.
Nearby suburbs
Suburbs near St Marys with Premium Diesel prices, sorted by distance.
Prices from South Australia Government. View all South Australia suburbs. Compare fuel prices across Australia.