You may need to check your air filter. This may affect the way the vehicle performs, also air temperature will affect you. When it is colder you get better performance and you lower rpm's, thus better gas mileage.
The 2004 Ford Expedition has a V8 engine.
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The 2004 Ford Expedition has 16 valves.
The 2004 Ford Expedition is a gas-powered vehicle.
The 2004 Ford Expedition has a 4-speed automatic.
The 2004 Ford Expedition has a 19.1 degrees angle of departure.
The 2004 Ford Expedition has a drag coefficient of .41 Cd.
The 2004 Ford Expedition has single overhead cam (SOHC).
The 2004 Ford Expedition's turning circle is 38.7 ft..
The 2004 Ford Expedition has a 22.3 degrees angle of approach.
The curb weight of the 2004 Ford Expedition is 5218 lbs..
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