I don’t do many long journeys and so don’t use the sat nav often. On every occasion when I have use the sat nav it has taken me on a 20 mile journey to my 10 mile destination. (OK, I know - so why do I keep using it!!!) Yesterday I was on Portishead and put the post code in for a journey to Nailsea (5 miles). It flashed up a route which looked about right. I the set off and it took me north to get onto the M5 at Gordano and then down the M5 to Clevedon and then off the motorway on to 5 miles of single track 5 roads. The sat nav had me doing 15 miles for a 5 mile trip! . . . . . . . . . . . . What is going on?