Legend to the map:

Green - European Union (28 countries)
Light grey – other 4 European countries (Switzerland, Liechtenstein, Norway, Iceland)
Black - Candidate countries: Turkey (WLTP applies for imported vehicles; for locally produced vehicles NEDC applies), Israel and outlying EU regions (still unclear): Réunion Island, Martinique, Guadeloupe, French Guiana, St. Martin, Mayotte
Dark grey - Partial implementation (planned): South Korea, Japan (WLTP without “extra-high” test cycle phase), India, China (CO2 emissions only, NEDC is used for consumption figures)