Sat Nav did not work very well in Turkey, when I got to the bottom of the Uzumlu hill it told me to turn LEFT towards Antalya! Once we crossed the border into Greece it woke up and worked perfectly all across Europe and the UK. Some things to remember though; Sat Nav is not perfect so take maps as well to verify the route it is taking you. Make sure you have your Sat Nav settings correct for the route you want to take, ie. avoiding toll roads, A roads only, motorways, speed camera warning etc etc. If you do not do this you may find you are being taken where you least expect it. Last thing, make sure you regularly update your Sat Nav.