My wife is 80% thru a 900 mi drive with.four kids and no trailer. Avg mpg 11.3. You can't even hear that stupid engine......

 

How many miles are on the truck?

 

Yea that's about what my 08 350 SD V 10 makes. They have about the same HP and torque. There are no free lunches! That's why I will not take the new 50.5 K FX4 with ecoboost I ordered on oct 20! I will go ahead and get a raptor with a real motor and more HP and torque, and about the same fuel economy! And not much difference in price. And raptors have a lot more cool factor thrown in for free!

 

id say something is very wrong with your wifes truck. i got 11 mpg driving up a grade in a 50 mph headwind. i do alot of in town driving, with a very heavy foot and it gets 14.7. i can get 18 mpg at 80 to 85 on the highway.

have your wife check the E brake.

take it to the dealer

 

I know you were kinda kidding about the e-brake,

but these do have a nice feature to keep that from happening. If you drive more than 3mph with the e-brake engaged, the warning chime shounds and the dispalay will show "parking brake engaged!" or something similar.

did it once it works

to the OP, it almost sounds as if the truck thinks it is seeing boost all the time and is dumping fuel to compensate. I agree with this guy ... take it to the dealer! something is likely very wrong.

 

Not sure if the US trucks have the option for the display to read in Litres/100 kilometers? Our Canadian trucks have both. If it is reading in L/KM 11 would would be approximately 20 MPG. Just something else to check.

 

...about the same fuel economy?



Now that's funny! 12/16 is "about the same" as 15/21?

The annual fuel cost alone would average nearly $900/year at 15,000 miles each year. That's like comparing my 5.0L Mustang GT with a 2012 Focus!

 

5000 on the truck. My exact thought was I should have bought a 6.2.... Raptor. But the piece of junk cant be had with a front bench.. Have four boys. Do love the 3.5 power. Pulls 11k lbs like its not there.

 

If you read the fuel economy #'s that people are posting in real life, the Ecoboost is sucking. It ain't the wonder drug cure that everyone claims

Still, that is very low mileage.

Is your wife running E-85 because it's cheaper? That crap is pure swill and causes a 3-5 mpg reduction...and if I'm not mistaken, you aren't supposed to use it with the EB

 

Hrmm, most of the posts I see put the EB right where it claims. Don't take 1 or 2 people getting poor mileage as the gospel. Most people only post on these forums if there is something wrong, not if everything is doing fine!

 

I don't think anyone expected it to be the "wonder drug cure" or anything like it. But every time I go looking for this on FTE, including right now, I see lots of instances of people doing very well on gas with the EB. Some guys are claiming 20s at 75 MPH. Find me a 6.2L truck that can claim the same, or even close.

 

I am not sure. I am seeing many that report numbers in line with the EPA estimates. Then there are quite a few with lower numbers, but once you start asking for details, some go 80mph on the highway, drive like maniacs in town and / or have a lift and bigger tires. Maybe there are a few bad apples out there who get a bad mileage.
But I get the impression that some just had unrealistic expectations to begin with. Those probably would get lower than EPA numbers with any other engine as well, but with the EB the complaints are coming in.
I will see when I get mine. In the past, with all trucks I have owned, I have always been right in line with the EPA estimates (+/- half a mpg or so). I am curious to find out if it will be the same with the EB.

 

All I know is I just make sure I am at the speed limit when I hit the freeway, and then I set the cruise. I stay in the right lane unless I need to pass someone and usually I get pretty darn good MPG's in whatever I drive. The extra 5-10MPH doesn't get you there much faster, and at what cost? It's all a mental thing.

 

I wish more people would realize that the left lane is for PASSING ONLY. I hate it when people hang out in the left lane. In Germany that results in a severe penalty. It should here too.

 

I agree.
*adding this to make the message long enough*