Now we know what Robert Palmer meant: the BMW M4 GTS.
Fuel consumption and CO2 emissions for the BMW M4 GTS:
Fuel consumption in l/100 km (combined): 8.3
CO2 emissions in g/km (combined): 194
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 http://www.dat.de/angebote/verlagsprodukte/leitfaden-kraftstoffverbrauch.html