Infiniti's flagship Q45 premium luxury sedan receives a more distinctive, more aggressive exterior appearance for the 2005 model year, as well as a more luxurious interior dressed in sumptuous maple wood with chrome accents, a pure white instrument cluster, and new sport contour seats. Power is provided by a 340-horsepower/4.5-liter V-8 engine linked to a five-speed automatic transmission that's been recalibrated for improved downshift response and smoother acceleration. Voice-activated controls, DVD navigation system with 7.0-inch LCD information display screen, and RearView monitor are standard. Climate controlled seats and Intelligent Cruise Control with Preview Braking are optional. The Q45's performance-tuned active dampening suspension, previously available only on the Premium Package, is now standard on all 2005 Q45s.