Convenience plus speed: the optional Professional Navigation System with GPS provides easy-to-follow directions, either as voice instruction or as arrows and/or a route map on the high-resolution 16:9 colour screen. The 8.8-inch screen, which also functions as a television, can be set to split-screen mode, so that the route map is displayed on one side and the arrow direction on the other. All destinations are stored on a DVD or CD-ROM. The Professional Navigation is standard on the X4 4.8i.
