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Reasons Your Vehicle Has Poor Fuel Economy

Fuel Economy

As a car owner, you have probably experienced the shock of seeing how much it costs to fill up your vehicle. A significant factor in the cost is your car’s fuel efficiency. Read on to learn reasons your vehicle has poor fuel economy and practical advice on how to improve it, save money at the pump, and contribute to a greener planet.

Driving Habits That Hurt Your Fuel Economy

One of the primary reasons your vehicle has poor fuel economy is your driving habits. Aggressive driving, such as rapid acceleration and hard braking, can reduce fuel efficiency significantly. Additionally, constantly speeding or driving at inconsistent speeds will consume more fuel. To improve fuel economy, practice smooth and steady driving, avoid sudden braking, and maintain a constant speed within the speed limit. Another helpful tip is to utilize cruise control when driving long distances on highways to maintain a consistent speed. In fact, using cruise control is one of the best ways to improve the fuel efficiency of your truck or any other vehicle.

Fuel Economy

Maintenance Issues Affecting Fuel Efficiency

Poor vehicle maintenance can also drastically impact your fuel economy. For starters, improper tire inflation could increase rolling resistance, making the engine work harder and consume more fuel. Regularly checking and maintaining the correct tire pressure can help you save up to three percent on fuel consumption.

Another maintenance issue that affects fuel efficiency is a dirty or clogged air filter. This restricts the airflow to the engine, causing it to work harder and consume more fuel. Replacing a dirty air filter can improve fuel economy by 10 percent or more.

Issues with the exhaust system can also lead to a drop in fuel efficiency. If your vehicle’s exhaust system is not functioning optimally, it can restrict the outflow of exhaust gases, causing the engine to work harder. This is why increased fuel consumption can be one of the warning signs of exhaust system issues. Regular inspections and timely repair of the exhaust system components can significantly improve your vehicle’s fuel economy.

Lastly, a poorly tuned engine or malfunctioning oxygen sensors can significantly impact fuel efficiency. Fixing these issues can result in substantial fuel savings and improve your vehicle’s overall performance.

Fuel Quality and Its Impact on Fuel Economy

Do not underestimate the impact of fuel quality on your vehicle’s fuel efficiency. Low-quality fuel can lead to combustion problems, carbon deposits, and reduced engine performance. These issues contribute to higher fuel consumption and reduced efficiency. Make sure to use the recommended fuel grade for your car and consider using fuel additives to help keep your engine clean and running optimally.


Your vehicle might have poor fuel economy for many reasons, ranging from driving habits and maintenance issues to fuel quality. By addressing these factors, you can significantly improve your car’s fuel efficiency, save money, and reduce your environmental impact.


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