What is the cost in fuel in 300 miles?

To calculate the fuel cost for a 300-mile trip, you'll need to know the vehicle's fuel efficiency (miles per gallon) and the current price of fuel per gallon. For example, if your vehicle gets 25 miles per gallon and fuel costs $3 per gallon, you'd use 12 gallons for the trip (300 miles ÷ 25 mpg). Multiplying the gallons used by the price per gallon, the total fuel cost would be $36 (12 gallons × $3).