BIG change in Gas Milage MPG after 4K miles w/ 2.0L EcoBoost

[Sirk]

I would trust the numbers from the computer on the vehicle before doing it yourself. You will never know if you have it filled to the same volume as you had when you started. You could be 1/2 to 1 gal off and that would make the calculations different.

I've tested my truck's MPG computer against manual calculations on my AWD EB a dozen times. The trip computer is always incorrect, consistently erring on the side of higher reported MPG (not a surprise, most of the vehicles I've owned have done the same thing). This is based on 12 fill-ups I've done to date. The truck is generally off by about 2 MPG but can be off my more depending on circumstances. To help reduce variables, I've run my manual calculation using the same pump at the same gas station. Presumably, this would eliminate the volume discrepancy generated by using different pumps.

The truck's computer, in my experience, seems to be most "optimistic" when I'm on a road trip initially after a fill-up. Within the first hundred or so miles, it will give wildly inaccurate readings - like 38 MPG. Interestingly, after I make one stop, say a quick pull off at a rest area, the reported MPG will come back in line with a number closer to reality. All-city driving seems to result in more accurate computer MPG data.

I'm not saying this experience is universal. I am saying I never trust my vehicle to give me accurate MPG data. And my experience with checking it against manual calculations, proves my point.

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[Oxyginman]

Same exact thing has happened to me. I'm at about 1000 miles with my Ecoboost AWD. First 600 miles-ish, I was shocked and disappointed at the 20 mpg I was getting at 60-70mph with all highway driving. At about 600 miles I feel like the computer and car "caught up" with itself and began showing me 32-38 mpg depending on speed.

Doing the math with my actual expenditure/full tank to empty/miles vs speed traveled, 32-38 mpg is pretty accurate. All while utilizing the same gas station and 87 fuel. Uber surprised and happy. Love this truck so far. I would've already experimented with 91/93 fuel if i were wealthy. I'm not wealthy. So screw that. Shocker.

 

[ychuck46]

Congratulations on getting that kind of mileage with the EcoBoost engine. The highway is where it will excel as long as one is not pushing it hard. We just had our second fillup with our Maverick hybrid. Still averaging just about 48 mpg in mixed driving, although more town and country at 45-50 mph and the city. Those are the areas that the hybrid will excel in, although we still do well at highway speeds, too.

 

[thedoy1es]

So I bought my Maverick expecting gas milage near the window sticker. I was quickly disappointed as I was not getting near posted highway milage. I’m known for being able to get good gas milage with my vehicles either through utilizing cruise control or not. It’s kinda a challenge for me. I often take long highway trips.

It was only after reaching 4K miles did I notice a change in my milage on the highway! I’m surprising and happy to show you the onboard estimator and I have to say if it’s off it’s pretty damn close! Still in disbelief. This trip was from the mountains of WV to Florida and not stopping for gas or anything till SC & GA state line, exit 1 off I95 in SC. as you can see in the pics I averaged between 37 and 38 mpg in my XL trim with the 2.0 ecoboost AWD! IF I’m not mistaken this is what the hybrid is posted as getting.

Since this trip I have not been on another long highway trip but I consistently get 31 mpg and on up on shorter trips.

We noticed the same thing. We have the AWD and it was just this last trip that we reached 29mpg. Through the mountains of Montana. We had been getting 24, so we were happy. Figured it was the break in period, neither of us has had a brand new rig.

 

[Motorjunkie]

I'm impressed alone with the 31 MPG number for a 2.0.

Were you driving downhill the entire time with you got the 38-39 numbers?

CMOS

Everyone knows that south is downhill!

 

[MrHomeGuy]

Im no where near that, My XLT AWD FX4 at 6,000 miles only made it to 22.9 MPG. My Lariat AWD FX4 4k Tow at 2,000 miles is at 25 MPG. One van only hope and dream for anything over 30 MPG

 

[tomahawk72]

I'm noticing an increase in my MPG as well probably due to the switch to Summer gas. Averaged 28mpg on a three hour, 108 mile drive today averaging around 55mph.

This weekend I did a "26" mile MPG test on the highway while visiting my grandparents.

Heading to destination ALL Windows down, Sunroof open, back window open cruising at about 80mph: 22MPG

Heading home: ALL Windows up, Sunroof up, Back Window shut 27mpg cruising at 80.

It was 82F sunny and barely any wind

TLDR: She ain't too aerodynamic with the windows down lol

 

[nathan.wright]

So I bought my Maverick expecting gas milage near the window sticker. I was quickly disappointed as I was not getting near posted highway milage. I’m known for being able to get good gas milage with my vehicles either through utilizing cruise control or not. It’s kinda a challenge for me. I often take long highway trips.

It was only after reaching 4K miles did I notice a change in my milage on the highway! I’m surprising and happy to show you the onboard estimator and I have to say if it’s off it’s pretty damn close! Still in disbelief. This trip was from the mountains of WV to Florida and not stopping for gas or anything till SC & GA state line, exit 1 off I95 in SC. as you can see in the pics I averaged between 37 and 38 mpg in my XL trim with the 2.0 ecoboost AWD! IF I’m not mistaken this is what the hybrid is posted as getting.

Since this trip I have not been on another long highway trip but I consistently get 31 mpg and on up on shorter trips.

I just drove ~1400 miles this weekend in total and averaged around 28 MPG. However, I was consistently going 85-90 for most of the highway driving, so I am happy!

 

[dedMann]

I am baffled at how some are getting the milage they are from the 2.0. I drive ours like a saint(just hit 1000 miles). After three 1.5 hour long highway trips I have it up to almost 22 for its life and 24.x on this particular tank. We received ours with an insane amount of idle time. I am curious to know if I should "factory re-set it?" lol!

 

[respi133]

I am baffled at how some are getting the milage they are from the 2.0. I drive ours like a saint(just hit 1000 miles). After three 1.5 hour long highway trips I have it up to almost 22 for its life and 24.x on this particular tank. We received ours with an insane amount of idle time. I am curious to know if I should "factory re-set it?" lol!

I'm in your same boat, even tried leaving ECO, ASS on to keep mileage up and I'm barely eeking out 22.9 over 3500 miles

 

[uh50]

My all time 2.0 XL computer mileage is 24.8 (2300 miles), and the current tank is at 25.2 after a 160 mile highway round trip last Tuesday. I calculate every tank and generally my results are 1.0 to 1.25 mpg lower than the computer records. So all time, it looks as if my true mpg is around 23.5. Not great, but better than most of our recent cars or trucks.

 

[Charlie Daubitz]

I drove over 1000 miles at 58 to 65 to Florida. I got a best adv. of 34.5 MPG AWD with tow package, in eco mode.

 

[MaverRick]

Still on my first tank of gas but so far I am averaging about 24 mpg with mostly city driving including a massive Tampa traffic jam! Well below the 44 mpg we were getting with our Cmax hybrid but well above the 12 mpg I was getting with my Ram! Lol

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