Nowadays, the Electronic Data Interchange (EDI) is considered an indispensable tool for interchanging data and transactions between auto parts and vehicle companies. Since the decade of 80, the EDI was adopted by automobile industry and this process was led by vehicles manufacturers that had determined the adoption of this system for their supcliers. This research carried through an exploratory survey, to analyze how the implantation and use of the EDI, in the automobile industry, has been occurred, under the point of view of small and average companies of the sector, having observed positive and negative aspects associated to the implantation through five theoretical models that deal with the EDI and the Interorganizational Systems (IOS). Regarding to the stage of implementation of the EDI (model of Lummus & Duclus) it was observed that the companies are in the period of transaction, with low level of integration with internal systems. The amplitude of partners (model of Tuunainem) with that the companies carry through EDI are small, and the type of appropriation (model of Subramani) is exploitation. The analysis of the interorganizacionais relations (model of Bensaou and Venkatraman) disclosed that much few areas use this technology, and that the vehicle manufacturer use the coercitive power in the implantation process. Although this, the interviewed ones consider that exists reliable in the relation b its companies and vehicle manufacturer. Based on this survey, we verified that the characteristics and benefits gotten with the use of systems EDI for the studied companies of auto parts are very small, compared with the models.