Planning on ordering a XLT 302a supercab 4x2 3.55 locker 2.7 3.5 or 5.0.... can't decide.
What do you guy think I can in mpg driving rolling terrain at 70mph in 70* weather with these engines. Using a light foot no boost
Is it possible to drive this 4600lb vehicle without going into boost with the 3.5? ya ya not downhill with a tail wind

 

Unless they fixed something in the new 5.0 I’d recommend the 3.5. I had the 5.0 in my 2020 and was extremely disappointed with ping and noise in general. I have the now have a 3.5 in my 2021. I have to say this motor is way quieter and lots more power. The 5.0 just felt lazy to me and the pinging was ridiculous.

 

The absolute best mpg I have gotten on my '22 2.7 is in the pic.. basically a 100 mile round trip on the same day.. really taking easy. this represents the top.. I could not get higher mpg if I tried..

I do think gasoline.. is going to be a luxury.. or priced like one. The 2.7 is so much better than a V8 in town.. I don't there is any sense in the bigger displacement.. I traded a 5.3 (GMC) in October.. so glad I did not follow with another eight... so glad.

If you are wealthy.. this discussion does not apply, I know..



100 mile round trip.. 2.7 eco 502A

 

I have 2015 XLT, 2.7, 3.73 locker. I get about 20 mpg doing 70 on a rolling freeway (real world, not based on the lie-o-meter). I am very happy with the power and pep of the 2.7. I only tow a utility trailer; if I towed bigger frequently I would consider the 3.5. I currently have a '22 on order and am getting the 2.7 again.

 

As others have mentioned, and since you didn't provide any reason for only looking at those two engines, I would advise the 2.7L. It's as quick as the other two, has better material construction, and will get better fuel mileage in most situations. If you tow often and under 8,000lbs, I would get the 5.0L since its towing fuel mileage in that range will be better. If you tow a couple times a year and under 8,000, I would get the 2.7L.

If just driving the truck with occasional hauling or whatever, the 2.7L or the PowerBoost are the best options, but even with better fuel mileage you won't make up the cost difference between the 2.7L and PB by fuel alone. If you plan on getting the 3.5L w/ Max Tow or something, I would just get the PowerBoost since the price is essentially equivalent.

So there, made it tougher for you probably. But when coming and asking questions about engines it helps to know more about what you are using the truck for aside from rolling hill drives. Rolling hill or not, I wouldn't recommend the 2.7L for someone that tows an 8,000lb TT every weekend. It will do it, I have seen that in person, it just won't be the best experience.

 

If you're worried about MPGs, opt for the 18s with the 275/65/18s over the 20s with the 275/60/20s. You'll save about 10lbs rolling weight per wheel.

 

Virtually NO.

We can tell you what MPG you'll get but it will be as beneficial as telling you which oil is the best. The point, nobody can tell you what you can expect. We all ahve different reports, and we discuss this each week.

Is your ONLY concern "which vehicle is the most efficient"?
If you want a truck to say you have a truck, and want it to have low operating costs, get the 2.7l engine.
I can cruise up hills with cruise control enabled with speeds at 60 -70 and it almost never drops out of 6th gear (6 speed trans), the boost does the work. To prevent that I'd have to downshift gears and keep them locked out. In doing so, YOU need to find the balance of when is higher RPM more efficient than boost. In my case, 5th sometimes feels more efficient, less throttle input and less boost. Many people report here that towing with locked out gears is yielding noticeable better economy -while towing though is key for that particular comment.

 

Thanks guys for your experiences on the three engines.
We all know there are so many variables out there that its impossible to get the same results. Yes the smaller engine will win every time for the best mpg. NOT towing.
This truck will not see towing at the present time. I like the 2.7 due to the bore/stroke configuration,iron block, smaller turbos and seems to have the best track record for repairs. And if the giddyup is that of the 3.5 I'm happy with that. Just 10 years ago I drag raced a NA 571cid BBF in a 92f150 NOT streetable LOL 9.71/139

 

First and far-most give your vehicles engine the most torque available with the 3.73 gearing.

Under 70 mph rolling hills the 10 speed has more than enough overdrive gears to achieve reasonable fuel mileage with reasonable driving habits.

Have on order a 2.7EB XLT 302a with the 2.7EB payload package that includes the 3.73 gearing. Same driving conditions around here.

On fuelly.com link below just start by looking over the total fuel averages for the F150 engines.

Just change the engine type and read the numbers.

One can dig deep down this rabbit hole or go as far as needed, or just look at ALL F150's with that engine type and year and be just as satisfied.

The 2.7 has history back to it's introduction in 2015, others go back further.

https://www.fuelly.com/car/ford/f-15...=&submodel_id=

 

I still don't see how the 2.7l f150 has the same "giddy up" as a similarly equipped f150 with an engine that claims 75 more hp and 100 ft-lbs torque.