Low MPGs on 2.7
03-05-2018, 12:35 PM
#1
Member
Thread Starter
Low MPGs on 2.7
Hey everyone,
Want to see if there are any cheapish upgrades to help with my MPGs at all? I bought a 2017 2.7 mainly because it claimed to have stellar gas mileage, but currently getting less than 16 MPG on my last two tanks of fuel. I don't hot rod very often and generally when I'm on the freeway I use cruise control. It has almost been a mission of mine to see how high I can get the MPGs but so far I have not done very well. I would say my biggest obstacle is that I live in Morgantown, WV and there are nothing but hills everywhere when driving around. Anyone else having less than stellar fuel economy in their 2.7s?
Want to see if there are any cheapish upgrades to help with my MPGs at all? I bought a 2017 2.7 mainly because it claimed to have stellar gas mileage, but currently getting less than 16 MPG on my last two tanks of fuel. I don't hot rod very often and generally when I'm on the freeway I use cruise control. It has almost been a mission of mine to see how high I can get the MPGs but so far I have not done very well. I would say my biggest obstacle is that I live in Morgantown, WV and there are nothing but hills everywhere when driving around. Anyone else having less than stellar fuel economy in their 2.7s?
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DrockinWV (03-05-2018)
03-05-2018, 12:55 PM
#4
Member
Thread Starter
I drive pretty conservatively, nothing done to the truck other than a tonneau cover, now just over 3,000 miles. Just kind of frustrating, probably could have went with the 3.5 and gotten roughly the same.
03-05-2018, 01:00 PM
#5
Fuelly.com is a good place to see an average across lots of a particular vehicle. There are several threads here but most aren’t for a full tank and several are just the Ford estimate which is always off. I suspect it is off even more for short drives versus the entire tank.
Use browse function on bottom of fuelly click on f150, from there select 2018 and that will show you the average for that year. You can change motor then apply filter and see just that one specific motor. Doing that shows them very close to same mileage. The best I can see the 2.7 2016 looks to be +2, 3.5/5.0 within 1 MPG spread. I have the eco 3.5 in an Expedition and it isn’t doing better than my 5.0 truck. The best thing about fuelly is it is real data for people using truck and I trust their numbers to be closer to real world.
Use browse function on bottom of fuelly click on f150, from there select 2018 and that will show you the average for that year. You can change motor then apply filter and see just that one specific motor. Doing that shows them very close to same mileage. The best I can see the 2.7 2016 looks to be +2, 3.5/5.0 within 1 MPG spread. I have the eco 3.5 in an Expedition and it isn’t doing better than my 5.0 truck. The best thing about fuelly is it is real data for people using truck and I trust their numbers to be closer to real world.
03-05-2018, 02:08 PM
#7
If it's still fairly new, just keep driving easy. Mileage on the 2.7 jumps up considerably after the "break-in" period. I also run tire pressure a bit on the higher side. My 20" wheels call for 35 PSI but I usually keep it around 37-38 cold.
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Liv'nbytheBungie74 (03-12-2018)
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03-05-2018, 02:12 PM
#8
Fuelly has the 2.7 getting ~2.2mpg better than the 3.5 ecoboost. I wouldn't put a lot of weight in the 2018 numbers because so much fewer miles were logged. I would say the best bet would be to find a reasonably flat stretch of road somewhere that's a few miles long and allows you to stay in overdrive, minimal wind, set cruise at 65, see what computer gives you. If you have checked the lie o meter against actual then subtract that amount, if not subtract ~1mpg is probably close. If road changes elevation significantly (use GPS on your phone to see how much elevation changes) then drive say 10 miles, make a eco friendly U turn (minimal braking) and drive 10 miles back. This will cancel elevation affects and mostly cancel wind effect. This 65 mph gas consumption should be very close to window sticker number assuming no major factory/aftermarket upgrades that affect mpg. I think the "typical" truck used for epa testing is probably a CC, 5.5' bed, XLT 301A setup. I had a Platinum that ~600# more than this "typical" truck so sure enough I got ~1.5 mpg less than the window sticker. I also have had a regular cab that was probably ~400# lighter than this "typical" truck and sure enough I got 0.5-1 mpg better than sticker.
03-05-2018, 02:20 PM
#9
03-05-2018, 04:06 PM
#10
Member
Thread Starter
I appreciate all the tips and information. I do think it is mainly bad because of the area I live in. However this weekend I will be taking a 2.5 hour road trip, and hopefully that will give me a more accurate reading once I get to some flat land and out of the hills. Also Fuelly seems pretty legit, and would like to test it out to see any fluctuation from now and until I get some more miles on the truck.