Our calculator provides a highly accurate estimate of your vehicle's fuel efficiency when you input correct values. For best results, fill your tank completely before and after your trip to get precise fuel consumption measurements.

For the most accurate measurement: 1) Fill your tank completely and note the starting mileage. 2) Drive normally for a full tank. 3) Refill completely and note both the ending mileage and the amount of fuel added. Enter these values in the calculator.

Fuel efficiency can vary based on driving conditions, traffic, vehicle load, terrain, weather, and driving habits. Highway driving typically provides better mileage than city driving with frequent stops.

Good mileage varies by vehicle type. For compact cars, 30-40 MPG is excellent. For SUVs, 20-30 MPG is considered good. Hybrid and electric vehicles can achieve much higher efficiency. Our graph shows how your result compares to typical vehicles.