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Mpg on a 2003 7.3 liter crew cab?

The MPG for a 2003 Ford F-250/F-350 Super Duty with the 7.3L Power Stroke diesel engine (crew cab or otherwise) varies significantly depending on several factors:

* Driving style: Aggressive acceleration and high speeds drastically reduce fuel economy.

* Terrain: Driving in mountainous areas or off-road will lower MPG.

* Load: Hauling heavy loads significantly impacts fuel economy.

* Maintenance: Proper maintenance, including regular oil changes and filter replacements, is crucial for optimal performance and fuel efficiency.

* Tire inflation: Under-inflated tires increase rolling resistance and lower MPG.

While a *very optimistic* estimate might reach 16-18 MPG on the highway under ideal conditions with a light load, most owners report achieving 12-15 MPG combined (city and highway driving). It's entirely possible to see figures lower than 12 MPG, especially with heavier loads or aggressive driving.

There's no single definitive answer; real-world mileage varies greatly. You should consider the range provided as a general guideline, not a guaranteed number.