42 mpg roof rack with thule dynamic 800 aerodynamic cargo box.
Van roof rack mpg.
A close second was the kayak with 28 percent or a.
One thing to consider is that roof racks add wind noise and make the van less aerodynamic which can reduce gas mileage so keep that in mind.
5 9 l 100 km approx.
199 cubic feet of cargo space.
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.
Roof racks a drag on fuel economy by lawrence berkeley national laboratory both loaded and unloaded roof racks create drag reducing your vehicle s efficiency.
This means that adding an empty roof rack to a car that usually gets 35 mpg will drop the gas mileage to 32 5 mpg.
40 mpg roof mounted thule xtender 739 ski carrier with skis.
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.
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.
In fact it significantly cuts your highway mileage all the time it s installed whether there s weight up there or not.
A drop of 7 percent may not sound like much but it adds up over time.
With the metris mercedes benz cleans up nicely as far as the service and maintenance van category goes.
Feature story julie chao 510 486 6491 april 25 2016.
Adding an empty roof rack to a vehicle can drop the gas mileage by about 7 percent.
A ladder rack for your van may also be an accessory you ll want to consider especially if your van of choice is a sprinter or other high roof van.
Adding any rooftop carrier cargo box or ski rack doesn t come free.
5 6 l 100 km approx.
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.
6 0 l 100 km approx.