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. For 2021 and beyond, the show will be held in Munich.

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. Formerly, the show in Frankfurt occupied twelve buildings.

The 2011 show was held from 13 September to 25 September. The 64th edition of the show included 1,012 exhibitors from 32 countries and was attended by more than 928,000 visitors from 105 countries, 36% of them being trade visitors, among those 80% from the automotive industry, plus more than 12'000 accredited journalists from 98 countries. 183 world premieres were unveiled.

According to en.wikipedia