How 4WD Owners Can Save Diesel on Long Camping Trips

For many 4WD owners, the adventure doesn’t begin when you arrive at the campsite, it begins the moment you leave the driveway. The journey to your destination can often be hundreds, sometimes thousands, of kilometres.

Whether you're heading into the Victorian High Country, taking a quick weekend trip a couple of hours from home, or pushing deep into remote tracks like Cape York, fuel quickly becomes one of the biggest costs of any off-road adventure.

When diesel prices rise, a few smart changes in how you drive, how your vehicle is set up, and how you plan your trip can make a noticeable difference.

Long-distance 4WD touring is one of the best ways to explore Australia, but fuel costs can quickly add up. By driving smoothly, keeping your vehicle well maintained, reducing unnecessary weight and planning ahead, you can stretch every tank further and make each adventure more affordable.

Often it’s the small things that make the biggest difference — meaning fewer stops at the fuel pump and more time enjoying the tracks, campsites and incredible landscapes that make 4WD touring so rewarding.

Here are some practical ways 4WD owners can stretch every tank further when heading off on their next camping trip.

Fill Jerry Cans Before Leaving the City

Fuel prices often increase significantly once you leave major suburban areas.

Remote towns and outback roadhouses have higher transport costs, which means diesel can sometimes be 30–50 cents per litre more expensive than in metro areas.

A simple trick many experienced tourers use is to:

• Fill up the vehicle in the suburbs

• Fill Jerry cans at the same time

• Use the Jerry cans once you’re deep into your trip

Not only does this save money, but it can also give you extra range when travelling through remote areas.

Drive Smoothly and Avoid Aggressive Throttle Response

Driving style has one of the biggest impacts on diesel consumption.

Hard acceleration and sudden braking force the engine to burn more fuel. When travelling long distances, smoother driving makes a noticeable difference.

To improve fuel economy:

• Accelerate gradually

• Maintain consistent speed

• Use cruise control on highways where possible

• Anticipate traffic to avoid unnecessary braking

A relaxed driving style is not only safer when touring, it also helps reduce fuel consumption.

 

Consider Eco Modes or Throttle Controllers

Throttle controllers are a popular upgrade for modern utes and 4WDs. Their main purpose is to improve throttle response, but many units also include eco driving modes.

These eco settings soften throttle input, which can encourage smoother acceleration and potentially help reduce fuel usage depending on driving style.

It's important to note that throttle controllers don’t magically reduce fuel consumption on their own, but they can help drivers avoid heavy throttle inputs that burn extra diesel.

Reduce Roof Load and Wind Drag

Roof racks are great for camping gear, swags and rooftop tents, but they can increase wind resistance.

At highway speeds, aerodynamic drag can significantly impact fuel consumption.

To minimise this:

• Remove roof racks when not required

• Avoid carrying unnecessary gear on the roof

• Keep loads low and evenly distributed

Reducing wind drag can noticeably improve fuel economy on long highway drives.

 

Consider Using Diesel Fuel Additives

Another option many long-distance tourers use is diesel fuel additives. These products are designed to help improve combustion, clean injectors and keep the fuel system running efficiently.

Over time, diesel engines can develop carbon build-up in the injectors and fuel system, especially if the vehicle is regularly used for short trips or lower quality fuel is used. Fuel additives can help keep the system cleaner, which may improve engine performance and efficiency.

When used correctly, diesel additives can help:

• Clean fuel injectors

• Improve combustion efficiency

• Reduce carbon build-up

• Improve engine smoothness

Many 4WD owners add a small amount of diesel additive when filling up before a long trip to help keep the fuel system operating at its best.

While additives won't dramatically reduce fuel consumption on their own, they can help ensure the engine is running as efficiently as possible, which is especially important when travelling long distances in remote areas.

Choose the Right Gear for the Terrain

Understanding when to use low gear and high gear can also make a difference to fuel consumption when travelling off-road.

When driving on highways or open gravel roads, keeping the vehicle in higher gears with lower engine RPM helps the engine run more efficiently and reduces fuel use.

However, when tackling steep climbs, soft sand, rocky tracks or technical terrain, switching to low range gearing can actually be more efficient. Low range allows the vehicle to maintain control and torque without needing excessive throttle input, which helps prevent the engine from working harder than necessary.

Using the correct gearing for the terrain helps:

• Reduce strain on the engine

• Improve vehicle control off-road

• Prevent excessive throttle use

• Maintain better fuel efficiency in difficult conditions                                                                                                                                                                                                    In simple terms, high gear for cruising and low range for tough terrain will help your 4WD operate more efficiently and keep diesel consumption under control during your adventure.

 

 

Keep Tyre Pressures Correct

Tyre pressures play a major role in how efficiently your vehicle moves down the road.

Under-inflated tyres create additional rolling resistance, which means the engine must work harder and burn more diesel.

Before any long trip:

• Check tyre pressures when tyres are cold

• Increase pressures slightly when carrying heavy loads

• Adjust pressures depending on terrain

Correct tyre pressures not only save fuel but also improve tyre life and handling.

 

 

Consider a Professional Dyno Tune

Many modern diesel engines are tuned conservatively from the factory.

A professional dyno tune can optimise the air-fuel ratio, throttle mapping and turbo efficiency, which may improve both power and fuel efficiency when driving normally.

When combined with a free-flowing exhaust system, the engine can sometimes operate more efficiently under load.

However, results vary depending on the vehicle, driving conditions and how the vehicle is driven after tuning.

 

Keep Your 4WD Serviced and Maintained

A poorly maintained diesel engine will often burn more fuel than necessary.

Regular servicing helps keep the engine operating efficiently.

Important items to maintain include:

• Air filters

• Fuel filters

• Engine oil

• Injectors

Even something simple like a blocked air filter can increase fuel consumption.

Choose Lightweight Recovery and Touring Gear

Many touring 4WDs gradually gain weight as more accessories and gear are added. While most of this equipment is essential for remote travel, choosing modern lightweight alternatives can make a noticeable difference to overall vehicle weight and fuel consumption.

Over the past few years, many off-road accessories have evolved to become stronger while also being lighter.

For example:

• Replace traditional steel snatch blocks with modern winch rope pulleys

• Swap heavy steel shackles for soft shackles

• Consider lithium batteries instead of traditional lead-acid batteries in dual battery setups

A typical lead-acid auxiliary battery can weigh 25–30kg, while a lithium battery providing similar capacity can weigh less than half of that.

By upgrading to lighter recovery and electrical components, you reduce unnecessary weight in your vehicle — which helps improve fuel efficiency, especially when travelling long distances with a fully loaded touring setup.

Share the Adventure With Friends

Another simple way to reduce fuel costs is to travel together and share vehicles.

Instead of taking two vehicles on a trip, friends can:

• Travel in one vehicle

• Split the fuel costs

• Reduce the total fuel used by the group

Not only does this save money, it can make the trip more social and enjoyable.

Consider Camping With a Tent Instead of Towing a Caravan

While caravans offer comfort and convenience, towing one can significantly increase fuel consumption, especially on long-distance trips or when travelling through hilly terrain.

A caravan adds considerable weight and aerodynamic drag, forcing your engine to work harder and burn more diesel.

For travellers looking to reduce fuel costs, using a tent, swag or rooftop tent setup can be a much more fuel-efficient option.

Benefits of lighter camping setups include:

• Lower overall vehicle weight

• Reduced wind resistance compared to towing

• Improved fuel economy on long highway drives

• Easier access to tighter off-road tracks

Many experienced 4WD travellers prefer swags, ground tents or rooftop tents because they keep the vehicle lighter and more capable off-road while also helping stretch every tank of diesel further.