Citroën,C4

The fuel consumption and CO2 emissions figures mentioned are determined according to the NEDC homologation regulations (R (EC) No. 715/2007 and R (EC) No. 692/2008, in the versions respectively applicable), which allows comparability with other vehicles. From 1 September 2017, the fuel consumption and CO2 emissions values of certain new vehicles are determined using the new World Harmonised Light Vehicle Test Procedure (WLTP), and the relevant values are translated back into NEDC to allow the comparability. Please contact your dealer for the latest information and to check if the values have changed. The values do not take into account in particular use and driving conditions, equipment or options and may vary depending on the format of tires. For more information on official fuel consumption and CO2 emission values, please read the guideline "Guideline for fuel consumption, CO2 emissions of new passenger cars" freely available in all point of sales or at …[example for France : ADEME - Agence de l’Environnement et de la Maîtrise de l’Énergie (Éditions, 2 square Lafayette, BP 406, F-49004 Angers Cedex 01) ou sur http://www.carlabelling.ademe.fr/.

WLTP: World Harmonised Light Vehicule Test Procedure (New and more realistic test procedure for measuring fuel consumption and CO2 emissions)
More informations at http://wltpfacts.eu
From 1 September 2017, certain new vehicles will be type-approved using the World Harmonised Light Vehicle Test Procedure (WLTP), which is a new, more realistic test procedure for measuring fuel consumption and CO2 emissions. From 1 September 2018 the WLTP will fully replace the New European Drive Cycle (NEDC) which is the current test procedure. Due to more realistic test conditions, the fuel consumption and CO2 emissions measured under the WLTP are in many cases higher compared to those measured under the NEDC.Test results on fuel consumption and CO2 emission values are recorded for different test phases. For vehicles type-approved in accordance with the NEDC, values are provided for ‘urban’ and ‘extra-urban’ conditions as well as ‘combined’ and ‘weighted, combined’ values. For vehicles type-approved in accordance with the WLTP, values are provided for ‘low’, ‘medium’, ‘high’, and ‘extra high’ as well as ‘combined’ and ‘weighted, combined’ values. In order to ensure comparability at least the ‘combined’ values of the applicable test method should be made available to consumers.