How many miles does the average car go on a full tank of gas?

The average passenger vehicle in the United States gets about 25 miles per gallon (mpg). A typical car's gas tank holds about 15 gallons, so the average car can go about 375 miles on a full tank of gas. However, this number can vary significantly depending on the type of car, the size of the gas tank, and the driving conditions. For example, a small, fuel-efficient car may be able to go over 400 miles on a full tank, while a large, gas-guzzling SUV may only be able to go 300 miles on a full tank. Additionally, driving in heavy traffic or in the mountains can reduce your fuel efficiency, while driving on the highway can improve your fuel efficiency.