The Worldwide Harmonised Light Vehicle Test Procedure (WLTP) is the new vehicle fuel consumption and emissions testing procedure being adopted in Europe and other places as of next year.
I visited the site designed to educate consumers and other parties and read:
The WLTP laboratory test is used to measure fuel consumption and CO2 emissions from passenger cars, as well as their pollutant emissions. …
Dr Craig Idso talks about how real science that increasing CO2 provides a biospheric bonanza already evident in a global greening since 1982.