How Clearing Your Car Boot Improves Fuel Economy This Winter

The Winter Weight Penalty: Why Your Boot is Costing You

As we navigate June 2026, Australian motorists are keeping a close eye on the bowser. In early June, seven OPEC+ nations agreed to a modest production target hike of 188,000 barrels per day to help stabilise a global market rattled by ongoing geopolitical tensions. Closer to home, the Federal Government recently announced that the temporary fuel excise relief will begin tapering off in July, reducing the discount motorists have been relying on. With household budgets already stretched by rising rego and insurance costs, finding everyday ways to maximise fuel efficiency is essential.

While you can't control international oil supply chains or government taxation, you can control how your vehicle operates. One of the simplest, yet most overlooked, methods to improve your fuel economy this winter is completely free: clearing out your car boot.

The Physics of Fuel Consumption

Every time you accelerate, your engine burns fuel to move the mass of your vehicle. The heavier the car, the harder the engine has to work. Automotive experts estimate that an extra 50 kilograms of weight in your vehicle can increase fuel consumption by 1 to 2 per cent. While that might sound like a small margin, over thousands of kilometres of driving, it adds up significantly.

This weight penalty is especially pronounced in stop-start city traffic. If you are constantly braking and accelerating between servos, traffic lights, and school drop-offs, that extra mass forces your engine to consume more petrol or diesel just to get back up to speed.

Common Boot Culprits to Clear Out

During the Australian winter, our cars often double as mobile storage lockers. Take a moment this weekend to organise your boot and remove the following items if they aren't needed for your daily commute:

• Sporting Equipment: Golf clubs, muddy footy boots, and heavy gym bags are common offenders. A standard set of golf clubs alone can weigh up to 15 kilograms.
• Winter Gear: If you've recently returned from a weekend trip to the Snowy Mountains or the Victorian Alps, don't leave your snow chains and heavy winter coats sitting in the boot.
• Prams and Baby Gear: If you know you won't be taking the kids out on a particular day, leave the heavy double pram in the garage.
• Tools and Hardware: Unless you drive a ute for work, hauling around a heavy toolbox or leftover supplies from a weekend DIY project is a surefire way to waste fuel.

Beyond the Boot: Other Winter Fuel-Saving Tips

Clearing out the cabin and boot is a great start, but winter driving presents other unique challenges for your vehicle's efficiency.

• Check Your Tyre Pressure: Cold weather causes the air inside your tyres to contract, leading to a drop in tyre pressure. Under-inflated tyres increase rolling resistance, meaning your car needs more energy to move forward. Check your tyre pressure at the servo at least once a month.
• Ditch the Roof Racks: If you aren't actively using your roof racks or ski box, take them off. They create significant aerodynamic drag, which forces your engine to work harder, particularly at freeway speeds.
• Minimise Idling: It can be tempting to leave the engine running to keep the heater blasting on a frosty morning, but idling gets zero kilometres to the litre. Modern engines warm up faster when driven gently rather than sitting in the driveway.

Take Control of Your Fuel Costs

Forming good habits—like a weekly boot audit and regular tyre checks—will keep your car running efficiently and help shield your wallet from market volatility. But the ultimate way to save money is to ensure you are always getting the best possible price when it's time to fill up.

This is where FuelRadar comes in. Designed for Australian motorists, our platform provides real-time fuel prices Australia-wide, helping drivers find the cheapest fuel nearby. Whether you're navigating the daily commute or planning a long winter road trip, FuelRadar takes the guesswork out of refuelling.

Available on iOS and Android, FuelRadar is your ultimate co-pilot for savings. You can even use our interactive map to compare prices along your route and avoid paying a premium. Download the app today, clear out that boot, and take control of your fuel economy this winter.