Mandurah and Baldivis Servos Cop 19 to 25 Cent Premium 95 Jumps While WA Diesel Climbs 15 Cents Statewide
Right, so the WA price cycle has done its thing again, and a few servos over the west have copped a notable reset in the last 24 hours. As of Thursday 7th May 2026, 2:05pm AEST, Baldivis Premium 95 has lifted 25.8 cents to sit around 203.3 cents a litre, with Busselton close behind on a 23.5 cent jump to 205.7 cents. Down the road in Mandurah, the same fuel has gone up 19.2 cents to 198.9 cents a litre, and even out at Kalgoorlie the Premium 98 has lifted 19.1 cents to 214.0 cents. Fair dinkum, that's a tidy jump for one cycle.
For the diesel mob, things aren't looking flash either. The state average for diesel prices across Western Australia has climbed 15.6 cents in 24 hours, sitting at 250.9 cents on average across 1,066 servos. That's a 6.63 percent rise in a single day, which is the sort of move you'd usually only see when the cycle resets across multiple fuel types at once.
Here's the thing about the WA cycle
If you're driving over there, you'll know the WA price cycle works on a weekly rhythm, with Tuesdays and Wednesdays usually being the cheapest days and prices climbing through the back half of the week. Now, you'd be mad not to use that to your advantage, especially when the gap between cheap and dear can be 30 cents or more on the same fuel.
The other thing WA has going for it is the official FuelWatch system, which gives motorists a 24 hour heads up on the next day's prices. It's the only state in Australia where you can plan your fillup the night before with proper certainty. So if you're staring down a 200 dollar tank for a 4WD, that's the difference between a takeaway pizza and a proper roast dinner with the tank filled.
For anyone wanting to time it right, have a squiz at the best time to fill up guide. It walks you through the cycles in each state, including how the WA weekly dance shakes out compared to Sydney, Melbourne and Brisbane.
Where the cheap diesel still lives in WA
Even with the state average climbing, there are still a few servos out west doing the right thing by motorists. Beckenham is sitting on the cheapest WA diesel at 213.3 cents on average across 3 servos, with the spread only 2 cents between cheapest and dearest pump. Now that's what I call consistent value.
Out near the airport, Forrestfield drivers are seeing diesel from 217.7 cents, and the freight blokes heading down to Kwinana Beach can grab it from 216.9 cents at the cheapest pump, though the spread there is a wider 21 cents so it pays to check before you pull in.
Over in the inner suburbs, Mount Lawley has a 22.6 cent spread between cheapest and dearest, with the bottom end at 217.3 cents. That's the sort of difference that adds up to 13 bucks on a 60 litre fill, which is no small change when you're trying to keep the household budget honest.
What's actually driving the lift
The Premium 95 jumps in Baldivis, Busselton, Mandurah and out around the Goldfields all landed in the same 24 hour window, which is a classic cycle reset signature. Worth keeping an eye on premium 95 prices if you've got a car that needs the higher octane, because these resets usually flow through to the regular ULP and E10 grades within a day or two.
For the diesel side, the 15 cent statewide lift is a bit different. Diesel doesn't usually follow the same weekly cycle as petrol in WA, so when it moves this much in one go, it's typically a wholesale supply story rather than a cycle thing. Either way, it means the 60 dollar fill from last week is now closer to 70, which is two beers at the local pub gone in one trip to the bowser.
What to do this arvo
If you're filling up in the Perth metro and you can hold off another day or two, it might be worth waiting to see if the prices settle back. Otherwise, the cheap pockets in Beckenham, Forrestfield and Kwinana are still doing alright, and using the FuelWatch heads up the night before is the easiest free trick going. Even over in Sydney where I'm based, mates of mine reckon they'd love a 24 hour price preview, so the WA mob should make the most of it.
Look, end of the day, a bit of planning means more cash in your pocket for the important stuff. Can't argue with that.
