How to Calculate Fuel Economy (MPG)
Simple step-by-step instructions for gas mileage calculation:
STEP 01
Fill Tank & Reset Trip
Fill your gas tank completely and reset your trip odometer to zero.
STEP 02
Drive Normally
Drive until your fuel tank is low (e.g. 1/4 tank remaining).
STEP 03
Refill & Note Gallons
Refill the tank completely and record the exact gallons pumped and trip mileage.
STEP 04
Review MPG & Range
Calculate exact Miles Per Gallon, L/100km, cost per mile, and total tank range.
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Frequently Asked Questions
?How to convert MPG to L/100km?
Divide 235.215 by your US MPG rating to find Liters per 100 kilometers (L/100km). For example, 28.5 MPG = 235.215 / 28.5 = 8.25 L/100km.