Portable sat-navs (particularly older, more power-hungry ones) tend to draw more power than a USB socket than provide. The cigarette lighter connection is able to restore battery charge more quickly, ...

Your car’s sat-nav should be taking its data from an SD card that’s inserted in a slot inside the glove-box. So, the first thing to check is that the SD card is seated in the slot correctly. But there ...

Most new model vehicles today will have satellite navigation systems built in. But if you aren't lucky enough to upgrade to a flash new car, with a shiny sat-nav that pops up from the dashboard it ...

It has revolutionised navigation, bringing military grade satellite positioning to the comfort of your car. But how does it work? James May steers us through the science behind sat-nav. All modern sat ...

Best of Reader Comments: Distraction device or helping hand? Sat-navs not only drive motorists to distraction, they've also been driving silicon.com readers to rage following a recent story concerning ...

Luke Westaway is a senior editor at CNET and writer/ presenter of Adventures in Tech, a thrilling gadget show produced in our London office. Luke's focus is on keeping you in the loop with a mix of ...