TomTom's new system also features an offline mode, so that when there's no data connection, the sat nav switches to its onboard software and maps so your navigation is never interrupted.

Both companies make the best sat nav systems out there ... Also unique to the GO Discover is TomTom’s New Live service, which includes up-to-day information on fuel prices, off-street parking ...

The first is a new app from TomTom that was previewed back in January but finally became official today. The long awaited TomTom app will turn your iPhone into a full feature navigation system ...