How Does the Gas Mileage Calculator Work?

With volatile fuel prices, precisely monitoring your vehicle's Miles Per Gallon (MPG) is financially critical. Our precisely engineered Gas Mileage Calculator automatically calculates how efficiently your engine is performing today compared fundamentally to its official manufacturer rating.

Our Gas Mileage Calculator automatically handles the math for you. Simply input the length of your trip, the volume of fuel you required, and the cost of the gas to discover your exact real-life MPG and average cost per mile driven.

Calculating Your Real-World MPG Manually

If you want to manually check the math, here is the basic step-by-step process used to confidently and reliably discover your vehicle's real world performance:

• Step 1: Fill your tank completely full until the pump clicks off.
• Step 2: Reset your car's trip odometer exactly to 0.
• Step 3: Drive your vehicle normally until you need gas again.
• Step 4: Fill your tank completely full again, and note exactly how many gallons you put in.
• Step 5: Divide the exact miles driven by the exact gallons used. Example: 300 miles / 10 gallons = 30 MPG.