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Bad Gas Mileage Causes: Fix Poor Fuel Economy


Poor gas mileage means that your vehicle is not running and operating effectively and efficiently specifically when it comes to fuel consumption. This also means that your are required to refuel your car more often.

Causes of poor fuel economy

Poor MPG is caused by the following factors:

Fuel injectors that are dirty: the building up of fuel varnish deposits inside the injectors hinder the injectors from performing their usual work of putting fuel into the car engine. This automatically results into lean misfires due to fuel as well as lean air mixture. In case the injectors leak fuel,it is given that less fuel will reach the engine making the engine to run less efficiently and waste more fuel. To solve this,you need to add a bottle of good and quality fuel injections into your tank of fuel. You should note that this may take some time before you notice any improvement.

Bad sensors for oxygen as well as air filters: lacking good and quality oxygen sensors and air filters reduces the level of gas mileage in your vehicle since the sensors for oxygen help in keeping the proper air and fuel mixture. The off balance of fuel and air results onto inefficiencies. When the air filters are clogged they cause poor gas mileage. To fix this problem, they need to be unclogged. It is good to note that for the engine to work at its peak performance, you need to clean the air filters thoroughly and at times replace them. Some of the benefits of changing/replacing air filters include reduced emissions since clogged air filers reduce the flow of air to the engine, increased efficiency of the fuel and prolongs of the life of your car engine as new filers trap debris and dirt that can damage the internal parts of the engine especially the pistons and the cylinders. New air filters also increase gas mileage and improve the performance of the engine due to optimal flow of air.

Poorly/non-functioning plugs: plugs are the ones that cause sparking combustion in your car engine. In case they are poorly working or they misfire,they affect negatively the gas mileage. Regular check-up as well as changing of spark plugs should be done to enhance gas mileage.

Poor and aggressive driving habits: aggressive drivers always accelerate very quickly instead of moderately. This result into more consumption of fuel and in turn results into using more gas than you require. This same case apply when your are revving your car engine. You should avoid quick accelerating so as to economize your car fuel consumption.

Having your engine on and your are not moving or parking your car. This is also called idling. Mostly this happen when drivers are waiting to pick someone or are trying to warm their cars during cold weather. Note that your car engine require few warming seconds. It is recommended that you turn off your car engine or put it in a neutral mode while waiting for somebody. This obviously minimize the fuel used and help in conserving the environment.

Obstructions in the exhaust system: obstructions may be as a result of crimped or crushed exhaust pipe or internal problems of the exhaust which include a muffler that has collapsed or clogged converter. This create pressure that leads to increased use of fuel. In this case exhaust system should be fixed.

-Use of wrong kind of oil (oil viscosity): Poor gas mileage is also as a result of the kind of oil used in a given vehicle. Oils that are very low when it comes to reducing friction result into gas mileage problems. You should also know that oil which has heavier viscosity increase the consumption of gas. Your car require motor oils that reduce friction greatly. Some of these fuels include synthetic oils and oils recommended by the car’s manual.

Running your air conditioner while driving: this cause wastage of a lot of gas as your car powers this system. It is good to turn of your air conditioner by riding while your car windows are open so as to increase the gas mileage. To reduce drag, you should close the windows at high speed.

Overheating of your car engine due to cooling system problems: a car engine that run hot after a number of revolution increase gas consumption leading to poor gas mileage. Heat also reduce the efficiency of the engine over a period of time. In case there is deficiency of air in your car cooling system, you should check the thermostat and fix it to solve this problem and to ensure that engine get up to temperature efficiently and quickly. Read more about overheating.

The number of revolutions made per minute: the higher the engine revolution,the higher the consumption of fuel. To solve this,you need to drive slower than usual with a recommended speed of fifty five (55) miles per hour.

How to fix poor gas mileage problems

To get the best fuel mileage you should do the following:

  1. Regular changing of your car oil so as to reduce more friction. This help you in getting the better gas mileage.
  2. Since air conditioner is a the worse consumer of gas, turn it off while riding. Use your windows to cool yourself.
  3. Always plan before driving.Know the specific routes that will economize your fuel consumption.Remember the more you stop after braking and accelerate so as to start,automatically leads to faster burning of gas.Use a smooth sailing route.
  4. You should avoid idling your engine since you waste your fuel while doing nothing.
  5. Changing your style of driving.Don’t accelerate your car when it is not needed as this reduce the use of gas.
  6. If it is possible,ensure that you light the load in your vehicle.This also improve gas mileage reducing the number of trips that you make to the gas station.
  7. Inflate your car tires properly. Inflating them well help in increasing the economy of fuel use besides making your tires look good.
  8. Embrace regular maintenance.This will help you in detecting factors affecting your gas mileage and finding solution to those factors which may include malfunctioning oxygen sensors,injectors and air filters.
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