The WLTP Peugeot standard



Worldwide Harmonized Vehicle Test Procedure

The WLTP (Worldwide Harmonized Vehicle Test Procedure) protocol is used for the approval of vehicles for European Union type approval. It specifies a new test cycle and a new procedure for measuring fuel consumption, emissions of CO2 and regulated pollutants of light vehicles Passenger vehicles and light commercial vehicles (i) < = 3.5 tonnes under standardized (laboratory) conditions.


The WLTP protocol replaces the previous approval procedure (NEDC) which came into force in 1992. In 2017, all new models marketed for the first time are WLTP approved. Since September 2018, all vehicles sold must be WLTP approved. This new laboratory test protocol is supplemented by the measurement of pollutant emissions in real use: Real Driving Emission (RDE).


The new WLTP protocol allows consumers to have a more precise view of their vehicle's fuel consumption and CO2 emissions.


In terms of pollutant emissions, Peugeot vehicles equipped with Euro6.2 engines(i) the European standard which sets the limits for pollutant emissions , now respect the emission levels which have been required since September 2020.

Thanks to judicious technological choices deployed in anticipation of the regulations (SRC(i) Selective catalytic reduction   in diesel and FAP(i) Filter particulates  in gasoline), Peugeot vehicles are already WLTP approved (compulsory for all private vehicles from September 2018) which is closer to the real usage of customers.

The PSA Group has, moreover, publicly supported the introduction of this new procedure since the beginning of 2015. Furthermore, with the aim of always better informing its customers, the PSA Group has engaged in a transparency operation by publishing on the brand website, the consumption of its models since 2016 and their NOx(i) Nitrogen oxide   emissions since March 2018 in real conditions of use, according to a protocol developed with NGOs (T&E and FNE) and certified by an independent third party organization (Bureau Veritas).



Changes to standardized test procedures

  • Measuring emissions to consider adjustments
  • On individual vehicles
  • Increased distance traveled during cycles
  • Tests carried out at higher speeds
  • More responsive and realistic driving behavior
  • Extension of cycle duration


The new WLTP procedure aims in particular to ensure better representation of the real conditions of use of vehicles and their current technologies during approval. It defines stricter test conditions and a more dynamic driving profile than the previous NEDC cycle developed in the 1990s. Its construction was carried out using real driving data while the NEDC was based on driving profiles. theoretical.

WLTP also produces more precise values because it takes into account the specifications of each vehicle including all of its optional equipment, the influence of which on fuel consumption and CO2 emissions can be significant. WLTP values are, in some cases, higher than NEDC values for the same car. This does not mean that fuel consumption performance is degraded, it is simply a new measurement based on a more rigorous, longer benchmark, thus better reflecting the current uses of vehicles.


Test cycle Single test cycle Dynamic cycle more representative of real driving conditions
Cycle duration 20 minutes 30 minutes
Cycle distance 11 kilometers 23.25 kilometers
Driving phases 2 phases, 66% urban driving and 34% rural driving 4 more dynamic phases, 52% urban driving and 48% rural driving
Average speed  34 km/h 46,5 km/h
Maximum speed 120 km/h 131 km/h
Influence of individual options The NEDC does not take into account the impact on CO2 emissions and energy performance Additional features (which may vary depending on the model) are taken into account
Gear changes Fixed gear changes Waypoints calculated for each vehicle
Test Temperatures Measurements carried out between 20 and 30°C Tests carried out at 23°C, CO2 corrected at 14°C


Since September 2018, in addition to the WLTP approval protocol, all manufacturers must measure the emissions of their models in real driving situations (RDE) of all vehicles sold within the EU, and in Switzerland, Turkey, Norway, Liechtenstein, Israel and Ireland.

During these RDE tests, emissions of pollutants such as nitrogen oxides (NOx) and fine particles are measured on open roads for more realistic information.


What does WLTP mean?

WLTP is the acronym for Worldwide Harmonized Light Vehicles Test Procedure.

This is a new testing procedure that provides a more realistic analysis of a vehicle's fuel consumption and CO2 emissions. Since September 2018, all vehicles registered for the first time must be WLTP certified. The WLTP protocol is gradually replacing the old NEDC (New European Driving Cycle) procedure.

What is a WLTP driving cycle?

A vehicle's consumption and emissions always depend on each person's driving style, which is why a large amount of data collected around the world has been compiled for the WLTP standard. These data were used to define four representative phases with four average speeds: low, medium, high and very high.

During each of these phases, different situations are measured (braking, acceleration, stopping) in various ways to reflect everyday driving situations. The combination of these phases makes it possible to obtain what is called the “driving cycle”.

Fuel consumption is shown for four different driving situations, with an overall combined value for gasoline, diesel, hybrid and plug-in hybrid vehicles.

What does WLTP mean for me?

The entry into force of the WLTP protocol means that the fuel consumption and CO2 emissions indicated in the description of a vehicle more precisely reflect the values emitted in real driving situations.

The WLTP procedure, taking into account individual options (e.g. winter tires or glass roof), allows you to obtain more realistic values based on the exact configuration of your vehicle.

More realistic values naturally mean that vehicles equipped with a combustion engine will display higher consumption and emissions values, while electric vehicles (including plug-in hybrids) will display a reduced range. This may also lead to an increase in the number of vehicles affected by the CO2 tax. However, WLTP approved vehicles will continue to be taxed on the basis established by the NEDC. In the short term, tax systems based on CO2 emissions will therefore not change (CO2 tax, tax on company vehicles (TVS)).

What does RDE mean?

RDE is the acronym for “Real Driving Emissions”. This is a new procedure which makes it possible to measure emissions of pollutants such as nitrogen oxides (NOx) and fine particles.

As their name suggests, RDEs are measured on the open road under real driving conditions, not in the laboratory. These measurements are obtained using a smart device called PEMS (Portable Emissions Measurement System) attached to the rear of the vehicle during the test.

What does EURO 6 mean?

Euro 6 is the standard currently in force which sets the limits for polluting emissions. It defines maximum values for emissions of fine particles and nitrogen oxides lower than the previous Euro 5 standard.

Since September 2018, the Euro 6 standard has entered a second stage: the Euro 6.2 standard. It requires limits even lower than the previous stage in terms of fine particle emissions for vehicles equipped with gasoline engines.

What is selective catalytic reduction?

In order to further reduce the polluting emissions values of a vehicle, liquid ammonia, called AdBlue®, is added to the exhaust systems of diesel vehicles. Selective Catalytic Reduction (SCR) with AdBlue® can reduce nitrogen oxides by up to 90%. What remains is mainly water vapor, nitrogen and CO2.

What is an approval procedure?

Set of standardized parameters, notably the test cycle, which make it possible to approve vehicles.

Also, a unique approval procedure makes it possible to compare the consumption and CO2 emissions of different vehicles with each other.

The NEDC (New European Driving Cycle) was in force since 1992, it has been replaced by the WLTP since September 2018.

Why change the approval procedure?

The old NEDC procedure was deemed unrepresentative of the real use of our customers.

The consumption communicated, measured with WLTP, will be closer to the consumption observed by our customers.

Will my fuel consumption increase?

There is no impact on the consumption of your car, with these new WLTP values. The WLTP test procedure results in a higher CO2/g/km value for the same vehicle compared to NEDC, simply because it is a more rigorous and longer test - meaning that WLTP better reflects the current situation. In other words, the higher CO2 value does not mean an increase in fuel consumption, but rather a more realistic CO2 value due to the change in the way vehicles are tested.

What are the application deadlines?

Displaying the WLTP value for clients from:

January 1, 2019 for private vehicles
January 1, 2020 for utility vehicles.