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How to Acurately Calculate Your Gas Mileage

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On: Thu, Jun 10, 2010 at 8:53AM | By: Sherry Christiansen

How to Acurately Calculate Your Gas Mileage

Nowadays, many consumers are becoming more and more conscious of how much fuel they consume. Many are implementing some simple techniques to save on gas mileage, such as using a feather technique on the gas pedal to accelerate or obeying  the speed limit. How do you know if your driving habit changes are making a difference? If you do not know how to accurately calculate your fuel consumption, it may be difficult to evaluate which practices actually help the most in gas expense savings, and which automobiles truly get the best gas mileage when comparison shopping.

Here are the steps to accurately calculate gas mileage on your automobile;

First fill your tank to full and write down the car’s mileage at that time. Next, fill your car up with fuel again whenever necessary. Write down in your notebook how many gallons of fuel you needed to fill the tank, note the current mileage on the odometer at the time of the second fill-up and write it down. Keep the notebook in your glove box so it is handy and you can keep a record of mileage between fill ups. Subtract the second mileage reading from the first mileage reading; the answer is how many miles you have driven since the last fill-up. For example, if your car's mileage was 18,451 at the first fill-up and 18,726 at the second, you drove 275 miles between fill-ups. Divide the mileage between the two fill-ups by the number of gallons you put into to your vehicle at the second fill-up. This number is equal to your vehicles miles per gallon. For example, if you drove 275 miles between fill-ups and put 10 gallons of gas in the tank to fill it, the MPG would be equal to 27.5 MPG on your vehicle.

There are many websites that have automatic calculators to estimate your car’s fuel economy. You can check fueleconomy.gov and actually track your automobile’s gas mileage, as compared to the manufacturer’s reported MPG on your car’s make, model, and year.


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