How much fuel does an average car take?

The average car typically has a fuel tank capacity ranging from about 12 to 15 gallons (45 to 57 liters). Depending on the car's fuel efficiency, which averages around 25 miles per gallon (mpg) in the U.S., a full tank can allow for approximately 300 to 375 miles of driving. However, actual fuel consumption will vary based on driving conditions, vehicle type, and maintenance.