My 4.2 is about the same from 60 to 63 but closer to 55 is best and over 63 it starts losing mpgs. I usually hold it at 62 or so. Below 55 it seems to lose mileage. I think 55 is the best speed to go in my truck.

 

Fuel economy numbers should be out early next week, probably on Monday. Mike Levine just hinted to this on twitter. What do you all think they'll be?

 

I think the 2.7 numbers are going to be disappointing, that's why they have waited so long to release them. Real world testing mileage hasn't been any better than the base engine.

 

The news could be the mpg numbers, but I don't think that's what it will be. The news may be of the first production trucks coming off the line. The reason why it has taken so long is because of the factory change over and Ford will no longer share fuel economy numbers until govn't certification is complete. There is no reason for the EPA not to certify it. They just haven't gotten to it. Respecting GM, they didn't share their V6 Colorado mpg numbers until 3 days after the first trucks starting shipping to dealers.

 

Currently, Ford's most fuel-efficient F150 has a combined city/highway rating of 19 mpg. Ford said the rating is going up 20%. A 20% increase on that F150 would imply a combined rating of around 23 mpg, which would be the best in the industry for a gasser. F-150 has no problem getting into the 20s just driving around so that seems very realistic.

On the hwy I will say the 2.7L EB will be rated at 27 mpg which meets the 20% increase. It won't beat the diesel but it will be cheaper and run on cheaper fuel and be the better buy. The most "dissapointing" will be the 3.5EB at 23 mpg hwy and the 5.0L at 22 mpg hwy because they are mostly carryover. The 3.5 V6 I don't know what direction they are going with that so I won't make a guess other than to say it will have to be at least 26 mpg.

These are my guesses, not the actual numbers which have not been revealed.

 

Here's mine:

3.5 V6: 26 mpg
2.7 EB: 28 mpg
3.5 EB: 24 mpg
5.0 V8: 23 mpg

 

Too bad we can't have ethanol free gasoline. The fuel econ ratings are calculated using 100% pure gasoline as mandated by the EPA.

 

These are 4x4 combined ratings. Motor trend saw a 17% increase on the 2015 over 2014 on similar equipped 3.5tt. The 2.7tt was about 10% better than the 3.5tt truck, but it was MUCH lighter.

3.5L - 23 mpg
2.7tt - 21 mpg
5.0L - 19 mpg
3.5tt - 20 mpg (17% better than 2014 4x4 rating)

 

Ok using the same method, my guess for 2x4 highway:

3.5L - 28 mpg
2.7tt - 27 mpg
5.0L - 25 mpg ('old' engines get 16% improvement over 2014
3.5tt - 26 mpg

28mpg * 36 gallons = 1008 miles

 

2.7L will be the highest in fuel economy. It has grille shutters, auto start stop and is built like a diesel.

The New York Times:

By Ford’s calculations, the 2015 truck, equipped with a new 2.7-liter EcoBoost V6 and a 6-speed automatic transmission, will be capable of achieving “close to” 30 miles a gallon in the Environmental Protection Agency’s highway test when it goes on sale this year, according to engineers who spoke on the condition of anonymity because the ratings have not been formally announced.

A 30 m.p.g. rating would catapult the F-150 well beyond its competitors, led by the 2014 Ram 1500 HFE at 25 m.p.g. highway, and would handily top the thriftiest (23 m.p.g. highway) 2014 F-150. And — this is the payoff — it would bring Ford’s most profitable vehicle line closer to meeting the government’s future fleet mileage standards, which call for vehicles with a footprint as large as a full-size pickup to average 30.2 m.p.g. by 2025.

http://www.nytimes.com/2014/01/12/au...diet.html?_r=0

 

The current target date is not 2025, it's 2017. The EPA has a sliding scale to when reduced carbon footprints are allowed that spans 2017 to 2025. For Ford, they are in the position that they must hit 27.5 MPGs prox by 2017 with their light truck CAFE. I see this as being a little dubious on the part of Ford. They can run the EPA testing with a 3.5 EB and fully conform to the test yet be far outside the limits in real world driving due to the motor configuration. It'll be interesting to see if they get their hand slapped or the rules change or maybe nothing happen. There are truck makers like Toyota that are in serious trouble as they don't have the engine technology for these standards. I keep hearing from one of the main guys at Toyota that the Tundras days are numbered but then I can't see Toyota giving up the trucks sales either. Anyway, here's the EPA standards condensed:
http://www.epa.gov/otaq/climate/documents/420f12051.pdf

 

What is different about Ford being able to "Conform" by changing a configuration, but other manufacturers aren't? Is it something specific to the Ecoboost???

 

Yeah, I just hope people are cautious on that. For a 2x4 XL reg cab, the 2.7tt will be king. But that covers about 3% of the population. Given a scab 4x4, the 3.5 will be better. Hell, given a nicely equipped 4x4 screw, a 5.0 with tall gears might be better. Probably why the 2.7tt is not available on the high end trims. We saw the same thing last gen with the 5.0 vs. 3.5tt 4x4 screws.
MT tested a 4x4 scab with 2.7tt and it wasn't that impressive mpg-wise. On the last gen truck, the 3.5tt was always 1 mpg better than the 5.0 for highway, combined, and city, and in 2x4 and 4x4. It was too 'neat'. Real world showed otherwise

 

Dude, You nailed it.

First aluminum-bodied F-150 rolls off assembly line

http://www.detroitnews.com/story/bus...line/18839795/

 

I was at my buds dealership this morning and while he wasn't looking, looked at his 2015 dealer guide. The 2.7 in SFE form is rated at 28 hiway, 21 city and 23 combined per his guide. That truck comes ONLY with 245/70/17 tires which are going to be dinky at best and a 3.31 axle. Most will likely be ordered with the tow package with the optional 3.73 axle and a major upgrade on tires. You can add 1 mpg to the 2014 3.5 EB. I didn't get a look at the 5.0 but I did get my thumb slammed in his books. No idea how the 3.73 axle will hammer fuel mileage either. I assume everybody knows Ford dropped a bunch of models from the line up. There's no more STX, FX2, FX 4, and a couple of others. From the guide though you can pretty much get the same trucks just as a different model classification. Like an STX will be an XL with different packages. The FX 4 will be an XLT with different packages and so on. So the orders will look more like a GM order blank in that you pick a base truck level and add packages rather than specific models. That's the way it was years ago so it's probably not going to be a big issue.