Worldwide Harmonised Light Vehicles Test Procedure information
Technical standard for motor vehicles (WLTP)
This article is part of a series on
Driving cycles
Europe
NEDC: ECE R15 (1970) / EUDC (1990) (UN ECE regulations 83 and 101)
United States
EPA Federal Test: FTP 72/75 (1978) / SFTP US06/SC03 (2008)
Japan
10 mode (1973) / 10-15 Mode (1991) / JC08 (2008)
Global Technical Regulations
WLTP (2015) (Addenda 15)
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The Worldwide harmonized Light vehicles Test Procedure (WLTP)[1] is a global standard for determining the levels of pollutants, CO2 emissions and fuel consumption of traditional and hybrid cars, as well as the range of fully electric vehicles.
The WLTP was adopted by the Inland Transport Committee of the United Nations Economic Commission for Europe (UNECE) as Addenda No. 15 to the Global Registry (Global Technical Regulations) defined by the 1998 Agreement.[2] The standard is accepted by China, Japan, the United States and the European Union, among others.[3] It aims to replace the previous and regional New European Driving Cycle (NEDC) as the European vehicle homologation procedure.
Its final version was released in 2015. One of the main goals of the WLTP is to better match the laboratory estimates of fuel consumption and emissions with the measures of an on-road driving condition.[4]
Since CO2 targets are becoming more and more important for the economic performance of vehicle manufacturers all over the world, WLTP also aims to harmonize test procedures on an international level, and set up an equal playing field in the global market. Besides EU countries, the WLTP is also the standard fuel economy and emission test for India, South Korea and Japan. In addition, the WLTP ties in with Regulation (EC) 2009/443 to verify that a manufacturer’s new sales-weighted fleet does not emit more CO2 on average than the target set by the European Union, which is currently set at 95 g of CO2 per kilometer for 2021.[5][6]
^This is the spelling according to the adopted UNECE proposal; variant spellings include "Worldwide Harmonized Light-duty Test Procedures" (according to the UNECE press release).
^Agreement concerning the Establishing of Global Technical Regulations for Wheeled Vehicles, Equipment and Parts which can be fitted and/or be used on Wheeled Vehicles
Geneva, 25 June 1998
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