![]() The most up-to-date models are sat-navs with live traffic data. Big names such as Garmin and TomTom offer cheap sat-nav options alongside their higher-priced units, so finding the right system for you can be tricky.Īs the name suggests, sat-navs use a combination of satellites and mapping software to determine a car’s position and plan the best route to a chosen destination. There are many free sat-nav apps for smartphones, but they work off your mobile phone data so it may be better to rely on a dedicated sat-nav unit.Īs you might imagine, there’s a wide range of portable sat-nav systems available at various price points – there are even dedicated units for bikers, which we have tested further down the page. Satellite navigation is now considered a necessity of the modern motorists and if a car doesn't have sat-nav built-in, there’s a very good chance that a portable sat-nav system will be employed by its driver.
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