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Same as I experienced with my 2013 3.5 truck, my '22 does its best fuel economy on back road driving. Anything above 65 is when it starts ticking down. I have put just about 1200 miles on my now 7200 mile 2.7 truck, only using 87 octane. My normal commute is just about half back roads (30-50mph) and half highway, where I tend to cruise between 70-75. With my normal driving habits, I usually see 22mpg. I fueled up yesterday and have driven 85% backroads in the 70 miles I have put on it. This time for the highway driving, I set the cruise at 65mph. As i pulled into work this morning, I saw 25.9mpg average over those 70 miles, which is the best ive seen so far. Its possible to get good fuel economy, but it depends on many factors; back roads vs highways, speeds traveled, your driving habits (how heavy your foot is), elevation changes, etc.
wind speed/direction is also a factor as well
as temperature and location. Location = sea level or rural interstate v urban highway.
Now at somewhere around 120 miles to this tank of fuel, my average has gone down to just over 24mpg over my normal commute with some 70mph cruising. If you watch your pedal input, it really helps.
This MPG is stellar. Normal driving yielded about 8mpg LESS on my 2013 3.5 truck.
My 2019 2.7 could hit 25 mpg on flat highway around 65 mph on 93 octane. It was a bit less on 87, and the cost for 93 didn't really equal out financially but the performance was somewhat noticeable.
My current 3.3 will hit 25 mph on the same flat highway at 65-70 on 87 octane. I have never put 93 octane in it so I cant speak to any difference it would make.
In comparison, the 2.7 has the potential to be the most fuel efficient engine in light load situations due to its obvious small displacement. Under loaded scenarios my 3.3 beats it out in fuel efficiency but obviously the performance is quite different.
If my current truck had the 2.7, I would place a solid bet the fuel mileage on flat highway at 65 mph would exceed 25 mpg as my regular cab only weighs 4200 lbs.
Like everyone said, keep it out of the boost for the best mileage.
My 2020 2.7 XL Supercab with a Leer 180 midrise (above cab) shell is staying at 20.8. Mostly highway 65mph towing an 8 x 10 utility trailer half the time. 87 octane. Truck has almost 20k.
At what point does a 2.7 start getting decent fuel mileage? I currently have 3k miles on the truck and just finished a 1,500 mile vacation trip and the best it did was 22 mpg on the readout ( hand calculation was 19.9) and that was with a light tail wind.
19.9 isn't bad. My 2020 2.7 gets about 18.0 on hard, slow city miles. About 22.0 on the highway. With only the driver in the truck, not towing, nothing in the bed. How on Earth others get 24-25 MPG is beyond me.
18 in hard slow city miles is actually pretty good. Worst mileage I could ever get out of my 2.7 was 16 calculated purely on a 40 mile highway stretch almost all uphill and with a constant head wind going 75 mph. Into the boost non stop.
Worst towing was 14.
The numbers you guys are reporting are pretty darn similar to what I’m seeing out of my V8. Lifetime 19.9, Best ever 25.8, worst 11.9. I would be over 29 lifetime but for towing mines.
similar isn’t too surprising giving how similar the Power and Torque of the two engines is.
I can see any F150 getting 25 on a long flat stretch of highway. But 29, aside from the diesel I call BS all day long on that, especially if you are going off the lie-o-meter.
I can only use my own truck as an example. It's a tuned 2.7 RCSB, prefers 93 octane 10% ethanol and can get 29 MPG. I does not like to be babied or lugging the RPM's below 2000. I use sport all the time except in slippery conditions.
I have corrected the speed/odo, speed to less than .5 MPH at 60, odo to 4 miles low per 500 miles.
Start of a 6000 mile road trip SE WI, to AZ then up to MT and back to WI. That is a normal average in WI on 93 10%.
Getting into MN started using 91 or what was available. Worst for 2 tankfulls 87 and 18 MPG. Average for the trip with mountains, towns, 80 MPH freeways.
I near always use top gearing locked out 55 MPH and lower. Less than 2000 RPM will demand boost more often as well as 87 octane. My truck is 2wd 1.75 front level, 275 70-17 AT tires, 6 speed, 3.73 EL gear.KM
Last edited by 2017bluetruck; May 12, 2023 at 04:30 PM.
