Perth Petrol Prices — Week Ending 12 July 2026
Diesel: 182.8 c/L · National U91 average: 169.4 c/L
AIP weekly report · week ending 12 July 2026Perth runs the most disciplined fuel cycle in the country. Prices jump on a set day of the week, then drift down over the following days until the next rise, so the cheapest and dearest days are easy to predict.
Western Australia's FuelWatch, a WA Government service, goes a step further than most schemes. Stations must fix their price for the whole day and lodge it in advance, so FuelWatch can publish tomorrow's prices today. That lets you plan a fill around the cycle rather than guess at it.
| City | U91 (c/L) | Diesel (c/L) |
|---|---|---|
| Sydney | 165.5 | 185.8 |
| Melbourne | 166.9 | 187.7 |
| Brisbane | 169.9 | 188.2 |
| Perth | 167.1 | 182.8 |
| Adelaide | 163.5 | 187.2 |
| Hobart | 173.4 | 199.1 |
| Canberra | 178.3 | 200.3 |
| Darwin | 173.1 | 188.9 |
| National average | 169.4 | 190.7 |
What does a drive cost at Perth prices?
Default price: Perth average U91, week ending 12 July 2026. Fuel only — tolls, wear and rest stops not included.
Frequently asked questions
- What is the average petrol price in Perth this week?
- Regular unleaded (U91) averaged 167.1 c/L across Perth for the week ending 12 July 2026, and diesel averaged 182.8 c/L. The national average was 169.4 c/L.
- Why is this a weekly average and not a live price?
- Pump prices cycle within a week, so any single moment misleads. The weekly average is the fair comparison line — it comes from the Australian Institute of Petroleum's weekly report and we refresh it every week.
Trip costs from Perth
- Australian Institute of Petroleum — weekly prices reportverified
- ACCC weekly fuel price monitoringcross-checked
Weekly average retail prices for the week ending 12 July 2026 — individual stations vary with the price cycle. WA drivers can check live station prices via the state's fuel price service.