When a vegetable is put into circulation, consumption is tested and approved. There are mainly two types of homologation. Let's find out the differences together.
Whenever a new car is put into circulation, it clearly has to undergo a whole series of homologations. We are talking about both homologations in terms of safety, but also of consumption and pollution.
The most attentive and most passionate about the technical data sheets of the cars will know very well that there are mainly two homologation cycles for the consumption of a car. We are talking about the WLTP and NEDC homologation cycles.
The first stands for "Worldwide harmonized Light vehicles Test Procedure". In practice it is the latest and most updated homologation system.
A few years ago, it was now a habit to find huge differences between the homologation data and the real data on the consumption of the cars. For this reason the old NEDC approval cycle has been modified.
Currently, the procedure for homologating the cars involves a 30-minute test over a distance of 23.20 km. The average speed is 46.5 km / h with a maximum speed of 131 km per hour.
The car is not taken to the road, but cycles are carried out in a laboratory. The previous homologation cycle was also developed in the laboratory and entered into force even in 1970. To tell the truth, there was also a subsequent modification and introduction of an extra-urban phase.
Currently the NEDC cycle has been supplanted by the WTLP cycle. The previous cycle involved a test of just 20 minutes over a distance of 11 km. It has been supplanted as we have said because there are important differences in terms of real consumption on actual consumption.
The most attentive and most passionate also know that there is a third type of consumption standard or the so-called RDE. This aspect stands for Real Driving Emissions. This test is carried out on real roads, unlike the other two which are carried out in the laboratory. The aim is to observe the real and concrete variations between the values obtained in the laboratory and those on the road.
There is a certain margin of discretion that will have to be reduced as much as possible in the future, to try to give real and concrete data to all those who want to buy a car.
These values are very important and even if it does not seem like it, they greatly influence the choice of purchase of a car. In fact, when a person goes to a dealer and notices data that will not be absolutely real, he will therefore be disappointed.
The goal of the car manufacturers is therefore to create something as truthful as possible to avoid incurring inconvenience disappointments on the part of customers and then subsequently losing them in a few years.