Gas Mileage Calculator

Gas mileage measures how efficiently your vehicle uses fuel. This calculator determines miles per gallon by dividing distance by fuel consumed, and can also calculate how far you can travel on a full tank based on your fuel economy.

1. 1

   Fill Tank Completely

   Start with a full tank and reset trip odometer

2. 2

   Drive Normally

   Drive until ready to refuel, noting miles traveled

3. 3

   Enter Values

   Input distance driven and gallons/liters to refill

4. 4

   View Mileage

   See calculated MPG/km/L and estimated range

• 1

  Track mileage consistently with the same fill-up method for accuracy

• 2

  Calculate separately for city and highway driving to understand patterns

• 3

  Declining mileage over time may indicate maintenance needs

• 4

  Weather significantly affects mileage - expect variations seasonally

• 5

  Keep a mileage log to track trends and detect issues early

• Not filling to the same level each time (fill completely for accuracy)

• Using trip computer estimates instead of actual gallons purchased

• Comparing mileage from very different driving conditions

• Not accounting for ethanol content differences in fuel