⛽ Gas Mileage Calculator
MPG, trip cost & annual fuel expense
Annual Fuel Cost Comparison
Improving Your Gas Mileage
The biggest factors affecting MPG: speed (55-65 mph is optimal; each 5 mph above 50 costs roughly $0.25/gallon more), tire pressure (underinflation by 10 PSI reduces MPG by 3%), air conditioning (reduces MPG by 3-10% in city driving), and aggressive driving (rapid acceleration and braking reduces MPG by 15-33% on highways). Properly maintained vehicles get 4-40% better fuel economy than neglected ones.