The Nissan Infiniti's luxury division updated its flagship sedan for 2005 by giving it a moderate face-lift, interior refinements and new convenience features. The rear-wheel-drive, full-size Q45 has a performance-tuned active suspension. Infiniti's Lane Departure Warning system is available on 2006 models, and a new Sport sedan with Rear Active Steer joins the
Infiniti Q45 lineup.
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