BMW M240i Coupé:
Fuel consumption in l/100 km (combined): 7.3
CO2 emissions in g/km (combined): 167
BMW M2 Competition:
Fuel consumption in l/100 km (combined): 10.0 [9.2]
CO2 emissions in g/km (combined): 227 
BMW M2 CS(2):
Fuel consumption in l/100 km (combined): 10.4–10.2 [9.6–9.4]
CO2 emissions in g/km (combined): 238–233 [219–214]
The values of the vehicles labelled with (2) are preliminary.
The information on fuel consumption, CO2 emissions and energy consumption has been determined in accordance with the prescribed measurement procedure VO (EU)
715/2007 in the version applicable at the time of type approval. The figures refer to a vehicle with basic configuration in Germany and the range shown considers optional equipment and the different size of wheels and tires available on the selected model.
Further information about the official fuel consumption and the official specific CO2 emissions for new passenger automobiles can be found in the 'New Passenger Vehicle Fuel Consumption and CO2 Emission Guidelines', which are available free of charge at all sales outlets and from DAT Deutsche Automobil Treuhand GmbH, Hellmuth-Hirth-Str. 1, 73760 Ostfildern, Germany and on https://www.dat.de/co2
The values are already based on the new WLTP regulation and are translated back into NEDC-equivalent values in order to ensure the comparison between the vehicles. For vehicle related taxes or other duties based (at least inter alia) on CO2-emissions the CO2 values may differ to the values stated here.