Bad habits that cause drivers to waste fuel

Driving with a lead foot, slamming on the brakes, overloading the car with unnecessary gadgets... These are habits that can cause your car to consume more fuel than necessary.

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Fuel consumption depends on the type of vehicle, the condition of the vehicle, and objective factors such as temperature, distance, etc. In addition, the driver’s usage habits also have a significant impact on fuel efficiency. Here are some bad habits of drivers that cause cars to consume more fuel.

Aggressive acceleration and braking

The habit of flooring the gas pedal and braking hard is one of the causes of increased fuel consumption. In this case, the engine RPM is unstable, and the fuel combustion process is faster. To ensure power and traction for the vehicle’s operation, more fuel is needed than usual.


(Image: Luke’s Auto Service)

Therefore, drivers should gradually increase speed, maintain a steady throttle, and coordinate the gas pedal and gear shifts smoothly. This habit not only helps save fuel but also ensures safety when participating in traffic and extends the lifespan of the engine.

Driving with underinflated tires

Regularly driving with tires that have lower than standard tire pressure is also one of the causes of increased fuel consumption.


(Image: Getty)

Car technicians say that worn-out tires or low tire pressure increase the contact area between the wheels and the road surface, resulting in higher drag force and increased fuel consumption during operation.

Nowadays, many car models are equipped with a tire pressure monitoring system. Drivers need to pay attention to check and ensure that the tires are always properly inflated.

Not turning off the engine when the car is idle

Many drivers believe that turning off the engine when the car is stopped for a short period of time will consume more fuel than leaving the engine running. However, this belief not only causes the car to consume more fuel but also contributes to environmental pollution.

Research by the California Energy Commission (USA) shows that every minute the engine is running while the vehicle is stationary consumes the same amount of fuel as driving 1km. In order to support customers in the process of operating the vehicle more conveniently, most modern vehicles are equipped with an electronic fuel injection system with an automatic engine start/stop function, which helps reduce fuel consumption each time the engine starts. Therefore, vehicle owners should maximize this system and its supporting features to save fuel.

Excessive use of electrical devices in the car

Abusing electrical devices in the car such as lights, air conditioning, entertainment features, etc., also significantly increases fuel consumption. Therefore, turn off lights and air conditioning when not needed.


(Image: Car Throttle)

In the summer, avoid closing the windows and running the air conditioning at its highest setting. This makes the air conditioning system run at full capacity. Instead, lower the windows and open/close the car doors a few times to release hot air from the car. Use the air conditioning at a moderate temperature, increase the fan speed if necessary to cool down before deciding to lower the temperature.

Overfilling the fuel tank

Gasoline has the property of evaporation and expansion. If the fuel tank does not have enough space, gasoline can leak out and cause waste. Moreover, expanded gasoline in high-temperature conditions creates pressure on the fuel tank, posing a risk of explosion.

Gasoline should be filled to the proper level according to the manufacturer’s regulations. Avoid refueling during noon or early afternoon to limit fuel evaporation due to the high outdoor temperature.

Stockpiling too many items in the car

Many drivers have the habit of stockpiling a lot of items in the car such as blankets, food, drinks, camping gear, etc., that are not frequently used. This increases the weight of the vehicle and causes more fuel consumption.

A better way to save fuel is to only carry the necessary items for each trip. After the trip, remove the items from the car instead of keeping them from day to day.

Lowering the windows while driving at high speeds

When driving at speeds over 70 km/h, many drivers turn off the air conditioning and lower the windows to use the outside air to cool down the car and save fuel. However, this is actually a misconception. Opening the windows while driving increases wind resistance, causing the engine to work harder and consume more fuel.

Ignoring regular maintenance schedule

Failure to regularly maintain the vehicle increases the risk of malfunctions and unstable operation, leading to increased fuel consumption.


Regular maintenance helps fix issues and save fuel. (Image: Getty)

Proper maintenance helps address these issues. In addition, during maintenance, technicians will clean certain parts such as air filters, check and troubleshoot spark plugs, exhaust pipes, replace oil, replace coolant. These actions help the vehicle operate better and save fuel.

Source: vtc.vn

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Frequently asked questions

There are several common habits that can lead to increased fuel consumption and waste. These include aggressive driving behaviors such as rapid acceleration and speeding, which can lower gas mileage. Other habits such as idling the engine for extended periods, carrying unnecessary weight in the vehicle, and using the wrong type of motor oil can also contribute to fuel waste.

Aggressive driving practices, including rapid acceleration, speeding, and frequent braking, can significantly reduce fuel efficiency. These behaviors require more engine power and burn more fuel. Maintaining a steady speed and accelerating gently can improve gas mileage by up to 33% on highways and 5% on city streets.

Idling the engine for extended periods is inefficient and wasteful. Modern cars do not require lengthy warm-up periods, and idling for more than a minute burns extra fuel and produces unnecessary emissions. Turning off the engine when safe to do so, such as when stopped in traffic or waiting to pick someone up, can help conserve fuel.

Unnecessary weight in a vehicle increases fuel consumption. The heavier the car, the harder the engine has to work to move it, resulting in higher fuel usage. Removing unnecessary items from the trunk and avoiding carrying excessive weight can improve fuel efficiency.

Yes, using the wrong type of motor oil can impact fuel efficiency. Using a higher-viscosity oil than recommended by the manufacturer can increase fuel consumption. It is important to refer to the owner’s manual and use the specified type and grade of motor oil to ensure optimal engine performance and fuel economy.