Don't get pumped.
As of 28 July 2026, the cheapest Diesel in New South Wales is 184.9c per litre at Reddy Express, Deniliquin — versus the New South Wales average of 233.3c (1.4c below the national average of 234.7c). Across 1,152 stations, Diesel ranges from 184.9c to 336.0c, so filling a 50-litre tank at the cheapest station saves about $24.20 over the state average. Over the past week the NSW average has risen 20.4c.
Compare Diesel across 1,152 stations in New South Wales. Updated 09:59 PM, 28 Jul 2026.
Over the past 88 days, Diesel in New South Wales has averaged 221.7c per litre, peaking at 257.2c on 1 May and bottoming out at 184.7c on 1 July — a range of 72.5c. Over the past week the NSW average has risen 20.4c. Timing a fill-up around that range matters: on a 50-litre tank, filling at the period low instead of the peak saves $36.25.
| Month | Average Diesel |
|---|---|
| May 2026 | 239.2c |
| June 2026 | 212.3c |
| July 2026 | 198.4c |
| Brand | Avg Price | Stations |
|---|---|---|
| Speedway | 222.5c | 39 |
| Budget | 224.6c | 9 |
| Exxon | 225.7c | 3 |
| Pearl Energy | 226.2c | 12 |
| Ultra Petroleum | 226.4c | 10 |
| Metro | 226.9c | 69 |
| Ampol Breeze | 226.9c | 4 |
| Powerfuel | 227.0c | 4 |
The cheapest Diesel price in New South Wales right now is 184.9c per litre, across 1,152 stations tracked. The cheapest suburb right now is Bigga at a 205.1c average across 2 stations. Filling a 50-litre tank at the cheapest station instead of a station charging the state average of 233.3c saves $24.20. See the live cheapest-stations list on this page for the exact station, address and suburb. Prices update twice daily from the official state government feed, so the cheapest station can change between the morning and afternoon updates — check again before you drive.
The current New South Wales average for Diesel is 233.3c per litre — 1.4c below the national average of 234.7c. Prices at individual stations range from 184.9c to 336.0c, a spread of 151.1c that shows how much shopping around can save. Over the past week the NSW average has risen 20.4c. Petrolmate computes this average from every station reporting Diesel in New South Wales via the official government price feed, refreshed twice daily.
Speedway is currently the cheapest brand for Diesel in New South Wales at 222.5c per litre average across 39 stations. The gap between the cheapest brand (Speedway, 222.5c) and the priciest in our list (Independent, 230.8c) is 8.3c per litre — about $4.15 per 50-litre tank. Brand averages are recalculated twice daily from official price data, so the cheapest brand can change with the price cycle.
Over the past 88 days, Diesel in New South Wales has averaged 221.7c per litre, peaking at 257.2c on 1 May and bottoming out at 184.7c on 1 July — a range of 72.5c. Over the past week the NSW average has risen 20.4c. Monthly averages for the past half-year are published in the table on this page. All figures come from official New South Wales government price reporting, aggregated daily by Petrolmate.