The 2006 Lincoln Navigator saw a redesign from previous models, maintaining a distinct luxury and style signature to Lincoln. With three trims - Luxury, Premium, and Ultimate - it captivated consumers with a 5.4-liter SOHC V8 engine outputting 300 horsepower paired with a 6-speed automatic overdrive transmission. It offered both Rear Wheel Drive (RWD) and Four Wheel Drive (4WD) options. A star of the infotainment system was the available THX II-certified audio system that delivered a premium sound experience. It featured an advanced safety package that included front and rear side curtain airbags along with front seat-mounted side-impact airbags. The Navigator underscored comfort as much as performance with its heated and cooled front seats and power-fold third-row seats