WLTPtesztelések

WLTPtesztelések refers to testing procedures for determining fuel consumption and CO2 emissions for new passenger cars and light commercial vehicles. The acronym WLTP stands for Worldwide Harmonised Light Vehicles Test Procedure. This global standard was developed by the United Nations Economic Commission for Europe (UNECE) and aims to provide more realistic and comparable results than previous testing methods.

The WLTP test cycle consists of different driving phases, including city, rural, and highway driving, with varying speeds and acceleration patterns. It also takes into account different driving conditions such as temperature, traffic, and optional equipment installed in the vehicle. The previous testing procedure, NEDC (New European Driving Cycle), was criticized for being outdated and not reflecting real-world driving conditions accurately, often leading to significantly lower official consumption figures than those experienced by consumers.

The WLTP test procedure is divided into four distinct speed classes: Class 1 (low speed), Class 2 (medium speed), Class 3 (high speed), and Class 4 (very high speed). Each class simulates different driving scenarios. The testing environment is also more controlled, with a dynamometer simulating road resistance.

The implementation of WLTP has led to generally higher reported fuel consumption and CO2 emission figures compared to the NEDC. This change is intended to provide consumers with more accurate information about a vehicle's environmental impact and running costs, thus enabling better informed purchasing decisions. The WLTP is gradually being adopted worldwide, replacing regional test cycles.