 Early generations were based on the automaker's Japanese-market flagship sedan, the Nissan President, while models produced after 1996 were based on the slightly smaller Nissan Cima.Exports of the Q45 ceased after 2006, but the Cima continued to be sold in Japan until August 2010, when production of both the Cima and President ended.The first generation Q45 came to market in 1989 as a 1990 model.