What Towing Gas Mileage Should the EcoBoost F-150 Get?

Ford's all-new 3.5-liter EcoBoost V-6 for the 2011 F-150 is rated at 16/22 mpg city/highway (4×2) and 15/21 mpg (4×4). But what gas mileage would you expect towing a 9,000-pound trailer like the one we pulled (pictured above)? Our test truck was a two-wheel-drive FX2 SuperCrew with a 3.55 ratio rear axle.

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