Motorists in Perth and Mandurah are advised to fill up now if they need to, with petrol prices set to rise tomorrow.
Wholesale price increases, driven by higher international benchmarks, are flowing through to local pump prices. However, buying regular unleaded petrol (ULP) from the cheapest site in Perth rather than the most expensive, a difference of 66 cents per litre, means motorists can potentially save $39 on a 60-litre tank.
FuelWatch reports that, from 6am tomorrow (Wednesday 18 March 2026), the average price of Perth’s regular unleaded petrol (ULP) will increase by 11 cents per litre (cpl) to 239.9 cpl with BP hiking up to 267.9 cpl; EG Ampol up to 259.9 cpl; Ampol and Caltex up to 249.9 cpl; Reddy Express up to 239.9 cpl; United up to 235.9 cpl; Vibe up to 235.7 cpl; and 7-Eleven up to 229.9 cpl.
Despite the average hike tomorrow, there are still 23 individual sites offering ULP below 224 cpl, so consumers should check the FuelWatch website to find the lowest price near them.
Tuesday’s cheapest ULP is available for:
- 199.9 cpl at Vibe Mt Helena in the East;
- 199.9 cpl at Vibe Hamilton Hill in the South; and
- 199.5 cpl at Vibe Nollamara in the North.
Wednesday’s cheapest ULP will be available for:
- 223.9 cpl at UGO Mundaring in the East;
- 209.3 cpl at Burk Cannington in the South; and
- 217.3 cpl at Burk Landsdale in the North.
To find the cheapest fuel at any time, check the mobile compatible www.fuelwatch.wa.gov.au site which features an interactive map. After 2.30pm each day both today’s and tomorrow’s prices are available. Also, get a daily update by subscribing to free email alerts or phone 1300 30 40 54. If you want to understand more about how FuelWatch works, go to www.fuelwatch.wa.gov.au/about/works.
Media Contact: Frankie Pennington, (08) 6552 9410 / 0429 078 791/ cpmedia@lgirs.wa.gov.au