The SIMI was formed when the Society of the Irish Motor Traders Ltd and the Irish Motor Traders Association merged together in 1968.

The SIMI (Society of the Irish Motor Industry) is the official voice of the motor industry in Ireland. They are a member's organisation which consists of Dealers, Repairers, Vehicle Distributors, Wholesalers, Retailers, Vehicle Testers and many more important operators within the industry in Ireland. Thier role is to represent the views of the motor industry by campaigning to the Government, state bodies, the media and the motoring public.