Drive Slowly

Go slow: Save Money, Fuel, Earth, Lives.

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MPG and Savings Calculator

This calculator will help you determine your current miles per gallon, cost per mile, and how much you can expect to save if you drive 10mph more slowly than usual.

The easiest method to collect this is to fill your tank up, and reset your trip meter (or write down your odometer). Then use the car normally.

When you get down to between empty and 1/4 tank, fill the tank up again. Keep your gas receipt (or make a log) which will tell you how many gallons of gas and price per gallon. Write down the trip meter or the change in the odometer on the receipt.

MPG calculator

Enter trip meter:


Enter gallons of gas filled:


Enter gas cost per gallon:

Click this button to calculate the miles per gallon:

Miles per gallon is:


Cost per mile is:

10 miles per hour slower than usual
It would be the same as paying dollars less per gallon.

Or it would be like paying per gallon instead of .

Or you could drive miles per tank of gas instead of miles.

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