A good sat-nav is essential for finding your way easily when driving on unfamiliar roads, but not all cars come with them as standard - which is why you'll sometimes need a stand-alone unit. There are smartphone apps available that can do a similar job, too.
We've put together a handful of the best sat-navs in the UK to help you decide which is right for you. We found that some of the cheaper models are up there with the more expensive models - proving that you don't even have to go for the top model in the range for the most useful features.
You can have a look through our reviews of each device using the links to the left. Read on below to see how we tested each sat-nav and our final verdict on the best sat-navs in 2015.
Live traffic updates were an important part of our test, as making sure you're not caught in traffic is a major advantage sat-navs have over traditional maps. The accuracy of the updates was looked at, too.
Our route, which was the same for every device, covered urban and rural roads as well as motorways, to make sure the device takes you straight to the door of your desitnation as fast as possible. The sat-nav's user interface was also tested to see how easy it is to use.
Extras such as full European maps and Bluetooth hands-free also impress, along with a good screen. We rated services included, like map updates and speed cameras, and quote the best prices from a range of retail and online suppliers at the time of writing.
Garmin has two sat-navs on the podium, with the 3598LMT-D taking overall victory on account of its raft of features. The 2568LMT-D is great value for money and sits in third place, with the capable TomTom GO 6000 splitting the two.