Roof Top Box Fuel Consumption

Next we equipped a set of roof racks and a bike carrier attachment to the roof of the forester brimmed the tank once more and set off completing the exact same run a second time.

Roof top box fuel consumption.

A roof box we had a trailer before but hubby wants a roofbox now instead. The roof box is a long thin one as opposed to the squarer bulky ones. Their study was published recently in. The car is a 1 8t passat estate that generally returns around 35 36 mpg on a fast motorway cruise.

Add the roof box and the mpg deteriorated to 48 5 or 35 per cent less than the manufacturer claims the car is capable of. Meanwhile the nissan does 37mpg without the roof box against a claimed 47 1. The introduction of the paper describes particular harmful constituents. Fuel economy when using a roof box will be better than if you are carrying bikes on the roof or on a high mount tailgate carrier or using the roof bars on their own so it is very important that you remove the bars when you are not using them.

The impact of roof box on the increase of fuel consumption is measured at the speeds of 50 km h 1 90 km h 1 and 130 km h 1. 3 years previously i had just over 1 4 of tank left but with the box it was under 1 4 of a tank. Roof box and fuel economy. 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.

I have a full width halfords roofbox and on a trip to cornwall i did notice an increase in fuel consumption. Using a roof box will reduce fuel economy but probably not by as much as you would expect usually a few mpg. That 100km run chewed up 6 46 litres of petrol and was our baseline number. How much does a roof box affect fuel consumption.

I regularly travel in france and germany and am concerned that a roof box might increase my fuel consumption and mean that i have to drive more slowly. 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. However with the roof box it was only capable of 32 5mpg 31 per cent less than its claimed economy via the government tests. You will find it less of an issue at lower speeds at higher motorway speeds it will be worse.

Does any one have any experiance of how much the fuel economy will reduce by. Hi my final purchase regarding our return to camping is imminent. I need to buy a roof box for my 2003 audi rs 6 to accommodate my family s expanding paraphernalia. I am of to the alps in december and may need a roof box on the car.

They found that in 2015 roof racks nationwide were responsible for 0 8 percent of light duty vehicle fuel consumption or 100 million gallons of gasoline.