Certificate of conformity
A COC (Certificate of Conformity) is a declaration of the conformity with the type approval of EC. The purpose of this document is to ensure the free movement of goods within the European Union, specifically for those goods that are subject to homologation and registration.
A COC is a producer’s declaration that the vehicle complies with the given approved type. This document contains information about the vehicle and its producer’s identification, type approval number, technical specifications and other data. The content of a COC is defined by EU regulation (Amendment IX, Regulation 92/53). Vehicles without the EU specification (e.g. vehicle manufactured for the U.S. or Japanese market) and older vehicles that have not been given the type approval of the EC yet, do not have an existing COC. Similarly, it is not possible to issue a COC for converted vehicles. A COC is only obtainable for passenger vehicles, motorcycles and tractors.
Certificates of conformity - History and legislation
In March 1992, the EU Council formally adopted the few remaining pieces of component-related legislation that are necessary to make the whole-vehicle type approval a reality for passenger cars. In June 1992, EU member state officials approved the adoption of EU legislation creating a single system for the certification of passenger cars, in turn defining the safety, and other technical, requirements. Legislation established an EU type approval system to replace the national schemes of the twelve member states. In 1996, the EU type approval system became mandatory. Vehicles with an EU type approval can be marketed anywhere in the European Community. Therefore, a vehicle only needs to receive the type approval certification in one EU country in order to be accepted in all of the other member countries.
To receive a type approval, products may either be brought to a testing facility or manufacturers may opt to maintain their own testing equipment. Nevertheless, US and EU automobiles still must be certified to this single set of rules by an authorised member state agency. A similar system was adopted for the type approval of two and three wheeled vehicles, which became effective on 1 January 1994.