How to Save Money on Fuel During the Big Lap (2026 Guide)
Practical fuel-saving tips for Australia's Big Lap. Compare prices, drive smarter, and use live fuel data from The Lap Club to cut hundreds off your lap budget.
You can save hundreds — sometimes thousands — on fuel during the Big Lap by comparing live prices before you fill, reducing towing weight, and adjusting driving habits for outback conditions. With diesel and petrol prices varying wildly between coastal cities and remote roadhouses, smart lappers plan fuel stops instead of filling wherever they happen to be low.
This guide covers five proven strategies for cutting fuel costs on a lap around Australia, plus how to use live price data so you’re never paying peak roadhouse rates when a cheaper servo is 50 km down the road.
Why fuel is your biggest variable cost on the Big Lap
Most Big Lap budgets break down roughly like this:
| Expense | Typical share |
|---|---|
| Fuel | 25–35% |
| Food & groceries | 20–25% |
| Accommodation / camps | 15–25% |
| Vehicle maintenance | 10–15% |
| Activities & tours | 10–15% |
When you’re towing a caravan, fuel consumption can jump from 10–12 L/100 km on the tow vehicle alone to 18–25 L/100 km combined. Over 15,000–30,000 km, even a 10-cent-per-litre saving adds up fast.
Remote roadhouses know they have a captive audience. It’s common to see fuel 30–50 cents per litre above city prices. The trick is knowing where the cheaper options are before you need them.
5 fuel-saving tips that actually work
1. Compare live prices before every fill
Don’t assume the servo on the highway is your only option. Apps with live Australian fuel data — including The Lap Club with 6,800+ stations — let you see prices along your route before you commit.
Practical habit: Each morning, check prices for the next 200–300 km of your planned route. Fill at the cheapest reputable station in that window, not the first one when your gauge drops.
2. Lighten the load
Every extra 100 kg can add around 1–2% to fuel consumption when towing. Before you leave:
- Empty grey and black water tanks when leaving a dump point
- Carry only the water you need until the next fill point
- Audit your storage — duplicate tools, full gas bottles, and “just in case” gear add up
Use The Lap Club Weight Manager to track your rig’s loaded weight and stay compliant without over-packing.
3. Drive for economy, not speed
On the open road with a van on the back:
- 90–95 km/h is often the sweet spot — above 100 km/h, fuel use climbs sharply
- Use cruise control on flat highways to avoid unconscious acceleration
- Anticipate hills: ease off before crests, let momentum carry you down
- Avoid unnecessary idling at roadhouses — air-con while stationary burns fuel fast
4. Maintain tyre pressures
Under-inflated tyres increase rolling resistance and fuel consumption. Over-inflated tyres wear unevenly and handle poorly on gravel.
Check pressures at every fuel stop. For towing, follow your rig’s placard and adjust for load and surface — bitumen vs gravel vs sand. The Lap Club’s Tyre Pressure Advisor gives personalised recommendations based on your tow vehicle, caravan, and tyre type.
5. Plan routes to avoid backtracking
Every unnecessary kilometre is fuel you didn’t need to burn. Before you leave a region:
- Cluster sightseeing into logical loops
- Plan resupply towns so you’re not doubling back for groceries or fuel
- Use a proper multi-stop trip planner rather than single-leg navigation
How much can you realistically save?
Here’s a rough example for a couple towing a caravan 20,000 km, averaging 20 L/100 km at $2.00/L:
| Scenario | Cost |
|---|---|
| No price planning (avg $2.15/L remote premium) | $8,600 |
| Smart fills (avg $1.95/L) | $7,800 |
| Saving | ~$800 |
Add lighter loading, slower highway speeds, and better route planning, and many lappers report saving $1,000–$2,000 over a full lap.
Track fuel spending as you go
Knowing your litres per 100 km helps you spot problems early — dragging brakes, tyre issues, or an overloaded rig all show up in consumption before they become breakdowns.
Log each fill in The Lap Club’s Budget Tracker alongside campsites and maintenance. You’ll see your real cost per kilometre and can adjust habits mid-lap instead of getting a nasty surprise at the end.
Join the waitlist for early access
The Lap Club is currently in waitlist mode — join at lapclub.com.au for early access to live fuel prices, trip planning, and the full Big Lap toolkit. Enter the BCF giveaway while you wait.
More daily Big Lap guides on The Lap Club Blog.
Frequently Asked Questions (FAQ)
What is the cheapest way to buy fuel on the Big Lap?
Compare live prices along your route and fill at the lowest-cost station within your range — not the nearest servo when you’re running low. Membership fuel discounts (RACQ, NRMA, etc.) and supermarket fuel vouchers can stack on top.
How much fuel should I budget for the Big Lap?
Most tow-vehicle-and-caravan combos budget $6,000–$10,000 for fuel on a full lap, depending on distance, consumption, and how much remote-roadhouse premium you pay. Track actual fills to refine your number within the first fortnight.
Does slowing down really save fuel when towing?
Yes. Above 90–100 km/h with a caravan, aerodynamic drag increases sharply. Many lappers find their best economy at 90–95 km/h on highways — and it’s safer for towing stability.
What is the best app for fuel prices in Australia?
For Big Lap travellers, The Lap Club combines live fuel prices with trip planning, campsites, and rig tools in one app. Dedicated fuel-only apps like FuelMap are useful but don’t integrate with your broader lap planning.
Should I carry extra fuel jerry cans?
On major routes, usually no — servos are frequent enough with planning. On remote tracks (Tanami, Gary Junction, etc.), follow local advice and carry appropriate reserves. Never store jerry cans inside the vehicle cabin.