2002-2006 Infiniti Q45: Year-to-Year Changes

2003 Infiniti Q45: Nissan's luxury-brand flagship sedan touted extra features for 2003. Added as standard were a power trunk lid closer, door-mirror "puddle" lights, and a one-slot in-dash CD changer (replacing a glovebox-mounted cartridge unit). A Luxury sedan served again as the base model. The Premium version included heated front/rear seats, a power reclining rear seat, rear audio/climate controls, and a rear-view TV camera that worked when the gear selector went into Reverse. Newly standard for this year's Premium sedan were front-seat fan ventilation, power open/close trunk lid, chrome or titanium-colored 18-inch wheels, and digital satellite radio with choice of XM or Sirius service. A Sport Package remained available. Nissan's Intelligent Cruise Control, a separate option, was designed to automatically adjust speed and maintain a safe following distance. Finally, the Q45 was newly certified as a Low Emissions Vehicle (LEV), a numerically higher rear-axle ratio was used, and minor trim changes occurred inside and out.

2004 Infiniti Q45: Available in Luxury and Premium trim, the Q45 gained a standard rear-view TV camera and monitor as its only significant change for 2004. It used the same display screen as the navigation system and audio/climate functions. Premium sedans had 18-inch wheels rather than 17s, an adjustable suspension, heated/cooled front seats, and reclining heated rear seats. Also included were the navigation system and Intelligent Cruise Control. A Journey option for the Luxury sedan added Intelligent Cruise Control, the navigation system, and run-flat tires.

2005 Infiniti Q45: Q45 gets a mild facelift and some equipment revisions for 2005. Recalibrations to the transmission for '05 are intended to improve response and smoothness. A Premium package adds heated and cooled front seats, reclining heated rear seats, satellite radio, and 18-inch wheels in place of standard 17s. It also includes radar cruise control designed to maintain a set following distance from other traffic.

2006 Infiniti Q45: The flagship of Nissan's luxury brand adds a Sport version for 2006. Like the base model, it has a 340-hp V8 and a 5-speed automatic transmission with manual shift gate. The Sport model uses a nonadjustable sport-tuned suspension and includes Infiniti's Rear Active Steer system that steers the rear wheels slightly to improve handling. Hands-free cell phone connectivitity is also standard for 2006.