Once you study the side pictures of a Mondeo and a Contour, you'll notice that there is a distinct difference between the two. Mondeos have a subtle flare just above the rocker area(similar to a Taurus), while Contours have a sharp crease. The fenders also seem to be slightly different around the headlight area. I really don't think there are any shared panels between Mondeos and Contours. Much of their similarity seems to lie in the chassis.
