Garmin nuLink! 1695LMU

Best Buy: You’ll want for little with the Garmin 1695. We tested this five-inch device last year, and it now gets lifetime map updates and costs less than £200. It still reroutes you in four seconds when you make a wrong turn, has Bluetooth, European maps and speed camera data, while traffic information is £44.99 a year after the initial 12 months free. Not the prettiest sat-nav on the market, but the mount is simple and the menus logical. Best of all, it can be used with the £100 ecoRoute HD dongle to display data from your car’s onboard computer.