If you live in a fast-growing area, it's relatively easy to make a case for lifetime updates, because local roads and streets frequently change.
Otherwise, wait until you find that the maps are outdated enough to interfere with navigation.
The company hosts a list of these providers on its own website, mostly niche providers targeting specific countries such as Turkey and Ukraine or specialized usages such as navigating the Canadian Oil Patch.
For general-purpose use, you might turn instead to crowd-sourced maps.
To transfer updates and user information, the device must be connected to the same Wi-Fi network as the computer running Garmin Express.
Other Garmin hiking, sailing or fitness-oriented products, including several models in the Approach, Edge, fēnix, Forerunner and quatix ranges, can connect via Bluetooth to a smartphone running Garmin's Connect Mobile app.
If you start by setting up a my Garmin profile on the company's page, you'll be prompted to install it as part of the process.
The maps vary in quality, but can be very good in densely populated areas or places with a dedicated mapping community.
Garmin devices receive software and map updates as well – you just have to know how to get them.
In most cases you'll use Garmin's own Express software to update your in-car GPS device.
With Connect Mobile, you can update in the car or anywhere you have a cellular signal.
If your device comes with lifetime maps or a free first-time map update, you'll be prompted to install it when you install and run Garmin Express.