Ekologický certifikát „Modrý anděl“.
2003: The Citaro CNG received the "Blue Angel" environmental certificate and was the only bus on the market with the highly sought-after seal of quality from the German Federal Environment Agency.
2003: The Citaro CNG received the "Blue Angel" environmental certificate and was the only bus on the market with the highly sought-after seal of quality from the German Federal Environment Agency.