Greenacre Diesel Holds Below 290 Cents While NSW State Average Climbs and Tamworth Premium Falls Nearly 30 Cents

This morning's fuel price data uncovers a NSW story worth investigating. While Victoria and Western Australia diesel averages dropped more than 8 cents per litre overnight, NSW has gone the other direction, climbing 6.4 cents to a state average of 312.1 cents. That is a 15 cent divergence in a single sync cycle, and it raises some interesting questions about how different refinery supply chains and wholesale contracts filter through to the pump.

Digging deeper into the numbers, the picture becomes more complicated. Pockets of Sydney are quietly ignoring the state-wide climb, with Greenacre diesel sitting at a cheapest of 288.8 cents and an average of 292.5 cents across three servos. That is more than 23 cents below the NSW state average and genuinely competitive against anything Victoria is offering today.

The Sydney Suburb Story

As of 17th Apr 2026 08:00am AEST, a handful of Sydney suburbs are delivering diesel prices that bear no resemblance to the state average:

The variation between these suburbs and the NSW state maximum of 375.0 cents is striking. That is a 86 cent gap within the same state on the same fuel. Motorists filling a 70 litre tank at the wrong end of that spread are paying $60 more than they need to, for identical product.

A closer look reveals why Greenacre and Smithfield consistently undercut: both sit in Sydney's south-western industrial belt, where independent and discount operators push margins down and force brand competition. The same pattern shows up in Bankstown and Parramatta on most cycles. If you live within a reasonable drive of these areas, the savings add up quickly over a year.

Tamworth Premium Falls Nearly 30 Cents

Over in regional NSW, the movement is even more dramatic, though it is happening on a less popular fuel. Tamworth Premium Unleaded 98 has dropped 29.0 cents per litre in the latest cycle, moving from 270.9 cents down to 241.9 cents across five stations. That is not a correction. That is a full cycle reset.

This raises some interesting questions about how Premium 98 is priced in regional centres. It is a niche fuel with thin demand, so pricing signals can lag before finally catching up in one large movement. Drivers of performance vehicles in Tamworth who have been quietly paying cycle-peak prices for weeks now have a narrow window to benefit before the rebound.

The State Comparison Nobody Is Talking About

NSW at 312.1 cents now holds the unenviable title of most expensive mainland diesel average, ahead of Queensland at 311.4 cents and South Australia at 310.6 cents. Contrast that with Victoria's 304.6 cent average and the price transparency issue becomes obvious. Both states draw from similar supply infrastructure, both are experiencing the same global wholesale conditions, and yet NSW drivers are paying roughly 7.5 cents per litre more on average.

That is not a rounding error. Across NSW's 1,119 diesel-selling stations, a 7.5 cent gap represents significant consumer cost that deserves scrutiny.

What Motorists Should Take From This

Motorists should be aware that the state average is only a starting point. The NSW diesel spread of 90.1 cents between cheapest and most expensive means the headline number is almost meaningless at an individual suburb level. Your actual cost depends entirely on which servo you roll into.

For drivers in Greenacre, Smithfield, and the south-western Sydney corridor, today represents one of those quiet days where your local prices are materially better than the state narrative suggests. Elsewhere in NSW, particularly in regional areas where the maximum is touching 375 cents, the advice is the opposite: check before you fill.

The interactive fuel map will tell you exactly where your nearest competitive servo sits right now. Armed with this information, motorists can make informed decisions and avoid paying more than necessary.