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What Affects Your Fuel Efficiency?

Save Money at the Pump with Expert Advice from Nambour Brake & Service Centre

Fuel prices aren’t getting any cheaper—and if your vehicle isn’t running efficiently, you’re likely paying more than you need to every single week.

At Nambour Brake & Service Centre (NBSC), we see it all the time: perfectly good vehicles using far more fuel than they should due to simple, fixable issues.

Here’s what could be affecting your fuel efficiency—and what you can do about it.

1. Incorrect Tyre Pressure

Your tyres play a bigger role in fuel efficiency than most people realise.

When tyre pressure is too low, your vehicle creates more rolling resistance—meaning your engine has to work harder and burn more fuel [1].

👉 NBSC Tip:
We regularly see vehicles on the Sunshine Coast running well below recommended tyre pressure. A quick check can instantly improve fuel economy and extend tyre life.

2. Poor Vehicle Maintenance

If your car isn’t serviced regularly, it will cost you more in fuel—simple as that. Common issues we see include:

  • Dirty air filters restricting airflow
  • Worn spark plugs reducing combustion efficiency
  • Old engine oil increasing internal friction

All of these force your engine to work harder than it should [2].

👉 NBSC Tip:
Routine servicing isn’t just about avoiding breakdowns—it’s one of the easiest ways to reduce fuel consumption.

3. Driving Style

How you drive has a massive impact on fuel use.

Aggressive acceleration, heavy braking, and high-speed driving can significantly increase fuel consumption [3].

👉 NBSC Tip:
Smooth, steady driving—especially in stop-start Sunshine Coast traffic—can noticeably improve your fuel economy.

4. Carrying Extra Weight

The heavier your vehicle, the more fuel it uses. We often see vehicles carrying unnecessary weight from:

  • Roof racks left on permanently
  • Tools or equipment not being used
  • Aftermarket accessories

Even small increases in weight add up over time [4].

👉 NBSC Tip:
If you don’t need it in your car—take it out. Less weight = less fuel used.

5. Modifications & Aerodynamics

Lift kits, oversized tyres, roof racks, and bull bars all affect how your vehicle moves through the air.

More drag = more fuel consumption, especially at highway speeds [5].

👉 NBSC Tip:
We work with a lot of 4WDs and American trucks—while modifications look great and improve capability, they do come with a fuel trade-off.

6. Fuel Quality Matters

Not all fuel is created equal.

Using poor-quality or incorrect fuel can reduce engine performance and efficiency, particularly in modern diesel and turbocharged engines [6].

👉 NBSC Tip:
Stick to reputable fuel stations and the manufacturer’s recommended fuel type.

7. Wheel Alignment & Mechanical Issues

If your wheels aren’t aligned properly—or if something is dragging (like brakes)—your engine has to work harder to keep the vehicle moving [7]. We commonly find:

  • Uneven tyre wear
  • Misalignment
  • Brake drag

👉 NBSC Tip:
If your car pulls to one side or your tyres are wearing unevenly, it’s costing you fuel.

8. Air Conditioning Use

Running your air conditioning increases engine load—especially in stop-start driving [1].

👉 NBSC Tip:
On hot Sunshine Coast days, it’s unavoidable—but excessive use at low speeds will increase fuel consumption.

The NBSC Difference

At Nambour Brake & Service Centre, we don’t just fix problems—we help you reduce running costs.

Whether you’re a daily driver, tradie, or managing a fleet, improving fuel efficiency means:

  • Lower fuel bills
  • Better vehicle performance
  • Longer component life

Book a Fuel Efficiency Check Today

If you feel like your vehicle is using more fuel than it should, chances are—you’re right.

Let our experienced team take a look

👉 Contact NBSC today and let’s get your vehicle running at its best.

References

  1. US Department of Energy. Fuel Economy Guide: Factors That Affect Fuel Economy. Washington DC: U.S. DOE; 2024. Available from: https://www.fueleconomy.gov
  2. NRMA. How car servicing affects fuel consumption. Sydney: NRMA; 2023. Available from: https://www.mynrma.com.au
  3. Australian Government, Department of Infrastructure. Green Vehicle Guide: Driving behaviour and fuel consumption. Canberra: Commonwealth of Australia; 2024. Available from: https://www.greenvehicleguide.gov.au
  4. US Environmental Protection Agency. Fuel Economy and Vehicle Load. Washington DC: EPA; 2024. Available from: https://www.epa.gov
  5. AAA. How Aerodynamics Affect Fuel Economy. Heathrow, FL: AAA Automotive Research; 2023. Available from: https://exchange.aaa.com
  6. Bosch Automotive Handbook. 10th ed. Stuttgart: Robert Bosch GmbH; 2018.
  7. Michelin. Fuel efficiency and tyre alignment. Clermont-Ferrand: Michelin Group; 2023. Available from: https://www.michelin.com

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