Well, it works but at least in France the function is not very reliable. Not all highways in France are toll roads. I was north west of Marseille and Navigator always wanted me to leave the highway which is pretty insane in that area. I stayed on the autoroute and got a route not found error. Version 1.1.15.
may be toll roads are not correctly marked in free maps? Free maps are created by volunteers at www.openstreetmaps.org - anybody can join and help to make maps better using their local knowledge. May be you can also contribute?