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Under EU law, the Worldwide Harmonised Light Vehicle Test Procedure (WLTP) laboratory test measures fuel consumption and CO2 emissions from passenger vehicles, as well as their pollutant emissions.
WLTP introduces much more realistic and strict testing conditions, including:
In conclusion, WLTP provides a much more accurate calculation of a car's fuel consumption and emissions, which better reflects the on-road performance of the car you are purchasing.