Lightweight aluminium has become "the material of choice" at Ford and will eventually be used across all model line-ups.
Chief executive Alan Mulally says at Detroit: "Over time, you'll see more and more aluminium across our product line.
"It makes the most sense on the bigger vehicles because of the value you generate."
Ford introduced an aluminium-bodied F-150 pickup at the show.
"Over time, it (aluminium) absolutely will move across our product line. It will be the material of choice."