Don't get pumped.
As of 21 July 2026, the cheapest Premium Diesel in New South Wales is 188.5c per litre at Pearl Energy, New South Wales — versus the New South Wales average of 217.5c (0.5c below the national average of 218.0c). Across 1,313 stations, Premium Diesel ranges from 188.5c to 253.9c, so filling a 50-litre tank at the cheapest station saves about $14.50 over the state average. Over the past week the NSW average has risen 32.4c.
Compare Premium Diesel across 1,313 stations in New South Wales. Updated 07:42 PM, 21 Jul 2026.
Over the past 85 days, Premium Diesel in New South Wales has averaged 220.2c per litre, peaking at 256.7c on 27 April and bottoming out at 177.5c on 1 July — a range of 79.2c. Over the past week the NSW average has risen 32.4c. Timing a fill-up around that range matters: on a 50-litre tank, filling at the period low instead of the peak saves $39.60.
| Month | Average Premium Diesel |
|---|---|
| May 2026 | 234.5c |
| June 2026 | 203.2c |
| July 2026 | 191.8c |
| Brand | Avg Price | Stations |
|---|---|---|
| Costco | 202.7c | 4 |
| Pearl Energy | 206.1c | 39 |
| Speedway | 206.4c | 15 |
| Enhance | 207.5c | 24 |
| Budget | 207.9c | 20 |
| Metro | 208.7c | 173 |
| Ampol Breeze | 208.8c | 6 |
| Arko Energy | 209.5c | 5 |
The cheapest Premium Diesel price in New South Wales right now is 188.5c per litre, across 1,313 stations tracked. The cheapest suburb right now is East Wagga Wagga at a 196.5c average across 3 stations. Filling a 50-litre tank at the cheapest station instead of a station charging the state average of 217.5c saves $14.50. 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 Premium Diesel is 217.5c per litre — 0.5c below the national average of 218.0c. Prices at individual stations range from 188.5c to 253.9c, a spread of 65.4c that shows how much shopping around can save. Over the past week the NSW average has risen 32.4c. Petrolmate computes this average from every station reporting Premium Diesel in New South Wales via the official government price feed, refreshed twice daily.
Costco is currently the cheapest brand for Premium Diesel in New South Wales at 202.7c per litre average across 4 stations. The gap between the cheapest brand (Costco, 202.7c) and the priciest in our list (United, 210.9c) is 8.2c per litre — about $4.10 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 85 days, Premium Diesel in New South Wales has averaged 220.2c per litre, peaking at 256.7c on 27 April and bottoming out at 177.5c on 1 July — a range of 79.2c. Over the past week the NSW average has risen 32.4c. 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.