> all Q45 pictures

Infiniti has completely redesigned its flagship luxury sedan, the Q45. With this latest generation, Nissan's luxury division aims to strengthen the identity of the Q. According to Infiniti, the new Q "represents a total revision and rethinking of the flagship performance luxury sedan." No small thing.

> all Q45 pictures

The rear-wheel-drive Infiniti Q45 comes with a new 4.5-liter twin-cam V8 producing a very healthy 340 horsepower (up from 266) and 333 foot-pounds of torque. The transmission is a five-speed automatic with a manual shift mode.

It's available as one model, which retails for $50,500.

High-end electronics are standard, including traction control (TCS), Vehicle Dynamic Control (VDC), Electronic Brake Force Distribution (EBD), tire pressure monitors, high-intensity xenon headlights, Voice Control for the climate control, and an eight-speaker Bose 300-watt audio system that includes a six-disc CD changer.

Major options include a Navigation Package ($2,100), which uses a DVD-driven system with seven-inch LCD screen and 3D Birdview of the map on the screen; a Sport Package ($1,500), including a tightened active damping suspension and 18-inch, eight-spoke wheels with low-profile tires; a Sunshade Package ($500), including a power rear window sunshade and manual rear door sunshades; full-size spare tire and wheel ($180); and heated front seats ($450).

Or you can get the Premium Package ($8,000) that includes all of the above plus the RearView Monitor, a video screen that shows what's behind the car, as well as power reclining rear seats, rear seat audio and climate controls, and B-pillar face vents.