Introduction to the new regulations

To make the life better and the " Zero Emissions " accessible to all

At Renault, we have in heart to make your lives easier and better. Since decades, we work to propose vehicles which consume and pollute less.  

We are engaged in the reduction of the impact of our vehicles on the environment. Thanks to our technology Zero Emissions (Z.E.) we are pioneers as regards durable mobility for all.   

The regulations evolve/move and we are actors of these changes. That starts with the taking into account of the new world procedure of test harmonized for the private cars and light commercial vehicles (in English WLTP, Worldwide Harmonised Light Vehicle Test Procedure). This new protocol makes it possible to the consumers to reach data of fuel consumption and emissions of the pollutants much closer to the daily use of their vehicle.

Understanding regulatory changes: WLTP and RDE

Since September 1 2017, WLTP came into effect, replacing protocol NEDC gradually (New Cycle European of Control in English NEDC, New European Driving Cycle). This new protocol, is added a second, called RDE (Emissions in Conditions of Real Control in English RDE, Real Driving Emissions). They give access to results on consumption and the emissions closer to your daily use. Discover them. 
What a protocol of certification?
It is about a series of obligatory tests which certify the lawful conformity of all the new vehicles arriving on the market. The goal is to check that all the vehicles comply with the rules of emission of pollutants, more commonly called anti-pollution standards. Currently, it is the Euro6 standard which is in force.  
The tests are carried out in laboratory and are carried out by independent organizations (for example, the UTAC in France). These tests are based on standardized cycles of control (lasted, speed, equipment, temperature, etc.) and the emissions of pollutants and CO2 measure, as well as the fuel consumption for the motor vehicles with combustion. These measurements thus make it possible to compare the performances of models of various manufacturers. This information is currently published in the booklets or commercial Internet sites of the manufacturers. 
Before September 2017, the New Cycle European of Control (NEDC) – reference since the years 1990 - was the protocol of homologation in force. This last becomes obsolete because it does not take into account the evolutions of the cars. Protocol WLTP will thus replace gradually NEDC. 

Which is the difference between the two protocols? To start, the cycle of control in format WLTP is longer and more representative than that of the NEDC. Speeds of test are higher, the beach of the temperatures tested is broader and all the equipment of the vehicle is taken into account (see the table below.) In synthesis, that makes it possible to obtain results much closer to those noted at the time of the daily ways carried out. 
NEDC and WLTP comparison

You will find below the differences between tests NEDC and WLTP: 

CaractéristiquesDuration of the cycle (min)

Distance (km)

Mean velocity (km/h)

Maximum speed (km/h)

% of downtime








The results of the tests are distant from those in real conditions of control. A result available by model/engine/gearboxThe results of the tests are distant from those in real conditions of control. A result available by model/engine/gearbox
The test conditions being closer to a real use, the results in terms of consumption and emissions are thus higher than those presented today in the booklets. Nevertheless, daily real consumption is not affected. They are simply a representation righter of consumption and emissions which, with WLTP, more precisely takes into account the type of vehicle but also the equipment and the selected options. This measurement will be estimated besides starting from a fork of results recorded during the test (contrary to a single result by model for protocol NEDC).
Emissions in real driving (RDE)
Even if the conditions of the cycles of control of test WLTP are more strict than those of protocol NEDC, they do not take therefore counts of it the whole of the parameters of real use of a vehicle - raison d'être of the test of Emissions in Real Control (RDE). 

Realized on roads under real conditions of control, this test supplements the homologation by checking the levels of emissions of the pollutants. 

The Renault Group already started to provide to its customers the results of the tests of emissions of pollutants RDE on the new vehicles registered after May 2016. For more information, go on

•   From September 2017 to September 2018, all the new vehicles put on the market (new modele/motor) must be approved according to test WLTP. 

•   From September 2018, all the new vehicles sold in concessions must be approved WLTP. 

•   Until the end of 2018, for more simplicity, the authorities require of all the manufacturers to continue to communicate only the results in reference NEDC. That means that the results of all approved vehicles WLTP must be converted in their equivalent NEDC until the beginning of 2019. These are the data which will be used to calculate the taxation associated in the various countries concerned. 

•   From January 2019, all the values of reference published will be exclusively data WLTP. 

•   Parallel to the deployment of the protocol of homologation WLTP, the standard of depollution which the vehicles must respect will evolve/move also gradually with an aim of reducing the environmental impact of the vehicles. That will lead on arrival of the Euro6D standard at the horizon January 2020. 
What it means to you
It is significant to recall that neither the performances nor the real fuel consumption are affected, whatever the protocol of homologation.  

However, the results of the levels of CO2 and consumption of fuel published by the manufacturers naturally will increase since new protocol WLTP reflects better the daily use of the vehicle.  

Concretely, WTLP is closer to the real use than NEDC but neither the performance nor the fuel consumption of your vehicle affects. 

To facilitate the fall of the fuel consumption

We will continue to approve our vehicles according to the regulation in force. 
From January 2018, Renault will thus market the first vehicles approved according to the new procedure. And as of September 2018, all the new Renault vehicles sold in the networks will be approved WLTP. 
Since our objective is also to help you to take an active part in the reduction of the environmental impact, we offer a whole panel of intelligent and responsible solutions to you, through our program Driving ECO2: 
Driving ECO2 is a program aiming at reducing the fuel consumption and the CO2 emissions, front, during and after control, by optimizing the use of the vehicle and by using only certain specific components of the car. Driving ECO2 is composed of embarked and not embarked functions :
  • The embarked functions include an indicator of style of control, an indicator of shifting of speed, a button of mode of control éco, the possibility of receiving an assessment of the way provided with a éco-score, and thanks to the éco-coaching, with the councils for a éco-control in real time in order to optimize the fuel consumption.   
  • The not-embarked functions include for example the formation business-to-business, the eco_score and the drives eco_driving.
  • For more information on our program Driving ECO2, consult our site... (to be seen with digital corp / local)

To go beyond the expectations of the market and the changes of regulations

Renault conforms to these new regulations (protocols and standards) and continuous with being proactif by laying down additional objectives:
  • In response at the diesel request of motorizations of the market, we will adapt our diesel engines to the technology of selective catalytic reduction to reduce the emissions of pollutants in real situation. 
  • All the new motorizations with gasoline will be equipped with particle filters, offering at the same time a better performance as well as a reduction of the pollutant emissions and fuel consumption. 
  • From here 2022, we will propose 8 new electric models Z.E. 100% and 12 new electrified models (HEV, P-HEV).