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The amount of gas a vehicle uses will vary depending on your vehicle’s inner workings and driving habits. These two factors can significantly impact the amount of gas your vehicle consumes.

Don’t worry when you realize your vehicle uses more gas than it should because we’ve identified the causes. Here are some of the reasons why your vehicle uses more gas. 

Vehicle Components that Increase Fuel Consumption

 What Makes a Vehicle Use More Gas

Source: Pixabay

1. Oil

Using old oil can lead to an increase in fuel consumption. This dictates that you have to change your oil often. Check with the car manufacturer to understand the intervals in which you must change the oil.

With the advancements in gasoline and oil technology, you need to replace your oil every 7,000–10,000 miles for modern vehicles. This increases fuel efficiency and saves time and money compared to early automobiles that needed oil changes every 3,000 miles.

2. Bad Fuel Injectors

Having fuel injectors that are not functioning can result in poor mileage. This is because fuel injectors are the components in charge of supplying the engine with fuel. 

If there is some kind of leak, then a smaller amount of fuel will make its way to the engine, which will cause the engine to function less effectively.

3. Tires

If your tires are not properly inflated, they will have less grip, and you will have to rotate them more often to cover the same distance. It is essential to inflate your tires to the correct pressure since both over-and under-inflation can severely impact your fuel consumption.

If all of your tires have a pressure deficit of 10 psi, this might reduce fuel economy by up to 10 percent.

4. Air Conditioning

When you turn on your air conditioner, you are wasting gas being used to power the machine. Depending on the climate in your area, consider shutting off the air conditioner and driving with the windows open. You should roll up the windows to minimize air resistance when traveling at greater speeds.

5. Air Filters

Your vehicle’s gas mileage may drop by as much as 20 percent of its oxygen sensors, and air filters are in poor condition. The oxygen sensors ensure that the correct proportions of air and fuel are maintained in the engine, and an improper mixture can be wasteful.

Air filters might become clogged and must be unclogged to resolve the issue. It is necessary to clean the engine’s air filters to restore the vehicle’s maximum level of performance.

6. Sparks plugs

The spark plugs in your engine are the components responsible for igniting the combustion process. Your vehicle’s fuel economy may suffer if the spark plugs are fouled or the system is not functioning properly.

Habits that Impact Fuel Consumption

 What Makes a Vehicle Use More Gas

Source: Pixabay

1. Employing an Inappropriate Gear

You must always use the correct gear if your vehicle has a manual gearbox. In case you’re towing a lot of weight behind you, you should use the lower gear so your engine doesn’t have to work any harder than it has to.

When traveling at quicker speeds, you should also be sure to use a higher gear than normal.

Listen to your engine; you may be wasting gas if it sounds overworking or underworking.

2. Aggressive Driving

This negative behavior consists of driving too fast, accelerating too soon, and halting abruptly. These three behaviors will all increase gas usage.

You have to pick up speed gradually and keep up with traffic flow whenever possible. Give yourself sufficient distance from the person in front of you so you may stop gently without slamming on the brakes.

Ways to Reduce Gas Consumption

 What Makes a Vehicle Use More Gas

Source: Pexels

1. Carry Less Weight

If you tend to put everything in the trunk, consider it twice before loading up next time. Your vehicle’s fuel usage rises by 2% for every additional 50 kg it carries. Always try to carry less weight.

2. Cruising at Full Speed

If you are driving an automatic vehicle, the cruise control feature allows you to maintain a consistent pace. And remember to keep your manual transmission in a higher gear whenever it is safe. 

In each scenario, your engines will experience fewer revolutions per minute (RPM), decreasing the amount of gasoline consumed.

3. Drive with Anticipation

Keep your eyes on the road before you and plot your next move. Try easing up on the brakes as you get closer to the red light rather than slamming on them suddenly to come to a complete halt.

You might also begin your acceleration as you get closer to the base of a hill rather than as you get closer to the hill itself while approaching it. When you are going, try to avoid sudden accelerations.

4. Prepare a Route for the Peak Hour.

Driving in traffic that is constantly changing lanes puts a noticeable amount of strain on your vehicle’s engine, which results in increased fuel consumption. It is in your best interest to properly plan your commute to and from work so that you may avoid the busy times of day when traffic is at its worst.

5. Don’t Stay Idle for Long

Turn off your vehicle’s engine if you are idling for more than three minutes while waiting for anything or someone. Even when you aren’t moving, as long as your engine is running, it is wasting valuable gasoline.

6. Don’t Drive on Rough Roads

Avoid driving on dirt or gravel roads whenever possible. The vehicle loses energy for forwarding motion each time the wheels go up and down in motion, which causes the vehicle to bounce. This type of road can reduce your gas mileage by up to 30 percent. 


Now you understand why your vehicle consumes more gas. You see that these are causes you can manage. 

You may acquire some significant insights about the health of your car by keeping note of the distance you drive and the frequency with which you have to fill up the gas tank. These insights can help you save money on repairs in the future.

You may also get a sense of some driving behaviors you wish to change to prevent damage to your vehicle.