No experience on the F150 as my 2016 doesn't have it, but I played with it a lot on my 11 Sonata, and as has been said if you want it to work, you need to change your driving style.

I also got worse mileage due to pressing the throttle down more to get the car up and moving at anything that felt like an acceptable speed. Didn't seem to affect anything during cruising speeds more stop/go driving.

 

I don't expect the same performance as Normal mode, in fact I kinda like that it slows me down a bit on accelerations. But I still get worse mileage in EcoDrive.

 

When I used the Eco mode my pickup kept throwing a CEL.

 

One thing I recently noticed with my truck is that accelerating TOO slowly hurts my mpg. But I also noticed that my mpg improved with a 550lb snowmobile in the bed.

 

 

In my 2018 I get better mileage when using Eco mode and even more better using wet/snow.... a 2mpg decline when using Normal mode.

To be frugal, it's all about driving habits, especially with a turbo engine, learning to drive with minimal boost possible is key, the 10speed algorithm helps too.... if you drive in Eco and are into boost more than half the time, you will not see any fuel consumption difference between Eco and Normal

I have an external Boost gauge that helps me monitor the levels. At anytime when I see slight boost, I adjust my foot accordingly and sometimes manually change gears to avoid lugging

 

I put it Sport from time to time for ****s and giggles. Its fun. I leave it in normal most of the time though. I have noticed I get better MPGs per the lie-o-meter when I put premium in it.

 

I definitely get better MPGs with a light foot in Normal mode than trying to drive in Eco mode around town.

And yes, 93 Octane gets me at least 2 MPG more per gallon (never more than 3 MPG), but that extra MPG does not make up for the 60 to 90 cent premium that I pay at the pump, so I stick with 87 octane.

 

Isn't premium recommended on all engine configurations now per the manual?

 

I had two 2.7 liter SCAB trucks and loved the MPG. Now in a 3.5 liter SCREW but we are still in the break-in period (less than 5000 miles). I used the ECO mode a fair amount in the 2015 ( 6 spd) and really can not say the fuel economy was better. Thanks for starting the thread. Will be interested in seeing future posts.