Since the 1980s, European new car emissions and fuel economy tests have been carried out using the New European Driving Cycle (NEDC). From 1 September 2017, a new test has been introduced, the Worldwide Harmonized Light Vehicles Test Procedure (WLTP), to give both car buyers and owners a more realistic understanding of a car's performance.
WORLDWIDE HARMONIZED LIGHT VEHICLE TEST PROCEDURE
The new test method for fuel economy and emissions.