The results show that nationwide roof racks are responsible for 0 8 of light duty vehicle fuel consumption in 2015 corresponding to 100 million gallons of gasoline per year.
Fuel consumption impacts of auto roof racks.
Use of roof racks requires vehicles to expend more energy due to aerodynamic drag.
Any roof carrier will cut your mpg significantly the same of course applies to roof racks and other cargo accessories.
When the roof rack was loaded with a ski box fuel consumption increased 10 11 and 12 3 compared with the clean roof conditions.
The roof rack mpg experiment 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.
Fuel consumption increased 2 6 2 and 1 1 compared with a clean roof.
For comparison the additional fuel consumption caused by roof racks is about six times larger than anticipated fuel savings from fuel cell vehicles and 40 percent of anticipated fuel savings from.
30 4mpg two front windows a third open 30 3mpg roof bars and laden roofbox 30 2mpg two front windows totally open 29 7mpg four tyres.
The gear with the most impact were the dual mountain bikes strapped to the roof which impacted the fuel economy by 31 percent or 9 mpg.
Sure it might earn you some cool points from some crowds but leaving a bike carrier luggage pod or other cargo toting device on top of your car can impact your fuel consumption and by a significant factor too.
How often do you see people needlessly driving around with roof racks on their roof.
The vehicle was equipped with an unloaded roof rack and driven at 43 5 mph 49 7 mph and 55 9 mph.
30 5mpg astra s baseline fuel economy.
Use of roof racks requires vehicles to expend more energy due to aerodynamic drag.
Even though they might look like they cut through the wind they could be.
He found that compared to the baseline of no roof rack the empty rack reduced his mpg by 12 7 and the roof rack with a bicycle reduced it by a whooping 27 3.