SA Fuel Prices – Week of 8 June 2026

South Australia is the cheapest state in the country for petrol right now, and prices kept sliding all week. Metro U91 has now dropped for five consecutive weeks, landing at 158.8c/L — a meaningful relief for Adelaide drivers who watched prices sit uncomfortably high through autumn.

SA Fuel Prices Snapshot: Metro vs Rural, Week of 8 June 2026

What's Moving SA Petrol Prices This Week

Every single fuel type fell this week, and the drops weren't trivial. E10 led the charge, shedding 4.6c in metro areas to settle at 154.0c/L, making it the cheapest fuel available to SA drivers right now. If your car can run E10, that's where the savings are.

Metro U91 drifted steadily downward from 159.2c on Monday to 158.6c by Sunday, with barely a blip in between. Rural U91 told a similar story, easing from 185.8c to 182.9c across the week. That's a smooth, consistent decline with no mid-week surprises.

P95 and P98 both shed around 4.4 to 4.5c metro-side. P98 is now at 183.4c/L, which is still a significant premium if you're driving a car that doesn't genuinely require it.

Rural diesel drivers got the biggest single-fuel relief this week: a 5.6c drop to 216.8c/L. That's still expensive for anyone covering long distances outside Adelaide, but the direction is encouraging. Metro diesel eased to 201.3c/L, down 4.0c, though the 42.5c gap over U91 remains wide and worth factoring in if you're running a diesel vehicle.

SA vs the Rest of Australia on Petrol Prices

SA's metro U91 average of 158.8c/L sits 8c below the national metro average of 166.8c/L, making it the cheapest state in the country. ACT drivers are paying 174.6c/L for the same fuel.

How Much Prices Vary Across SA Metro Stations

This is where shopping around really pays off. The cheapest metro station recorded this week came in at 151.5c/L, while the priciest hit 199.9c/L. That's a 48.4c spread between the two extremes — an enormous difference on a 60-litre tank.

Brand averages show a similar story. SOLO averaged 155.2c across 10 stations, and U-Go came in at 155.5c across 5 stations. On the other end, BP averaged 165.5c and Independent stations averaged 170.3c. Choosing the right brand can save you more than 15c per litre without driving across town.

Last Sunday (14 June) was the cheapest day to fill up this week, with metro U91 touching 158.6c/L.

SA Metro Petrol Price Forecast: Next 3 Days

The slide looks set to continue. The Petrol Smart model forecasts metro U91 reaching 157.5c/L on Monday (78% confidence), 156.9c on Tuesday (71% confidence), and 156.0c by Wednesday (65% confidence). All three days sit below the current 158.8c/L, so if you can wait a couple of days, you may catch a lower price.

How to Save on Fuel Costs in SA This Week

SA's 30-day U91 low is 151.5c/L, and the current metro average of 158.8c is sitting closer to that floor than the ceiling (199.9c). Prices are trending in the right direction. If your car accepts E10, the 154.0c/L metro average is the smart choice right now. Rural drivers will notice prices are still running 25c+ higher than Adelaide — that gap makes planning fill-ups before leaving the metro genuinely worthwhile.

Checking brand and station prices before you pull in can save you real money. The data this week shows more than a 15c difference between the cheapest and priciest brands.

Download Petrol Smart for live prices on the map, route planning, and price alerts. It's free and has no ads.