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Our colleagues in the Consumer Reports Cars department have just finished reviewing the latest GPS navigation systems. Among the 55 models in our latest Ratings of GPS systems (available to subscribers) are units with interesting features, including the voice-activated Garmin Nuvi 880.

We’ve updated the way we score and display the models in our GPS Ratings, based on feedback from ConsumerReports.org readers and results from a survey conducted by the Consumer Reports National Research Center. Among the changes:

• Models are now divided into three types: basic navigators, navigators with traffic optional, and traffic-ready navigators. We’ve learned from reader feedback and survey data that real-time traffic is an important, distinguishing feature on GPS models—though we don’t prioritize it in the ratings. Greater emphasis is placed on core navigation abilities, ease of use, and information for the driver.
• We now score for some convenience features, particularly those that have safety and value benefits, like Bluetooth connectivity, trip computer, and whether an A/C power cable and USB cable are included.

These changes reflect the evolving nature of the GPS market, the growing number of options available to GPS shoppers, and your feedback on what you’d like to see in our Ratings. Read "New GPS navigation devices, ratings and methodology" on our Cars Blog for more details about the new test and evaluations we perform on GPS units. If you’re shopping for a new navigation unit, check out our free buying advice for GPS systems.

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