Mileage Calculator for Your Car & Truck to Calculate Miles Per Gallon MPG in 4 easy steps:
 

You should know how many miles per gallon your vehicle gets now. Then you can measure the what happened to the miles per gallon due to the changes you made. What was the affect of the changes you made to your vehicles miles per gallon performance.  Below is an example of how to calculate Miles Per Gallon. Here is a link to several gas saving tips you may want to try when using the mileage calculator information.
Fuel Savings Tips

Step 1.
Filling the vehicle's gas tank completely and writing down the vehicle's odometer reading (mileage).
Example: The last time the tank was filled, the odometer reading was 32,645.1 miles.

Step 2.
When it's time to refuel, filling the tank completely and writing down the number of gallons it took to fill the tank and the vehicle's new odometer reading. Once two odometer readings are taken, MPG can be calculated.
Example: The next time the tank was filled, the odometer reading was 33,001.3. It took 13.5 gallons to fill the tank.

Step 3.
Calculating the distance driven by subtracting the new odometer reading from the previous one.
Example: The distance driven would be 33,001.3 minus 32,645.1, or 356.2 miles.

Step 4.
Dividing the number of miles driven by the number of gallons it took to fill the tank. The result is the vehicle's MPG for that driving period.
Example: 356.2 miles divided by 13.5 gallons equals 26.4 miles per gallon.

The MPG for that driving period would be 26.4. You can use the mileage calculator below also.

If you are using EthosFR, don’t ever short change your tank on the recommended dosage of the product or you will not receive the maximum savings. Also, don't miss using the product in any tank, because it takes several consecutive, complete tanks before you maximize your savings.