Having reviewed many vehicles in my day, I can tell you unequivocally that not all satellite navigation systems are created equal. Just checking the sat nav box on the options sheet doesn't guarantee you'll be getting a system that's easy to use and will get you where you want to go. Those who know me will tell you that I've often sung the praises of Ford's sat nav systems, specifically the ones found in Lincoln models. My first experience with these factory-installed Pioneer units came from a review of the Lincoln LS I did back in the day, and I was happy to find an equally agreeable sat nav in the Lincoln Zephyr we tested back in March. So permit me to feel vindicated when I inform you that J.D. Power and Associates has just released its 2006 Navigation Usage and Satisfaction Study in which the Lincoln Zephyr's navigation system received the highest rankign. J.D. rates these factory installed nav systems in six areas that include (in order of importance) ease of use, routing, system appearance, speed of system, voice directions and navigation display screen. The Zephyr's Pioneer unit did particularly well in the those first three areas that are weighted the most. One feature of the system with which I became particularly infatuated was its ability to leave a trail of electronic breadcrumbs on the screen's map showing you where you've driven. And in case you're wondering, the same unit is also available in the 2007 MKZ.

[Source: J.D. Power and Associates]