Roof Rack Gas Mileage

Off the showroom floor the regal tourx gets 21 miles per gallon in the city and 29 mpg highway for a combined fuel economy of 24 mpg.

Roof rack gas mileage.

Mileage went from 41 mpg at 65 mph to 40 mpg. He compared the gas mileage of his car at 54 7 mph 88 kph with 1 no roof racks 2 an empty roof rack and 3 a mountain bike on the roof rack. Some drivers may see their gas mileage drop by as much as 20 percent depending on vehicle type and type of roof rack. The control test the tourx without roof rails.

The empty roof rack had a nearly 2 percent impact on fuel economy which translates to a little more than three quarters of a gallon of gas. So if your car usually gets 30 mpg on the highway and you add a full roof rack your highway gas mileage will drop to 24 27 mpg. Generally adding a loaded roof rack to your car will lower your gas mileage by at least 10 percent. Your fuel cost is ten cents mile or 1 500 year.

Berkeley lab says that roof racks cause as much as a 25 percent loss in fuel economy and accounted for almost 1 percent of national consumption in 2015. Let s say that you drive 15 000 miles per year gas is 2 50 gal and your gets 25 mpg. Drag coefficient increases by speed squared.