How much does drag coefficient affect mpg?

“For a full-size truck, a change in drag coefficient of 0.01 is approximately equal to an improvement in fuel economy of 0.1 mpg on the combined city/highway driving cycle,” says GM’s Schenkel. “The same drag coefficient reduction can improve a car’s fuel economy by approximately 0.2 mpg.”

What is the formula for determining mpg?

To simplify, the formula is: miles driven ÷ gallons used = mpg. For example: If you drove 200 miles and needed 10 gallons of gas to refuel, you would be averaging 20 miles per gallon. Now that you know what your miles per gallon is, you can calculate your rate of gas.

How do you calculate fuel consumption based on distance?

Calculating a vehicle’s fuel consumption is not difficult. Simply note down the distance travelled since the last top-up and then take a note of how much fuel it consumed to travel that distance, then divide the litres used by the kilometres travelled and multiply by 100 to calculate consumption in litres/100km.

How do you calculate drag coefficients?

The drag coefficient Cd is equal to the drag D divided by the quantity: density r times half the velocity V squared times the reference area A. The drag coefficient then expresses the ratio of the drag force to the force produced by the dynamic pressure times the area.

Does lowering a car improve gas mileage?

Because lowering means getting stiffer springs, there is less weight transfer when you hit the gas or brake hard. This means you’ll enjoy faster acceleration and quicker stops. Lowered vehicles are more aerodynamic. Some owners of low-stance vehicles also notice improved gas mileage.

How do I manually calculate mpg?

Calculate

1. Get the miles traveled from the trip odometer, or subtract the original odometer reading from the new one.
2. Divide the miles traveled by the amount of gallons it took to refill the tank. The result will be your car’s average miles per gallon yield for that driving period.

How do you calculate mpg without filling?

Get the miles traveled from the trip odometer, or subtract the original odometer reading from the new one. Divide the miles traveled by the amount of gallons it took to refill the tank.