Calculate your car's actual MPG and find out what you're really spending per mile.
Calculate your car's actual MPG. Enter the miles you drove since your last fill-up and how many gallons you put in.
Fill your tank completely, reset your trip odometer, drive normally until near empty, fill up again. Divide miles driven by gallons used. That's your real MPG.
EPA tests are done in controlled conditions. Real-world driving — city traffic, AC use, aggressive acceleration, cold weather — typically reduces MPG by 10–15% vs the EPA number.
For a non-hybrid gas car, 30+ MPG combined is good. Hybrids typically get 45–57 MPG. Electric cars get 100+ MPGe. The national average for all cars on the road is about 25 MPG.