Truly a flagship vehicle, the Infiniti Q45 debuted in 1990 as the top product offering from Nissan's luxury marque. At first, it was pitted against the Lexus LS400, BMW 7-Series, and Mercedes S-Class. As a luxury import, consumers were very pleased with the car's amazing performance. Unfortunately, the introductory model lacked some of the interior appointments and amenities that were common in the other cars in its class. It did not have chrome or wood trim on the interior, its leather seats were stiffer than the rest, and the first four years had a displeasing front grille and fascia. The Q45 underwent a couple of redesigns over its decade-and-a-half tenure, each of which more finely tuned the vehicle keeping performance and luxury in mind. Infiniti Q45 parts have always been high quality, it's unfortunate that the Q45 didn't perform as well in sales as it did on the road. The more affordable M45 took its place as Infiniti's flagship vehicle in 2007. Fun fact: Infiniti commissioned the assistance of Poltrona Frau, an Italian furniture maker, when designing the first generation Q45.