The integration of the disciplines of both the green operation and the complex supply chain (including purchasing, production and logistics) came into focus in the 1990s. In the literature review the focus of the researchers of this cross-sectional field was the automotive industry. It seems obvious that these closely-knit systems with high OEM dominance will offer more concrete results: it is difficult to resist when a given OEM starts to involve its first-, second- and third tier suppliers into its environmental schemes and processes. The Hungarian automotive sector can be characterized as somewhat one-sided: it consists of by few large international OEM’s (Audi, Mercedes-Benz, Opel, Suzuki, Raba), but by a large number of small-medium enterprises as 3^rd (or even 4^th!) tier suppliers. The aim of the paper was to find out whether companies acting as a member of more advanced chains show also better results in their “green” supply-chain-behavior. As a study description, in our empirical research, we have created a toolkit, and examined whether companies, which are using more sophisticated inter-organizational cooperation-tools, are more environmentally cautious, and if yes to what extent. As a result, discussion it can be stated that companies with a higher developed traditional Supply Chain have also a more developed green supply chain management system.