Right now I'm in the mid 15's, and I'm quite happy with that. Towing I range from 8-9.5 depending on speed and road elevation.

 

just went out to Newport beach and back 781 miles @ 19.8 mpg, was expecting to be in the 20s .... no worries on the gas mpg but would say the road noise was more than expected, actually pulled in the mirrors at one point and it did help

 

2013 F-150 FX4 5.0 V8 SC, 145" WB 3.73 rear, dash display says 16.4 by a calculator on fill up its 15.2 MPG.
The new Chevy and Ram V8's with engine deactivation are seeing 20 MPG.
I wish Ford would have kept the 5.4 and converted it to engine deactivation instead of going with the Eco-Boost
The 2013-14 Eco-Boost innercoolers were modified at less volume making the HP and torque ratings lower than the 2011-12 Eco-Boost's

 

I'd be willing to bet that if you drove one of the Ram or GM twins the same routes and style you drive your 5.0, you would not get 20mpg.

I've seen up to 23 mpg on my Ecoboost, but also as low as 13. (Unloaded)

Driving style, weather, distance, speed and terrain can make a huge difference.

 

i just made my big trip for the year..

Denver to Whistler, BC, back through Washington and Oregon..

5 bikes, camping gear, 3-6 people, 2 days of shuttling up and down dirt roads..

almost 3600 miles total and averaged 19.2 mpg. Most of the highway speed were 70-80 mpg..

pretty happy with the outcome.. my buddy who was along for the trip is planning on buying a new truck soon after his experience..

 

Co-worker owns a 2014 Ram 4x4, 5.7 Hemi, and myself drive from the same town 40 miles to the same work place. We go the same route, same mountains, same speed limit.
His MPG numbers are from his dash display, I say he's getting at least 1 MPG less, but still getting better mileage than my 5.0 and the eco-boost.
We use our trucks in the gas drilling field where we need 4x4 off road capability and some heavy towing, we get a $750/month truck allowance.

 

The Dodge is getting those MPG's thanks to it's 8 speed transmission.

 

Had a friend with Dodge hemi,but he said it had no guts.

 

I have driven the new dodge and I was very impressed with that 8 speed transmission, and I've never felt the hemi felt underpowered.
Still don't like the interior of the dodge, but that's a personal thing.

 

I'm just hitting 8000 on my 13' Scab 5.0 and it looks like 16 tops around town and 20/21 on the highway running 65 to 70. Above that things go down fast. I am running a 3.31 rear and I wasn't real happy with the tall gears at first but now I'm starting to like it. The truck was sitting on the dealer lot with everything I wanted except for the rear ratio but I figured I could always change it later. Now... Maybe not.

 

My brother drives a lot of these trucks at his work, and they have them with both engines and lots of diffrent gears. He's adamant that p-metric tires give you about 2 MPG better when compared to the LT C range tires that I have on my truck. Does anyone have any hard data to back this up?
I have no reason to disbelive him, since these are all driven on similar routes in similar conditions.

I guess LT tires are heavier, and rotating mass is an important factor in mileage.

What does everyone think about that?

 

^^^^^^ seems logical to me.....but I still look forward to rolling with some custom wheels and 33" Toyo mts

 

witch is four normal gears and four overdrive gears so its shifting a lot. but I am sure dodge has thought about the life span on the transmissions

 

Trip meter B, reset 41203 miles ago. 6.5' bed 2012 Super Crew Lariat with the 5.0 and a 3.55 limited slip.

 

^^^^^^that's awesome for a full size truck.....can`t wait to get mine back from collision repair shop pretty sure my v8 F150 gets better mpg than this rental v6 Challenger I`m driving now