how do I figure out how much gas a car uses?

To calculate the amount of gas a car uses, you can follow these steps:

1. Check your car's fuel efficiency rating: Most cars come with a fuel efficiency rating in miles per gallon (MPG) which indicates how many miles your car can travel on a gallon of gas.

2. Keep track of how many miles you drive: Record the starting and ending mileage on your car's odometer before and/or after a driving trip.

3. Calculate the gas used: Divide the total number of miles driven by the car's MPG rating to determine how many gallons of gas were used. The formula is: Gas used = Total miles driven / MPG rating.

For example, if your car has a MPG rating of 30 and you drove 300 miles, the calculation would be: Gas used = 300 miles / 30 MPG = 10 gallons.

4. Monitor your gas consumption over time: By consistently tracking your mileage and gas usage, you can gain a better understanding of how much gas your car uses in various driving conditions and adjust your driving habits accordingly to improve fuel efficiency.