Don't get pumped.
As of 21 October 2026, the cheapest Premium Diesel in New South Wales is 257.5c per litre at Enhance, Bass Hill — versus the New South Wales average of 282.3c (0.7c above the national average of 281.6c). Across 1,390 stations, Premium Diesel ranges from 257.5c to 304.9c, so filling a 50-litre tank at the cheapest station saves about $12.40 over the state average. Over the past week the NSW average has fallen 3.0c.
Compare Premium Diesel across 1,390 stations in New South Wales. Updated 05:13 AM, 21 Oct 2026.
Over the past 82 days, Premium Diesel in New South Wales has averaged 262.3c per litre, peaking at 287.3c on 29 September and bottoming out at 237.8c on 31 July — a range of 49.5c. Over the past week the NSW average has fallen 3.0c. Timing a fill-up around that range matters: on a 50-litre tank, filling at the period low instead of the peak saves $24.75.
| Month | Average Premium Diesel |
|---|---|
| April 2026 | 256.8c |
| May 2026 | 234.5c |
| August 2026 | 249.6c |
| September 2026 | 263.2c |
| October 2026 | 274.0c |
| Brand | Avg Price | Stations |
|---|---|---|
| Costco | 268.7c | 4 |
| U-Go | 272.7c | 12 |
| Speedway | 274.2c | 16 |
| Enhance | 274.6c | 25 |
| Metro | 274.6c | 170 |
| Budget | 275.3c | 22 |
| Arko Energy | 277.5c | 7 |
| Pearl Energy | 278.2c | 14 |
The cheapest Premium Diesel price in New South Wales right now is 257.5c per litre, across 1,390 stations tracked. The cheapest suburb right now is Condell Park at a 262.2c average across 3 stations. Filling a 50-litre tank at the cheapest station instead of a station charging the state average of 282.3c saves $12.40. 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 282.3c per litre — 0.7c above the national average of 281.6c. Prices at individual stations range from 257.5c to 304.9c, a spread of 47.4c that shows how much shopping around can save. Over the past week the NSW average has fallen 3.0c. 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 268.7c per litre average across 4 stations. The gap between the cheapest brand (Costco, 268.7c) and the priciest in our list (Mobil, 278.7c) is 10.0c per litre — about $5.00 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 82 days, Premium Diesel in New South Wales has averaged 262.3c per litre, peaking at 287.3c on 29 September and bottoming out at 237.8c on 31 July — a range of 49.5c. Over the past week the NSW average has fallen 3.0c. 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.