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Gas Mileage Tracker - Track Fuel Efficiency & MPG Over Time

Take control of your vehicle's fuel efficiency with our comprehensive gas mileage tracker. This powerful tool goes beyond simple MPG calculations by tracking every fill-up with detailed analytics and visualizations. Record your odometer readings, gallons purchased, and fuel prices to build a complete history of your vehicle's performance over time. Our tracker automatically calculates miles driven between fill-ups, average MPG, total fuel costs, and spending trends. Interactive charts help you visualize your fuel efficiency patterns, making it easy to spot seasonal variations, the impact of driving habits, or signs that your vehicle needs maintenance. Export your data to CSV or JSON for tax records or personal analysis. Perfect for individuals tracking personal vehicle costs or businesses managing fleet fuel expenses. For context-rich trip planning, pair your logs with TravelGeo and look up historic weather impacts through WeatherArchive.

Add New Fill-Up

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How to Track Your Gas Mileage

  1. Record your odometer reading and fill-up details each time you get gas
  2. Enter the date, odometer reading, gallons purchased, and price per gallon
  3. The tracker automatically calculates miles driven and MPG between fill-ups
  4. View comprehensive statistics including average MPG, total spending, and trends
  5. Use date range filters to analyze specific time periods
  6. Export your data to CSV or JSON for backup or external analysis

Pro Tip: Consistent tracking helps you identify patterns in fuel efficiency. Sudden changes in MPG can indicate maintenance needs like tire pressure, air filter replacement, or engine issues.

Disclaimer: Gas mileage calculations and statistics are provided as-is for informational purposes only. Actual fuel efficiency may vary based on driving conditions, vehicle maintenance, weather, and other factors. All data is stored locally in your browser.