Most Fuel Efficient Roof Box

The claw attachments make it easier and quicker to mount and remove the box.

Most fuel efficient roof box. A close second was the kayak with 28 percent or a. If you follow our coverage on fuel efficiency you know that real world mileage numbers don t always measure up to the official epa ratings. The box has tapers to a point and employs diamond textured aero skin to help it slice through the air and protect vehicle fuel economy. 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.

But if you. Keep in mind that your car uses more fuel when it has a roof box attached our test car used 12 1 more fuel with the roof box fitted than without. The quick grip mounting system is both tool free and very easy to use and with a bit of practice you can get the box on and off the car in about 5 minutes. Promoted as the quietest most aerodynamic and fuel efficient line of roof racks in the world yakima s wispbar takes direct aim at conservation minded drivers.

Roof boxes fix to your roof racks either with a basic u bolt system or a claw style attachment.