Travel

Petrol Price Trends in Adelaide - May 2025

Holly Thompson

Holly Thompson

— 2 min read
Petrol Price Trends in Adelaide - May 2025
Photo by Mehluli Hikwa / Unsplash

Keeping your tank full without breaking the bank is a priority for Adelaide drivers, and May 2025 has brought its share of ups and downs at the pump. With petrol prices following their usual cycles, here’s a look at the trends as of mid-May and what to expect as the month progresses.

As of 3:08 PM ACST on May 15, 2025, Adelaide’s unleaded 91 petrol is averaging 157.9 cents per litre (cpl), according to real-time data from PetrolSpy. Prices across the city range from 153.9 cpl to 165.9 cpl, reflecting a discount phase in the typical two-week price cycle. Some of the cheapest stations include United in West Croydon and Finsbury at 153.9 cpl, while higher prices are seen at BP stations in St Peters and Linden Park at 165.9 cpl.

Screenshot from PetrolSpy

What’s Driving the Changes?

Adelaide’s petrol prices are shaped by retailer pricing decisions rather than wholesale costs, leading to the sharp rises and gradual declines characteristic of the cycle. The current discount phase, evident from the drop to as low as 153.9 cpl at some stations, follows a peak earlier this month. Historical patterns suggest prices peak around the start of May before easing mid-month, a trend consistent with today’s observations.

Looking Ahead

With the cycle likely nearing its midpoint, prices may begin to rise again toward the end of May, potentially climbing back toward 190–200 cpl as a new cycle emerges. Local competition and seasonal demand could influence this shift, so motorists should stay alert. The exact trajectory will depend on retailer moves in the coming days.

Tips to Save at the Pump

Make the most of Adelaide’s price cycles with these practical tips:

  • Time Your Fills: Fill up now during the discount phase, with prices as low as 153.9 cpl, or wait about a week after the next peak for the next drop.
  • Use Apps: Check real-time prices with PetrolSpy or the RAA app to find the cheapest stations near you.
  • Shop Around: Compare stations, as the 12 cpl range (153.9–165.9 cpl) offers significant savings with a quick search.
  • Join Savings Programs: RAA members can save 4 cents per litre at EG Ampol locations—check the terms!

Stay informed and plan your refills wisely to navigate Adelaide’s petrol price trends this May. Visit our travel tips page for more ways to save while exploring the city, and share your fuel-saving hacks with us at @AmazingAdelaide!

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