Just courious, speed? Hilly? Flat? Hauling weight? Crew cab? Thats good mileage.

 

That's imperial mpg isn't it?
I switched mine over once and I was pretty sure it was. Still, that would be 18.6 mpg us.

 

Crew cab FX4 ecoboost with 3.73 rear end, with Michelin LTX tires and SCT 87 tune.

Nope, it's all US units.

 

Keep it below 100 km/h and look what happens . This was driving around Calgary for the day running errands - in & out of traffic.

For my truck, ~ 80-90km/h is the gold (about 45 mph for the yanks ! ). As long as I stay between 65 km/hr & 100 km/h this truck just sips fuel compared to my last SUV.

 

11 f150 screw 4x4 with 3.55, 5.0 engine, tonneau cover. Trip from Pa to Port Clinton Ohio, 3 passengers and fishing gear, 400 miles each way. On way out, running 70 -75 was 19.6, on the way back, running 68-78 was 19.2. I drive pretty conservatively and stay with the traffic, no abrupt passing or swift accelleration. I was a little heavier on tha way back as we had three coolers filled with fish and ice. Lots of mountains both ways. Not too bad considering all things.

 

When I test my mileage, I always base it on a round trip. Changes in elevation on a one-way trip make a big difference, sometimes as much as 2mpg, even in Michigan.

Are others measuring by the round trip?

Recent mileage test with 80+ mile round trips. Average around 74 mph:

20.5 mpg highway E-10
16.5 mpg highway E-85

2011 Supercrew, 2wd, 3.73 rear w/trailer package. 5.0.

 

I'm getting close to 20 as my average. Depends on city or hwy though.

 

I'd take the 23 mpg like some of you guys are getting!

 

I might get 12.2 on a good day.
Silly egoboost.

 

Got nearly 17 out of it in a trip to Jacksonville the other day. Mine's got the 351W.