Day-by-Day Breakdown
Here is how each day of the week typically aligns with the Melbourne fuel price cycle, along with the best action for each day.
Monday
3 out of 5Dropping
Prices are falling from the weekend peak. Still relatively high, but better than Friday–Sunday. A partial top-up is reasonable if you need fuel today.
Tuesday
5 out of 5Low
Typically the first day of the weekly trough. Prices often drop sharply overnight Monday–Tuesday. This is one of the two best days of the week to fill up completely.
Wednesday
5 out of 5Low
Mid-week trough — often the cheapest day of the week. If you can only choose one day to fill up, aim for Wednesday morning when trough conditions are most reliable.
Thursday
3 out of 5Turning
Prices can start rising on Thursday afternoon. Fill up in the morning if your tank is low; avoid late-afternoon fills as some stations may already be repricing upward.
Friday
1 out of 5Rising/Peak
One of the worst days to fill up. Prices are typically rising or at the weekly peak. If you must fill up Friday, compare multiple stations and try to fill early in the morning before stations reprice.
Saturday
1 out of 5Peak
Usually the most expensive day of the week due to high weekend travel demand. Avoid filling up on Saturday if your tank can wait until Tuesday.
Sunday
2 out of 5High/Dropping
Still elevated from the weekend peak but prices may start dropping Sunday afternoon as the cycle begins its descent. Better than Saturday, but far from the trough pricing of mid-week.
Morning vs Afternoon — Does It Matter?
During the mid-week trough (Tuesday–Wednesday), the time of day matters less because prices are uniformly low at virtually all stations. However, during the transition phase (Thursday–Friday), filling up in the morning gives you a significant advantage.
Terminal gate price changes are published overnight and typically take effect from early morning. On days when prices are rising, stations that have already received the overnight TGP increase will reprice first — often before 9am. Stations that reprice manually may not update until later in the day. This creates a short window on rising-phase mornings where some stations are still at yesterday's lower price.
The practical upshot: if you are filling up on Thursday or Friday, check live prices early and prioritise stations that have not yet moved. By lunchtime, most stations in competitive areas will have aligned to the higher price.
How to Build a Fuel-Saving Routine
The single biggest habit change that saves money is keeping your tank at a level that gives you flexibility to choose when you fill up — not just reacting when you are near empty. A tank between 25% and 70% on Sunday gives you two full days before you must fill up, allowing you to wait for Tuesday's low.
- Check prices on Tuesday morning. Use the live suburb pages or the map to see current prices near you. If there has been a sharp overnight drop, fill up now.
- Compare 2–3 nearby suburbs. The cheapest suburb on Tuesday may be 8–10¢/L cheaper than your own suburb at the same time. A short detour can be worthwhile.
- Fill completely during the trough. Do not top up weekly — fill completely when prices are low to maximise the amount purchased at the cycle floor.
- Avoid filling on Friday or Saturday unless your tank is critically low. A partial fill on Thursday morning is better than a full fill on Saturday.
What if You Cannot Avoid Peak-Day Fills?
Many drivers cannot completely avoid filling up on high-price days due to work schedules, school runs, or unexpected trips. In these situations, there are still strategies that reduce cost:
- Fill a partial amount — enough to reach next Tuesday — rather than a full tank at peak prices.
- Compare 3–4 nearby stations on the day rather than defaulting to the nearest one. Even at peak, spreads of 5–10¢/L exist between stations.
- Check nearby suburbs — prices in a suburb 2km away may still be in a lower phase even on a high-price day.
- Use discount vouchers (supermarket fuel discounts) on peak days to partially offset the cycle premium.