RobE
Well-Known Member
Just drove 500mi round trip with my 2011 Expedition King Ranch. Back country roads from South Alabama to North Alabama and back. Used Regular 87 and averaged 21 mpg. Not bad for a 5.4L engine with 195k miles on it.
2011 Expedition King Ranch 195k 21 mpg avg
- Thread starter RobE
- Start date
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GlennSullivan
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Is it a 2WD or 4WD truck? My 2011 4WD has never done better than a 17.5 / 18.0 highway average and I needed to stay at 70 or below to get that.
RobE
Well-Known Member
GlennSullivan
Full Access Members
That makes me feel better. I do remember a friend of mine in FL with a 2014 2WD 5.4 getting over 20 average, so good for you!
My '011 averages ~15-16 with mostly highway miles, all in 2WD @~60-65mph & Sunoco/Exxon 91 gas. I have 4WD available but have only used it 2-3 times in 5 years during massive snow storms 
However, I recently replaced the standard air filter with an aftermarket, hi-performance oiled one & replaced the MAF with a new OEM unit, in addition to being well maintained on all the other normal stuff.
Prior to the above, it was down in the 10-12 range
However, I recently replaced the standard air filter with an aftermarket, hi-performance oiled one & replaced the MAF with a new OEM unit, in addition to being well maintained on all the other normal stuff.
Prior to the above, it was down in the 10-12 range
RobE
Well-Known Member
Wow, even on E-85 and being heavy on the throttle around town I usually get 13 mpg. Around town I usually fill up with non-ethanol fuel and keep my tank 1/4-1/2 full as I can go a week without driving it. I use the regular fuel with 10% ethanol when traveling long distances as I am just burning through a full tank. I will get E-85 when I come across it and I have less than 1/4 tank. It does give a better throttle response at the cost of mpg.
Not to spoil the party, but are you talking actual MPG that you calculated based on mileage when you fill up or are you talking about the MPG readout in the Expy? My '11 Expy MPG readout has been 1.2 MPG high since new compared to calculating it manually when I fill up. The higher the MPG readout, the greater the error. My 2000 Expy had a 0.6 MPG error on the high side and my 2023 F-150 has a 1.6 MPG error. This is compared to my wife's Toyota that has near zero error. A 21 MPG readout on my '11 would probably be an actual of about 19.5 (which would be hard to achieve with 4WD). I also find that wind has a huge impact on MPG with an Expy. That tailgate is a huge sail. A good tailwind can bump my MPG by 1.5 to 2 MPG.
RobE
Well-Known Member
Even with your suggested "error" with 195k miles, that is still a respectable mpg. Not sure how much wind played into the calculation as I went north then 4 hours later went south for a total of 512 miles. I probably could have made it there and back without a fuel stop, but didn't want to risk running out of fuel with my spouse in the vehicle. I also idled it for a bit at the location.
914rrr
Well-Known Member
Nice to see 300k on a 3rd Gen!
914rrr
Well-Known Member
I've noticed I can pick up at least 3-4 MPG hwy if I have some cars or trucks I can "draft" vs driving solo. I'm not tailgating, just benefitting from the reduced aero drag with another couple cars or more in front of me.
Folks, glad I came across this today. I have an 11 XLT 119" basic model 301A. When this was new the 1st oil change I got about 16 going 70 on fairly flat i93 (I live in NH).
Well since then and now with 193k, this SUV amazingly still reports 23.5MPG on my ride to work. That's about 1.5MPG high as I did the fill, wait 30 s, top off and fill again about once/yr and it's still the same. So it gets basically 22MPG.
When I tow our Bullet31BHPR, it gets about 11-12 and that's expected. Sure the 910# dry hitch weight is right at the max but this SUV has been SUPER RELIABLE.
5.4L 3V no good. Well that bearded wizard guy can shove it. Engine wise, I've only done 1 starter, changed to Accel coils and spark plugs are on the 5th round now. I've changed oil with Mot Synth blend 5-20W at 5k until 100k. FTM noted 5-30 so I changed to that and after 150k, oils changed at 3.3k. Now closing in on 200k and oils every 2500 with filter at 5k and ONLY FL820S EVER!!!
Well since then and now with 193k, this SUV amazingly still reports 23.5MPG on my ride to work. That's about 1.5MPG high as I did the fill, wait 30 s, top off and fill again about once/yr and it's still the same. So it gets basically 22MPG.
When I tow our Bullet31BHPR, it gets about 11-12 and that's expected. Sure the 910# dry hitch weight is right at the max but this SUV has been SUPER RELIABLE.
5.4L 3V no good. Well that bearded wizard guy can shove it. Engine wise, I've only done 1 starter, changed to Accel coils and spark plugs are on the 5th round now. I've changed oil with Mot Synth blend 5-20W at 5k until 100k. FTM noted 5-30 so I changed to that and after 150k, oils changed at 3.3k. Now closing in on 200k and oils every 2500 with filter at 5k and ONLY FL820S EVER!!!
ManUpOrShutUp
Full Access Members
Same here except for the speed.
On a recent 3k mile round trip, my average was 16.5 on the way there with a drop to a 15.9 average for the entire trip. The return trip was with a trailer though (total load about 2k). At 227k miles I was happy with that.Frank Wilson
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12-15 mpg on a Triton V8 especially struck with an 8' .
