The Garmin
nuvi 57 is part of the
Portable GPS Navigation test program at
Consumer Reports. In our lab tests, Portable GPS Navigation
models like the nuvi 57 are rated on multiple criteria, such as those
listed below.
Ease of use
Ease of use score is based on an assessment of the physical interface, touch-screen control, programming logic, and readability. Testing considers such things as whether the database allows dynamic searching for addresses, if unlikely letters are grayed out, ease of entering into navigation menus upon start-up, ease of finding points of interest, and ease of adjusting common functions like volume, brightness, and map zoom setting.
Display quality
Display quality reflects image clarity, color accuracy, and contrast as judged by panelists who viewed text and photos, and on lab measurements.
Driving guidance
Based on the on-screen and audible information given to the user during navigation. Includes type and font size of on-screen information, ability to speak proper street names, languages supported, and amount of audible information given including descriptions of the next maneuver, including lane assist and reality view.