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Ford’s all-new 3.5-liter EcoBoost V-6 for the 2011 F-150 has been officially rated by the EPA at 16/22 mpg city/highway.
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I think it is 15/21Hmm...I wonder what the 5.0 will be rated at??
I expected a lot better from the Eccoboost than those numbers
No matter what you do there is a certain amount of energy (let us call it X) that you need to use to move a vehicle. The only way of reducing this energy on a standardised test is to reduce weight or drag. Therefore the only improvements in fuel economy between two essentially identical trucks with different engines is that caused by reducing the other component of fuel burnt, wasted energy (let us call that Y). Assuming you are starting with a fairly small value for Y (that is your vehicle is your vehicle is properly programed and its feedback mechanisms are well implemented) such as Y= X/3 (that is for every gallon you use moving the truck you are wasting 1/3 of a gallon on other things, like exhaust noise and power steering mechanisms), a virtual elimination of all waste will only lead to a 25% improvement in gas mileage... (that is you were burning 4Y before and you are burning 3Y now... (4Y-3Y)/4Y= .25)
Admitedly most estimates I have seen put X being about 1-2 Y, so there is a little more room, however you equally cannot eliminate all waste so...