Best thing about using the Google one - a lot of data comes from their cars which actually drive around the place!kennyp said:Sat nav relies on local authorities 'releasing' details of new housing estates ! Same where I stay - if there's a new 'phase' to an estate planned it can take ages before the up-date coms thru! Not (always) the sat na peoples fault ! Tom tom and garmin have problems in my area too ! (not that I'm defending Nissan) !!