I have been to test drive today but got a rookie who could not answer my questions - is anyone able to help? I am currently a Nissan Juke driver due a change & looking at the Medianav S diesel. How many miles do you get from a tank of fuel ( the Juke has a tank the size of a peanut so always filling up!). I also do not understand why you cannot enter the full postcode in the sat nav and to do this I need RLink...£450 for 2 letters in a postcode seems quite steep! I want a reversing camera and seen some info that says this comes free with RLink and other bits that say you have to pay for it on top...really confused!