"BMW Z4 M40i Roadster: Combined fuel consumption: 8,1-7,9 (WLTP); Combined CO2 emissions: 184-179 (WLTP). All data according to WLTP. Further info: www.bmw.com/disclaimer Official data on fuel consumption, CO2 emissions power consumption and electric range were determined inaccordance with the mandatory measurement procedure and comply with Regulation (EU) 715/2007 valid at the time of type approval. In case of a range, figures in the NEDC take into account differences in the selected wheel and tire size; figures in the WLTP take into account any optional equipment. WLTP values are used for assessing taxes and other vehicle-related charges that are (also) based on CO2 emissions, as well as for the purposes of vehicle-specific subsidies, if applicable. Where applicable, the NEDC values listed were calculated based on the new WLTP measurement procedure and then converted back to the NEDC measurement procedure for comparability reasons. For more information on the WLTP and NEDC measurement procedures, see www.bmw.de/wltp. For further information about the official fuel consumption and the specific CO2 emission of new passenger cars can be taken out of the „handbook of fuel consumption, the CO2 emission and power consumption of new passenger cars“, which is available at all selling points and at https://www.dat.de/co2/. What's new about the BMW Z4. All you need to know."