Preston Diesel Lifts 15 Cents in a Day as Geelong Servos Hold Under 260

Preston Diesel Lifts 15 Cents in a Day as Geelong Servos Hold Under 260

This week's fuel price data uncovers a diesel move in Victoria that deserves closer scrutiny. As of 16th Sep 2026 2:12pm AEST, the state diesel average sits at 268.4 cents a litre, up 8.1 cents on yesterday's 260.3. That is a substantial shift for a single day across 1,036 servos, and diesel does not normally swing the way unleaded does when a metro price cycle resets.

Digging deeper into the numbers, the lift is not spread evenly. A handful of suburbs in Melbourne's north and south east did most of the work, while the Geelong region and parts of regional Victoria barely moved at all.

Where the lift landed

Preston is the standout. Eight servos there averaged 250.7 cents yesterday and 265.4 today, a rise of 14.7 cents in twenty four hours. Yesterday Preston was one of the cheaper places to buy diesel in metropolitan Melbourne. Today it sits well above the state average.

Nearby Campbellfield followed the same path, moving from 259.5 to 272.1 across five servos, a 12.6 cent increase. Epping showed the same pattern on premium diesel, where ten servos went from 259.3 to 275.2, up 15.9 cents.

It was not only the north. Langwarrin in the south east lifted 12.4 cents to 273.9, and out in Gippsland, Sale moved 13.2 cents to 275.1 across six servos.

Five suburbs, all moving between 12 and 16 cents on the same day, all in the same direction. That kind of uniformity rarely comes from independent operators reading the wholesale market on their own. It looks a lot more like a coordinated reset, and motorists in these areas are entitled to ask why the diesel price at their local servo rose nearly six per cent in an afternoon.

Where it did not

A closer look reveals the Geelong region sat this one out. North Geelong is currently the cheapest diesel suburb in Victoria with a low of 249.3 and an average of 254.9 across three servos. Belmont averages 257.8 and Grovedale 258.6. All three suburbs top out at exactly 261.6, which suggests one operator is setting a ceiling that the others are pricing under.

Regional Victoria tells a similar story. Epsom on the northern edge of Bendigo has diesel from 251.9, and Leongatha in South Gippsland from 251.0. Both average under 259.

Put those numbers next to Preston and the variation is striking. A Preston motorist who filled a 70 litre ute yesterday at 250.7 would have paid about $175. The same fill today at 265.4 costs a little over $185. Driving to Geelong is obviously not the answer, but the gap shows how much of today's price is retail margin rather than the cost of the fuel itself. Preston yesterday was cheaper than North Geelong is today, and it is hard to see what changed about the underlying cost of diesel overnight.

The bigger picture

Victoria still holds the cheapest diesel average in the country at 268.4, a whisker under Western Australia at 268.9 and ahead of New South Wales at 270.6, South Australia at 270.7 and Queensland at 271.1. That position is now under pressure. NSW lifted 11.4 cents on the same day Victoria lifted 8.1, while Queensland eased 1.0 and South Australia eased 0.4.

This raises some interesting questions. If a wholesale cost increase were driving the move, Queensland and South Australia would be expected to follow within days. If they do not, the eastern seaboard lift looks more like a retail decision, and that is worth investigating. Our price trends page will show which way this goes over the coming week.

The spread is also worth noting. Victoria's cheapest diesel today is 215.9 and its dearest is 339.9, a gap of 124 cents within a single state. Any motorist paying near the top of that range is paying for convenience or a lack of competition, not for diesel.

What motorists should do

Motorists in Melbourne's north should be aware that the lift in Preston, Campbellfield and Epping happened in one step, and history suggests it will come back down in stages rather than all at once. If a tank can wait a few days, waiting is the sensible option. Compare live diesel prices before committing, because the servo two suburbs over may not have moved yet.

For those on the Geelong side, or heading through Bendigo or South Gippsland, current prices are among the best in the state and unlikely to fall much further this week.

Armed with this information, motorists can make informed decisions and avoid paying more than necessary. And to the operators who moved Preston 14.7 cents in a day: the data is public, and people are watching.