I've seen them advertised with air suspension. I've heard they get really good mileage, but like other diesels, don't know if the extra cost of the engine is worth it. I don't seem to see as many new Power Strokes as I used to, probably because of the $8000+ price tag of the PSD. It is rumored that Ford is working on a diesel F-150 but no telling what the engine will cost. In order to be better than the EcoBoost engines, it should get at least 30 mpg highway. Just my thoughts.