Ignorance leads to negative comments about maps that are out of date (easily rectified via updates), while actual technology gets in the way when it comes to wonky voice activation and real time traffic updates that have limited coverage in some areas. Despite the complaints, most owners declined to go back to the dealer for any kind of solution. Some owners apparently purchase navigation systems because they like the fancy cachet, while others actually use the systems. Those that use their nav more than twice a week tended to be more satisfied, pretty much proving that navigation systems are complex and take time to learn how to fully utilize before they're more than an expensive electronic bauble. Having used the Infiniti navigation system, we can say that it is among the best when it comes to ease of use and accuracy, but unfortunately, we're not junketing enough to far flung locales to actually need it.
[Source: Automotive News - Sub. Req.]