Queensland Diesel Jumps Almost 10 Cents Overnight as Gympie Still Holds Cheap
Right, so if you run a diesel up in Queensland, have a read of this before your next fill. As of 2:15pm AEST on the 31st May 2026, Queensland diesel has lifted 9.7 cents overnight to a state average of 226.6 cents. That's the sharpest single day move of any state in the country today, and it's the sort of jump that quietly puts an extra seven or eight bucks on a standard ute tank.
And it isn't only Queensland either. Down in South Australia, diesel copped a similar bump, up 8.7 cents to 224.7 on average. So the eastern half of the country is having a bit of a moment at the bowser, and it's the diesel mob wearing it more than the petrol crowd this week. If you want to see how the states stack up against each other, the diesel prices page lays out where everyone's sitting right now.
The cities are climbing, the regions are holding
Now, you'd be forgiven for thinking the bush always pays more. Plenty of the time that's true. But this week it's flipped on its head in a few spots. Up in Gympie, the average diesel is sitting around 204.9 cents, with the cheapest pumps down at 195.7. And just next door in Monkland, you can find diesel from 194.7 cents, with the local average hovering near 201.8. That's a good 25 to 30 cents under the state average. Fair dinkum, the gap between filling up there and a metro servo at the top of the cycle is real money.
Meanwhile out west, Emerald hasn't been so lucky. Diesel there climbed 8.3 cents to 228.2, a touch above the state average, which goes to show the mining and freight towns cop the wholesale rise like everyone else. If you're out that way anyway, worth a quick check before you commit to a full tank.
Brisbane and the Gold Coast tell a mixed tale
Down in the southeast it's a bit of a patchwork. Over in Moorooka on the Brisbane side, premium 98 has nudged up 8.9 cents to 192.8, so the high octane drivers are copping it too. But here's a little bright spot for a change. Down at Ashmore on the Gold Coast, premium diesel has gone the other way, dropping 9.2 cents to 219.2. So even in a week where the state average is heading north, there are servos quietly doing the right thing by locals.
That's the bit a lot of people miss. A state average is just a big blurry number. What matters is the servo two streets over from you, and those can be 20 or 30 cents apart in the same suburb.
So what do you actually do about it
Look, when diesel lifts this fast across a whole state, it usually means we're climbing toward the top of a cost cycle rather than copping a one off blip. My advice, for what it's worth, is dead simple. Don't panic fill the whole tank at the first servo you see flashing 228 on the board. If you've got a quarter tank to play with, hold off a day or two and watch the cheaper pockets like Gympie and Monkland settle.
And if you're trying to work out whether today's a buy day or a wait day, have a squiz at the best time to fill up guide. It breaks down how the weekly cycle tends to run so you're not just guessing. A bit of timing on a 70 litre diesel tank is the difference between a quiet win and copping it sweet for no reason.
Worth saying too, Queensland still isn't the dearest game in town. Diesel drivers in New South Wales are paying a state average of 224.2 cents, so the gap between the two has narrowed right up this week. Western Sydney mob like me are used to hunting for the cheap servos, and the same trick works up north. Find your three or four reliable cheapies and stick to them.
End of the day, a diesel that jumps 10 cents overnight isn't the end of the world, it's just a nudge to be a bit smarter about where and when you fill. A few minutes checking prices beats handing over an extra eight bucks a tank for nothing. Can't argue with that.
