I have a 2014 Boxster and 2013 Cayenne with the nav system installed but I bought a Garmin GPS for each car because Porsche's system is worthless. You have to have the address with zip code to get to any destination. If you start to type the name of your destination and it finds a destination with the first two or three letters it shows that name and you cannot change it and continue to type the name of the destination you want to go to. Yesterday I entered an address while on a major highway and it told me to exit at the next exit and I drove 4 miles on city streets only to find the destination was one block off the highway I was on. Porsche has to have the worst nav system of any car available. Don't waste your money to put it on your car.