Toyota Aygo X-Nav

The worst Sat Nav I have ever had and at over £400, the most expensive. Maps are completely out of date and it often takes you miles out of your way, rather than using the logical route. On one occasion it added an unnecessary 20 miles to my journey. Many safety cameras are missing or just wrong, and the alert sounds well over quarter of a mile up to half a mile before the camera, so you have forgotten about it by the time you get there. The map screen wipes out the time clock, so if you have to use nav a lot, you have to buy a stick-on clock or constantly check your watch! It 'forgets' nav if you switch the ignition off (eg to go into a petrol station) so when you start up again, you have to go through setup and agreement to get back to nav again.