Roof Rack Cross Bars Gas Mileage

6 0 l 100 km approx.

Roof rack cross bars gas mileage.

42 mpg roof rack with thule dynamic 800 aerodynamic cargo box. Adding an empty roof rack to a vehicle can drop the gas mileage by about 7 percent. The cargo roof rack carrier is very easy to install including all necessary hardware and mounts to your vehicle s cross bars with four u bolts. Other modifications you make to your vehicle particularly those to.

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. 5 6 l 100 km approx. It is designed to fit just about any factory or after market cross bars on any vehicle type with the exception of convertibles. Let s say that you drive 15 000 miles per year gas is 2 50 gal and your gets 25 mpg.

39 mpg thus the cargo box on the roof increased fuel consumption by about 5 compared to the baseline. A drop of 7 percent may not sound like much but it adds up over time. Even with the sport rack box on the roof it was only a 2 3 mpg hit on the highway. Drag coefficient increases by speed squared.

Since then i dont run around with a rack or crossbars unless i am using them. 5 9 l 100 km approx. A five percent change in fuel economy is worth 75 each year or. On my old tucson i left the crossbars on no difference in fuel consumption.

In fact it significantly cuts your highway mileage all the time it s installed whether there s weight up there or not. They also created an energy inventory model that included rack usage rates vehicle stock vehicle miles traveled through 2040 and vehicle level roof rack fuel consumption penalties. 40 mpg roof mounted thule xtender 739 ski carrier with skis. A few years ago i checked my economy with and without rack over a few thousand miles and i was taking a hwy 10 mpg hit with a rack installed.

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. Using a roof rack and toting bulky equipment on top of your car isn t the only thing affecting your gas mileage however.