we really love the RoadMate 1700 . we have a 2009 Buick with a navigation system in it and it be very incompetent compare to the RoadMate 1700 . we have a rv that it be great in , but you will need the long window mount for a rv . we also have a jeep Wrangler we use it in . we even use it in we Buick instead of the built-in one . it far exceed we expectation . we expect it to be about like the Buick 's system , but I can not stress more how much better this be .