the international motor show germany or simply international motor show, in german known as the internationale automobil-ausstellung (iaa – international automobile exhibition), is the world’s largest motor show. it is held annually, with passenger vehicles (including some motorcycles) being displayed in odd-numbered years in frankfurt am main, and commercial vehicles in even-numbered years in hanover, germany. before 1991 the show was held solely in frankfurt.
the iaa is organized by the verband der automobilindustrie (vda – association of the german automotive industry) and is scheduled by the organisation internationale des constructeurs d’automobiles. currently, the show in frankfurt occupies twelve buildings.