The Infiniti QX is a luxury SUV built by Nissan's Infiniti division sold exclusively in North America. The first generation received its naming inspiration from the recognized four-wheel-drive terminology "4×4", with Infiniti adding a "Q" at the beginning to suggest it was a luxurious "4×4", borrowed from the Q45. The first generation also had a briefly available Japanese version called the Nissan Terrano Regulus. Consecutive generations are much larger, and the naming convention adheres to the current trend of using a numeric designation derived from the engine's displacement. The... Infiniti QX4 is a mid-size sport utility vehicle introduced in 1997 as a rebadged Nissan Pathfinder. It was released a year after Acura's introduction of the SLX and Lexus's larger LX 450. The QX4 was Infiniti's first entry into the SUV market segment. In the North American market, it was marketed as the "Infiniti QX4" while in Japan it was sold as the Nissan Terrano Regulus. Major differences between these vehicles and the Pathfinder include a more advanced four-wheel-drive system, a more upscale interior, and unique styling.
more