You would have to understand what kind of engine we are talking about here. This is not your ordinary V8.

The one in my Expedition is a 5.4 Liter 24-Valve SOHC Modular Triton™ V8 with "CVCT" (Continuously Variable Camshaft Timing)

This same Triton ™ V8 is not only offered in the Expedition but also the Ford F-150 Pickup (The truck on which the Expedition is based) and the F-150 is also Certified as an Ultra Low Emission vehicle. Ta Da!

Please note that the intelligent Triton™ V8 with CVCT was only offered until the 2005 model year onward. Any Expedition from the 2004 model year to the 1997 model year had the 2 valve per cylinder setup and no CVCT or special tuning, nor computer hardware to produce high performance. Still, even without those improvements the 2003-On Expedition was most certainly qualified as a Ultra Low Emissions vehicle.

Here is a article by Car & Driver (At the bottom of the article is some evidence that it is a Ultra Low Emissions vehicle) This is why Explorer4x4’s arguments never held up.

http://www.caranddriver.com/previews/1841/2003-ford-expedition.html




You got Emissions standards and Fuel consumption mixed up.
However the Expedition is capable of better fuel economy than what you posted. See my post when I first got the vehicle.

http://forum.imcdb.org/forum_topic-2082-Just_got_back___.html