justjimmy

Agreed. Here's MY mpg eaters:

5.0 L
305-55-20 Terra Grapplers (heavy)
4" BDS lift
Steel body (2014)
Crew cab WITH 6 1/2' bed
4WD.

All these factors contribute to crappy mpg.

Only good thing is I live in "flat" South Florida.

Again, just plain jealous of the great mpgs you guys are getting on your 2.7s.

SwedishSTile

My lifetime average over 11,000 miles is 15mpg calculated (16 indicated on the computer).

SCREW 4x4 20" wheels, 5.5 bed, 3.55 gears, crappy California gas, stop and go traffic and high freeway speeds (75+). 5,134lbs with a full 36 gallon tank.

The best trip I have ever managed was 20mpg, all highway 70-80mph.

Over the years and many vehicles I have figured that California craptane is about a 2mpg hit. The 4x4 is probably at least 1mpg if not more and anything abvoe 70 definitely starts to hurt your efficiency. You just cant do 60mph on the freeway here. Even the semis will be riding your *** at that speed.

I definitely thought the 2.7 would do better. I had a tundra with the 4.6 and it easily averaged 17mpg its entire life in the same conditions. I think the 2.7 is a fine highway cruiser, but it is too high strung and the turbos are always on the boil in city traffic.

I would not trade the 2.7 for any other mill though. Its a fun engine and it screams along while towing. Makes the 4.6 in the tundra seem like a slug.

tsigwing

care to elaborate?

iFord

Well, I'm okay then, when I get a new truck. I've been used to 18.2 mpg in my '02 5.4, 3:55 differential, 2WD all highway, so all these 20+ mpg highway will work for me! My last trip to Florida towing our 25' 4,500 pound trailer, got 10.2 mpg. Not bad for the old 5.4, but I'll be happy to finally get into the 21st century with a truck!

Blueraptor

Just curious if this is normal operation or if I should get my truck looked at. When in Sport mode and with Advancetrack sport mode on is it normal to break the tires loose when shifting from 1-2 or 2-3 under heavy acceleration? I never noticed it do this before in regular mode and without advancetrac Sport on It's a 2.7L 4x4 with 3.55 rear end.

SwedishSTile

Sure. The 2.7 has pretty small turbos. It has very little turbo lag as a result. Unfortunately the consequence of this is that the engine is almost always in boost so if you are in stop and go traffic it really gets pretty poor mileage.

I drive light to light to light all day long. Accelerate, brake stop repeat. At a constant speed this engine is a gem. But while accelerating, climbing, etc, its worse than a V8 in terms of economy.

Think about it this way: For ever 14 psi of boost an engine makes, it effectively doubles the displacement. So this engine making 14 psi is effectively a 5.4L. At 21psi it is effectively a 6.7L. You get the picture. That rich flat fat torque curve comes at a price.

Nighthawk87

I'm getting 22-24 averaging 75mph. I'm getting 10.5 towing 7000 pounds. Love my truck.

Screw 2wd w/3.73. Weight is about 4950#

Maverick_aces

So this is my take on the 2.7 EB. I read all the forums before I purchased and decided to go with the 2016 Super, 2.7, 3.55. My first impressions were pretty positive. It takes some getting use to when the engine stops at lights and what not, but I like to think I'm not burning fuel. I have an OCD-thing when it comes to watching my fuel economy gages (I drive like an old man basically).
The engine is really peppy. At 70MPH, it will still sling-shot out to pass cars. It's pretty great on gas too. My second tank was 1100KM (684m) on a tank (34g) or 20MPG. Certainly I can't complain about that. But I do have complaints once under load.
I picked up a steel horse trailer in Kentucky and brought it back to Canada. The fuel economy dropped by 50%. Yes I know the turbo's were on, the weight being only 50% of what the truck is rated for, and it was all highway mileage at 60-65MPH. Still, 10.65 and 11.01 for my second refill when pulling the empty trailer. This does not impress me as I clearly said to the sales people that I pull a trailer daily.
Now... I must add the truck has the power to pull it without much lag. I could maintain 65 at a 7% grade in 4th gear (3100RPM) without a problem. It would easily hand a 3% grade in 5th at 2600RPM without slowing.
Thus, here is my take for those reading this trying to figure out which engine to choose. If you need a daily commuter truck and like it for what it is, love it to bits for the savings on fuel is definitely worth the credit given to the 2.7EB. The small utility trailer or light single axle trailer will not likely impact the fuel economy very much (I will get back to the forum once I have pulled my smaller trailers a bit). But here is the "option factor consideration" that you have to look at in my opinion when looking at the engine.
If you need to add the trailer tow package and in particular the trailer brake controller, then seriously ask yourself this question... "How often will you need the extra options"? If you upgrade for safety reasons and you're pulling a trailer once a month on average that needs it, go with the 2.7 as the saving will be worth it. But if you plan to regularly pull a travel-trailer for a couple weekends per month (especially if travelling any distance), or a heavier trailer that requires the brake controller then consider a different engine.
I will see what the small trailers do to my fuel, but I didn't upgrade the truck for the smaller trailers. For this reason, I am not as happy as I thought I would be with the 2.7EB. If I find that it remains poor with the smaller trailers, there will be a very nice custom F150 available soon. You can track my notes and fuel on fuelly.com and the truck name is Übertüb.com. I think you can follow people on there and if requested I will add you so you get notifications on fill ups. I normally add notes of use and trailers too. There are a couple other complaints I dislike about the truck itself too, but have nothing to so with this thread. Thank you for reading and please email me if you have any questions. Cheers

zx12-iowa

Maverick. All the f150s get about the same towing. 8-12 mpg even with a mid sized trailer. Towing an 8k on trailer I was around 10 mpg avg at 70 in top gear.

gregsfc

I don't do a lot of city driving, but when I do, this is where I'm most impressed with the mpg of this truck; just opposite of what others have stated. It is in mixed and/or city driving where it seems like I can beat the mpg estimate, but on the highway, if I count both directions in any highway trip so far (not just one direction that may have an elevation drop or tail wind in the route), I've yet to get beyond 25.5. I do live in the Highland Rim section of TN., so it's not particularly flat where I live in most places. And that is driving conservative, at or about 65 in a 70 zone and 61 in a 65 zone. I do use cruise control, mainly because it works so well. I'm impressed at how it'll downshift on the hills and operate so smoothly with this torquey little engine. None of that racing and downshifting crap up hills like many weasley, gas-powered vehicles do.

I track my mpg only from tank to tank, so it's hard for me to make a definitive statement about highway only or city only fuel economy, but it seems like when I've been using the truck mostly for commutes (which is 85% highway below 65 mph), and the wife or I take it out for some errand running during lunch or on weekends and such, it does not tend to bring down the average very much on the computer; maybe only one or two tenths, and then, after that one or two tenth drop, it tends to hold steady way up in the middle twenties, which translates to around 22 in hand-calculating mpg.

Moreover, I have filled the tank up and went right to some city driving and have been impressed that, accounting for an approximate 1.5 mpg overestimation of the trip computer, that I've been able to get over 19; more like 19.5-20, and to me, considering my experiences with other full-size trucks, this is where this truck and this power train shines the most, although the highway real-world FE is pretty good also compared to those previous F150s that all had less power and torque and far less power-to-weight than this 2015.

I had three previous F150s and commuting 30 miles round trip, plus a few errands here and there would net me around 15 mpg in one of them, 16 in another, and 17.5 in the other; a 4.6 V8 Scab, a 4.2 V6 Scab and a 4.9 I6 Rcab, respectively. They were all 2wd; none had particularly low geared rear axle ratios. I could take those trucks and get around 20, 21, and 19, respectively on highway trips, but in mixed driving, they sucked; literally. The older, 1989 4.9 I6 had the most variability from cold weather to warm weather, and it could not reach 20 except for one time on the highway, but it was a straight shift; had only 150 horses, and from tank-to-tank commuting, it did the best of the three. In warm weather, I'd average 18.25, but when I calculated the year-around average, it brought it down to about 17.5. The limited horses of that older truck did not bother me a bit; it did everything I needed it to do and seemed strong; although I did drive an automatic version of this engine one time on the highway and that thing could not stay in the higher gears hardly at all; extremely annoying and behaved like it had only 150 hp; totally different character as mine with the manual transmission, which could take hills up to 7% grade in 5th gear no problem and always seemed strong, even carrying loads.