Do you want to be informed daily with the latest news from the motor world?A chance test of a Tesla Model 3 with a roof box reveals a quality that will surprise youIf you are a travel lover and you are considering a roof box to increase the cargo volume of the trunk, but you doubt the effect it will cause on fuel consumption, this interests you.A new study has shown that reverse-installed roof boxes improve aerodynamics and increase efficiency.One of the big problems when taking large family trips is that the volume available in the trunk remains really small, something that happens in a large number of models on the market, even the largest.The solution is invented, and much more efficient than coupling a trailer behind: roof boxes, offering a wide variety in the aftermarket, both from specialized suppliers and from the brands themselves.Although it may not seem like it, the roof boxes are subjected to demanding aerodynamic tests to ensure that, despite the fact that they increase the aerodynamic coefficient of the cars, they do not do so too much and thus do not incur greater fuel consumption, something that is a real key in the case of electric cars.Traditionally, the lines of these hoods have been smoother at the front and thicker at the rear, following the shape of passenger cars.Swedish sources explain that, a few years ago, an owner of a Tesla Model 3 came up with the idea of ​​reversing the sense of its position, with the thickest part on the windshield and the thinnest part at the rear.What might seem silly is not.The "inventor" of this idea showed that the hood placed in this position improved aerodynamic qualities, and reduced energy consumption by 16 percent.However, tests by chest-making experts have reduced this rate to just under half.That is, compared to the front mounting of the chest, fuel consumption, energy in the case of electric, can be reduced by up to 7 percent.The Swedes at Calix have designed a special roof box to be mounted in the opposite direction and in the typical shape, but always with an aerodynamic principle: the way the air leaves the roof box at the rear end, so that if This is narrower, less turbulence is generated and the air comes out cleaner.Even, it can also generate an extra aerodynamic load on the rear by having the back of the hood flatter.Reversing the direction of the roof box does not imply any sanction by the authorities, since what matters is that the anchoring system complies with the approval requirements, at the same time that it does not protrude more than allowed.Now, you know that roof boxes are no longer just an extra load space, but also reduce consumption.On your phone or tabletMuch more in Motor.esVery interesting collection of content...If you like motorsport, here is everything you need...At Motor.es we offer you some services that will help you in buying and selling your car...