Gas Mileage Calculator

Calculate your vehicle's gas mileage (MPG), cost per mile, and annual fuel costs. Track your car's fuel efficiency and monitor driving expenses with our free MPG calculator. Perfect for comparing fuel economy between vehicles and optimizing your driving habits to save money on gas.

Trip Information

Total distance driven on this tank
Fuel consumed for this distance
Current price per gallon

Mileage Results

Miles Per Gallon (MPG): 0.0
Cost Per Mile: $0.00
Annual Fuel Cost: $0.00
Trip Fuel Cost: $0.00

Fuel Efficiency Rating

Enter your data to see efficiency rating

Fuel Efficiency Tips

Maintain Steady Speeds
Use cruise control on highways and avoid rapid acceleration and braking to improve MPG by up to 40%.
Check Tire Pressure
Properly inflated tires can improve gas mileage by up to 3%. Check monthly and inflate to manufacturer specs.
Regular Maintenance
Clean air filters, proper oil changes, and tune-ups can improve fuel efficiency by 4-40%.
Reduce Weight
Remove unnecessary items from your car. Every 100 pounds can reduce efficiency by 1-2%.
Plan Your Trips
Combine errands into one trip and avoid peak traffic hours to maximize fuel efficiency.

Understanding Gas Mileage

Gas mileage, measured in miles per gallon (MPG), indicates how far your vehicle can travel on one gallon of fuel. Higher MPG means better fuel efficiency and lower fuel costs. The average new car gets about 25 MPG, while compact cars often achieve 30+ MPG and hybrids can exceed 40 MPG.

Your actual MPG depends on driving conditions, vehicle maintenance, driving habits, and weather. City driving typically yields lower MPG than highway driving due to stop-and-go traffic and lower speeds.

Tracking your MPG helps identify maintenance needs, compare vehicle efficiency, and adjust driving habits. Use our calculator regularly to monitor your vehicle's performance and fuel costs over time.

Frequently Asked Questions

How do I calculate my car's MPG?
To calculate MPG, divide the miles driven by the gallons of fuel used. For example, if you drove 300 miles and used 10 gallons, your MPG is 30.
What's considered good gas mileage?
Good gas mileage varies by vehicle type. Compact cars: 25-35+ MPG, SUVs: 20-25 MPG, trucks: 15-20 MPG. Hybrids can achieve 40-50+ MPG.
How can I improve my car's fuel efficiency?
Improve fuel efficiency by maintaining steady speeds, proper tire pressure, regular maintenance, reducing excess weight, and combining trips.
Why is city MPG lower than highway MPG?
City driving involves frequent stops, acceleration, and idling, which consume more fuel. Highway driving at steady speeds is more efficient.
How often should I calculate my MPG?
Calculate MPG every few fill-ups to track trends. Sudden decreases may indicate maintenance needs or changes in driving conditions.

Save More on Car Insurance

Efficient drivers often qualify for better insurance rates. Compare quotes and save hundreds annually.

Compare Insurance Rates

More Car & Auto Calculators

FTC Disclosure: This website may contain affiliate links. We may receive compensation if you click on links to third-party websites. This does not affect our recommendations or the calculator results. All calculations are for informational purposes only and should not be considered financial advice.