The fuel consumption and emission values are determined according to the prescribed measuring procedures (§ 2 Nos. 5, 6, 6a Pkw-EnVKV in the respectively valid version). The data do not refer to an individual vehicle and are not part of the offer, but serve only for comparison purposes between the different vehicle types. The fuel consumption and CO₂ emissions of a vehicle depend not only on the efficient use of fuel by the vehicle, but are also influenced by driving behaviour and other non-technical factors. CO₂ is the main greenhouse gas responsible for global warming. Further information on official fuel consumption and the official specific CO₂ emissions of new passenger cars can be found in “Leitfaden über den Kraftstoffverbrauch, die CO₂-Emissionen und den Stromverbrauch neuer Personenkraftwagen” (Guide on fuel consumption, CO₂ emissions and electricity consumption of new passenger cars), which is available free of charge at all sales outlets and from DAT Deutsche Automobil Treuhand GmbH, Hellmuth-Hirth-Straße 1, 73760 Ostfildern (www.dat.de). Illustrations may show optional equipment available at extra cost.