Auto GPS Information

The GPS testing team at ConsumerReports.org posts the latest GPS news on this blog -- and it's free, unlike ConsumerReports.org's formal ratings charts. You'll find prices and previews of upcoming GPS units and GPS smartphone apps, and staffers give their general opinions of the products they review.

Magellan, Garmin, Lowrance, Morrow and Bendix/King all make GPS units specifically for aviation use. Information on aviation GPS units can be found at Avweb and Avionix.

Marine-use GPS units offer extras such as fish finders and resistance to salt water. Joe Mehaffey and Jeff Yeazel's GPS information site includes reviews of marine GPS models.

GPSPassion.com has news and user reviews.

User forums provide feedback and information from owners and prospective owners of GPS systems. Some examples include the user forums at GPSMagazine.com, GPSReview.net and GPSCity.com.

Manufacturers' websites are also a good source of information and specifications:

Garmin

Magellan

Mio

Navigon

Nextar

TomTom