What is sat nav?

Sat nav, or satellite navigation, chooses the right roads to get you to your desired destination, and gives you turn-by-turn directions. It can also give an estimated time of arrival. Some sat nav systems use online features to give live traffic updates and divert you away from congestion. Sat nav systems use signals from satellites to find where you are and where you want to go. While sat nav is fitted in a large number of cars, the majority of new cars feature Apple CarPlay and Android Auto, which allows you to use your preferred mapping software from your smartphone directly through your car's screen.