Don't get pumped.
As of 21 July 2026, the cheapest Premium Diesel in Australian Capital Territory is 202.7c per litre at Costco, Canberra Airport Majura Park — versus the Australian Capital Territory average of 219.4c (2.7c above the national average of 216.7c). Across 48 stations, Premium Diesel ranges from 202.7c to 230.9c, so filling a 50-litre tank at the cheapest station saves about $8.35 over the state average. Over the past week the ACT average has risen 26.7c.
Compare Premium Diesel across 48 stations in Australian Capital Territory. Updated 08:48 AM, 21 Jul 2026.
Over the past 71 days, Premium Diesel in Australian Capital Territory has averaged 226.7c per litre, peaking at 262.7c on 11 May and bottoming out at 187.0c on 1 July — a range of 75.7c. Over the past week the ACT average has risen 26.7c. Timing a fill-up around that range matters: on a 50-litre tank, filling at the period low instead of the peak saves $37.85.
| Month | Average Premium Diesel |
|---|---|
| May 2026 | 256.5c |
| June 2026 | 214.9c |
| July 2026 | 199.0c |
| Brand | Avg Price | Stations |
|---|---|---|
| Metro | 211.6c | 7 |
| 7-Eleven | 216.5c | 10 |
| BP | 220.9c | 9 |
| Ampol Foodary | 221.7c | 9 |
| EG Ampol | 227.3c | 9 |
The cheapest Premium Diesel price in Australian Capital Territory right now is 202.7c per litre, across 48 stations tracked. The cheapest suburb right now is Mitchell ACT at a 210.4c average across 2 stations. Filling a 50-litre tank at the cheapest station instead of a station charging the state average of 219.4c saves $8.35. 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 Australian Capital Territory average for Premium Diesel is 219.4c per litre — 2.7c above the national average of 216.7c. Prices at individual stations range from 202.7c to 230.9c, a spread of 28.2c that shows how much shopping around can save. Over the past week the ACT average has risen 26.7c. Petrolmate computes this average from every station reporting Premium Diesel in Australian Capital Territory via the official government price feed, refreshed twice daily.
Metro is currently the cheapest brand for Premium Diesel in Australian Capital Territory at 211.6c per litre average across 7 stations. The gap between the cheapest brand (Metro, 211.6c) and the priciest in our list (EG Ampol, 227.3c) is 15.7c per litre — about $7.85 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 71 days, Premium Diesel in Australian Capital Territory has averaged 226.7c per litre, peaking at 262.7c on 11 May and bottoming out at 187.0c on 1 July — a range of 75.7c. Over the past week the ACT average has risen 26.7c. Monthly averages for the past half-year are published in the table on this page. All figures come from official Australian Capital Territory government price reporting, aggregated daily by Petrolmate.