WLTP – Worldwide Harmonised Light Vehicle Test Procedure

That is to say, a globally harmonized control procedure for light commercial vehicles. The WLTP became mandatory in the EU in 2017 to have all cars homologated, and it replaced the previous and less accurate NEDC in monitoring performance and emissions. The test cycles are 3, classified based on the power-to-weight ratio, and last about 30 minutes, during which various driving conditions are simulated (acceleration, deceleration, braking, and maintaining speed) in different situations (urban driving, extra-urban, and highway)