Use the certification [certification] attribute when describing your vehicles’ CO2 and Efficiency class in Germany. For Merchants in Germany, this is required. For hybrid-electric vehicles, two CO2 Efficiency classes (the combined rating and the efficiency of the vehicle with a discharged battery) are required to be provided in separate certifications.
Sub-attributes
This certification uses the following attributes in the following way:
- Authority 
[certification_authority](Required): “BMWK” for the German CO2 emissions classes for vehicles. - Name 
[certification_name](Required): “Vehicle_CO2_Class” for the overall CO2 class of a vehicle OR “Vehicle_CO2_Class_Discharged_Battery” for the CO2 class of a vehicle with a discharged battery. - Value 
[certification_value](Required): The value of the certification. Specifically, the value of the appropriate CO2 Emission Class. 
Shown on
Vehicle listings in Germany. For details, refer to the vehicle ads overview.