- WLTP (Worldwide Harmonized Light Vehicles Test Procedure):
A European test that measures realistic vehicle range and emissions, simulating real-world driving. - CLTC (China Light-Duty Vehicle Test Cycle):
A Chinese testing cycle focused on energy consumption and range for electric vehicles in China’s urban conditions. - EPA Rating (Environmental Protection Agency):
A U.S. test for fuel efficiency and electric vehicle range, often more conservative than other tests. - NEDC (New European Driving Cycle):
An older European test that gives optimistic range and efficiency results, now replaced by WLTP.
There are four major tests used worldwide: EPA (Environmental Protection Agency), WLTP (Worldwide Harmonized Light Vehicle Test Procedure), NEDC (New European Driving Cycle), and CLTC (China Light Duty Vehicle Test Cycle). Among these, NEDC and CLTC are the most generous. EPA ratings, however, are considered the most reliable due to their realistic test cycles that closely reflect actual EV usage. WLTP, used by European manufacturers, is about 80-90% accurate compared to real-world driving. In short, EPA and WLTP give a more realistic view of electric vehicle range, while NEDC and CLTC often overestimate the range, which can mislead EV buyers.
