Introducing the WLTP

    Sunday, January 28, 2018

    WLTP is a new emission test for cars that is currently being introduced in Europe. The test replaces the New European Driving Cycle test (NEDC) and shows much more accurate results. Is this the time to optimize mobility in a more sustainable way?

    Two people on bikes next to car


    WLTP stands for Worldwide Harmonised Test Procedure. This is a newly developed test to measure the emissions and fuel consumption of passenger cars. The WLTP replaces the New European Driving Cycle test (NEDC). It was about time for this innovation to take place because the NEDC test was getting old. The old test method was developed in the 1980s and has often been implemented. For now, the method no longer matches the current vehicles and driving conditions.

    With the WLTP, a car is examined much more extensively. The Real Driving Emission test (RDE) is, for example, used to test cars on the road. Cars will be checked on fuel consumption, CO2 and other polluting emissions such as carbon monoxide and particulate matter.

    "The WLTP test is many times more accurate than its predecessor"


    The tests are required to allow a car on the European market. The measurement is also used to check if the European Union is living up to the CO2 targets. In addition, the test allows a reliable comparison between cars on CO2 emissions and fuel consumption. The results can be used for the energy label of passenger cars.


    Because WLTP tests are much more accurate than the NEDC, they averagely lead to higher values. So the emissions themselves have not changed, but the results of the test did. The consequences are:

    • Higher CO2 values lead in theory to a more polluting fleet within companies.
    • Companies need to reconsider their mobility offer.
    • Uncertainty about the effects in CO2 values makes it difficult to estimate the price development of cars.

    What does the arrival of this new test means for you? Is it time to revise your mobility policy? Read more about the WLTP in practice!