Fuel prices in Perth

Unleaded every day for a year

See the saw teeth? Each sharp rise is the start of a new cycle. The low point just before it is the time to fill up.

Cents a litre: the average across stations of each one's price at noon.

How to catch the low

• Watch for the slide. After a jump, prices drift down a little each day. The longer they've been falling, the closer the next jump is.
• Fill up before the jump, not after. When a few stations near you suddenly cost 10c or more extra, the rest usually follow within days. Fill up at one that hasn't gone up yet.
• Top up when it's low. If prices are near the bottom and your tank is half full, fill it anyway. You'll skip paying the top price next week.
• Check tomorrow's price today. WA stations must set tomorrow's price a day ahead, and it can't change for 24 hours. FuelWatch shows tomorrow's prices each afternoon.

Over the year to October 2026, Perth went through 44 regular cycles. A typical one lasted 7 days, and prices rose 17c from the low to the high. Within each cycle, the days within 3c of its lowest price were 7.6c a litre cheaper than its average day. On 1,300 litres a year, that's the saving above. The big rise that began in March 2026 came from the cost of fuel itself, not the cycle, so we left it out.

The cheapest day of the week

In Perth, Tuesday is the cheapest day to fill up. It's about 15.2c a litre less than Wednesday, the dearest day.

How far each day's price sits above or below the average for its own week, over the year to October 2026.

Same fuel, different brand

Over the year, Burk stations in Perth charged 12.6c a litre less than the city average. Caltex charged 3.2c more. On a 50-litre tank, that gap is $7.89.

Brands with at least 8 stations in Perth, averaged over the same months. A brand's stations aren't spread evenly, so part of a gap can be where they are.

Perth against the rest of WA

Unleaded cost 16.2c a litre more in the rest of WA than in Perth. On a 50-litre tank, that's $8.08.

Averages over the year to October 2026. Perth means the whole city area the Australian Bureau of Statistics draws.

Unleaded by council area

The average price over the year in each council area with stations, against the WA average.

Unleaded in Perth since 2001

A litre cost 85c in January 2001 and 237c in October 2026.

Monthly averages, in the cents of the day (not adjusted for inflation).

Look further

• What your car costs to run: your fuel bill for a year in Perth or your council area.
• Fuel prices in Sydney
• Fuel prices in Canberra
• Fuel prices in Brisbane
• Fuel prices in Darwin
• Your area: rent, pokies losses and crime in your council.