The Worldwide Harmonized Light Vehicle Testing Procedure (WLTP) is a new emission testing procedure that will be introduced over the coming years. WLTP was developed within the United Nations Economics Commission for Europe (UNECE) with the support of the EU Commission, to ensure that testing accurately reflects real world driving conditions.
The WLTP will be implementing new parameters for emission testing that will be more comprehensive and take into consideration more variable factors that contribute to a vehicles CO2 output such as speed, engine temperature and start/stop intervals. Compared with the current NEDC procedure, the Co2 g/km value per vehicle is expected to rise due to the different calibration of engines and real driving emission on the WLTP cycle.
The introduction of the WLTP will have significant implications to the automotive industry in Ireland. With Co2 values per vehicle expected to rise between 4%-20%, this will lead to a price increase across all models due to higher VRT and road tax rates. This will potentially result in a fall in new car sales. All new vehicles will be required to have a WLTP reading from September 2017 onwards and by September 2018 all vehicles will be required to carry a WLTP reading. By January 2019 all consumer information will be based on WLTP.