A higher-MPG car costs less to fuel. See how much you'd save each year.
A fuel efficiency calculator shows the annual and multi-year fuel savings of a more efficient vehicle, comparing your current MPG with a higher-MPG car.
Fuel cost is miles driven divided by MPG, times the price per gallon. Because MPG is in the denominator, improving it has an outsized effect: going from 22 to 38 MPG can cut a fuel bill by nearly half. The more you drive, the larger the annual savings.
Fuel savings are only part of the decision. A more efficient car may cost more upfront, so compare the yearly and lifetime fuel savings against any price premium. Over many years and miles, efficiency can pay for itself, but the answer depends on your mileage, gas prices, and how long you keep the car.
A lot, because MPG is in the denominator. Going from 22 to 38 MPG can cut your fuel bill by nearly half; the calculator shows your exact savings.
Compare the lifetime fuel savings to any price premium. The more miles you drive and the higher gas prices are, the more efficiency pays off.
This compares gas MPG. For an EV, our electric-vs-gas calculator compares energy cost per mile directly.
See the exact formula and a worked example on our methodology page.