Reasons Behind High Fuel Consumption

Reasons Behind High Fuel Consumption

One of the important things we need to check when buying a car is the impressive fuel economy. There are many fuel saving technologies introduced by car brands. However, even if your car has an excellent fuel consumption rate, poor driving habits and lack of maintenance can adversely affect the mileage of your car.

In this guide, we will list the common reasons behind high fuel consumption and discuss the causes of poor fuel economy.

Measuring Fuel Consumption Rate
There are various units of measurement for measuring fuel consumption rate, but the most commonly used is kilometers per liter (km/L). A km/L indicates how many liters of fuel a car needs to consume to travel 1 km.

Fuel consumption rates vary from car to car. The higher the number, the more efficient the car is. For example, a car with a fuel consumption of 12 km/L is less efficient than a car with a fuel consumption of 15 km/L.

Causes of fuel inefficiency
Vehicle leaks
If your car’s fuel economy is poor, check for oil leaks
Without further ado, let’s dive into the common causes of high gas mileage.


High or low tire pressure
Tire pressure supports the full weight of your car. Maintaining proper tire pressure is essential for your safety and the safety of others, as well as for improving your vehicle’s performance. If your tires are out of shape, you will consume more fuel to keep your car moving due to increased rolling resistance and friction.

Sport Mode
When you use the Sport Mode feature while driving, your car’s power is enhanced with faster acceleration and more horsepower and torque. This puts more stress on the engine, resulting in increased fuel consumption. You can turn off the Sport Mode feature if excessive use of Sport Mode results in reduced fuel efficiency.

Increasing the load
The heavier the vehicle load, the more energy it takes to start the vehicle. It is recommended to minimize the vehicle load to improve fuel economy.

Dirty Injectors
Dirty injectors are one of the most common causes of reduced fuel efficiency. In order to mix properly with the air and burn it in the engine, the injection pattern of the injectors must be very precise. When gasoline injectors become dirty or clogged, the spray pattern is disrupted. Damaged injectors can quickly reduce engine efficiency and fuel economy.

Mechanical refueling
Use only the oil recommended by the vehicle manufacturer
Poor fuel quality
One of the most common causes of poor fuel efficiency is using fuel with an octane rating lower than that recommended by the automaker. Poor fuel quality can prematurely damage injectors and pumps, which reduces the performance of the entire system. Even worse, if left unchecked, it can lead to expensive fuel system repairs or a complete replacement of the faulty fuel pump.

Not Changing Your Oil Regularly
Not changing your oil on a regular basis can lead to a variety of problems, from poor fuel economy to serious engine damage. The longer you wait for an oil change, the more wear and tear your engine will experience. Oil deteriorates over time, causing the engine to run harder. The amount of fuel consumed per kilometer also increases due to reduced engine efficiency.


Bad Driving Habits
Hard braking and hard acceleration are two bad driving habits that reduce your car’s gas mileage.

When you slam on the brakes, the car’s transmission drops to the lowest gear. The lower the gear, the higher the engine speed, which requires the use of more fuel.

When accelerating, the harder you accelerate, the more fuel your car uses. You can reduce fuel consumption by pressing down slowly on the gas pedal and using the following fuel-efficient driving tips

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