Fuel Efficiency Myths Every Aussie Driver Needs to Stop Believing
Rising fuel prices and the constant push for efficiency have left many Australian drivers searching for ways to cut costs at the pump. Unfortunately, the road is full of half-truths and persistent myths that promise big savings but deliver little more than disappointment.
To help you separate fact from fiction, let’s bust some of the most common fuel efficiency myths—so you can make smarter decisions and truly save money on your next drive.
Myth 1: Premium Fuel Always Saves Money
It’s easy to assume that paying extra for premium fuel means better mileage. The truth? Unless your car’s manufacturer specifically recommends it, regular unleaded works just fine. Premium fuel might improve performance in high-compression engines, but for most everyday cars, it won’t deliver better efficiency.
Myth 2: Idling Uses Less Fuel Than Restarting
Many drivers believe keeping the engine running while waiting is more economical than shutting it off. In reality, modern engines are designed to restart with minimal fuel use. Idling for more than a minute wastes more petrol than a simple restart.
Myth 3: Smaller Cars Are Always More Efficient
Yes, smaller vehicles are generally lighter and consume less fuel—but that’s not the whole story. Thanks to advancements in hybrid engines, aerodynamics, and transmission technology, some larger cars can now outperform older small models. It’s no longer just about size—it’s about smart engineering.
Myth 4: Air Conditioning Is Always Less Efficient Than Windows
The classic “air con vs. windows down” debate has been around for years. At low speeds, rolling the windows down is fine, but at highway speeds, the drag from open windows can actually make your car less efficient. In these situations, air conditioning may use less fuel overall.
What Really Works to Save Fuel
Instead of relying on myths, here are practical strategies that genuinely improve fuel efficiency:
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Maintain your car regularly: A well-serviced engine runs cleaner and more efficiently.
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Check tyre pressure: Underinflated tyres increase rolling resistance, wasting fuel.
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Drive smoothly: Gentle acceleration and braking conserve more fuel than aggressive driving.
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Lighten your load: Extra weight in the boot means your engine works harder.
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Plan your trips: Combining errands reduces unnecessary mileage.
For a more detailed breakdown of these misconceptions and proven tips, you can read the full guide here: Fuel Efficiency Myths Every Aussie Driver Should Stop Believing.
Why Busting Myths Matters
Fuel efficiency isn’t just about saving money—it also reduces emissions and helps keep your car in better condition long term. By letting go of outdated advice and focusing on proven habits, you’ll not only keep more money in your pocket but also contribute to a more sustainable future on Australian roads.

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